Merge #5013

5013: More principled indentation trimming in fixtures r=matklad a=matklad



bors r+
🤖

Co-authored-by: Aleksey Kladov <[email protected]>

17 files changed, 544 insertions, 561 deletions

diff --git a/crates/ra_assists/src/handlers/add_function.rs b/crates/ra_assists/src/handlers/add_function.rs
index 1cfbd75aa..19ce81d99 100644
--- a/crates/ra_assists/src/handlers/add_function.rs
+++ b/crates/ra_assists/src/handlers/add_function.rs
@@ -986,7 +986,6 @@ fn main() {
 ",
             r"
 
-
 pub(crate) fn bar() {
     ${0:todo!()}
 }",
diff --git a/crates/ra_assists/src/handlers/auto_import.rs b/crates/ra_assists/src/handlers/auto_import.rs
index 5092bf336..d1cafa7d9 100644
--- a/crates/ra_assists/src/handlers/auto_import.rs
+++ b/crates/ra_assists/src/handlers/auto_import.rs
@@ -488,16 +488,17 @@ mod tests {
         check_assist(
             auto_import,
             r"
-                    //- /lib.rs crate:crate_with_macro
-                    #[macro_export]
-                    macro_rules! foo {
-                        () => ()
-                    }
+//- /lib.rs crate:crate_with_macro
+#[macro_export]
+macro_rules! foo {
+    () => ()
+}
 
-                    //- /main.rs crate:main deps:crate_with_macro
-                    fn main() {
-                        foo<|>
-                    }",
+//- /main.rs crate:main deps:crate_with_macro
+fn main() {
+    foo<|>
+}
+",
             r"use crate_with_macro::foo;
 
 fn main() {
@@ -847,13 +848,14 @@ fn main() {
         check_assist(
             auto_import,
             r"
-                    //- /lib.rs crate:dep
-                    pub struct Struct;
+//- /lib.rs crate:dep
+pub struct Struct;
 
-                    //- /main.rs crate:main deps:dep
-                    fn main() {
-                        Struct<|>
-                    }",
+//- /main.rs crate:main deps:dep
+fn main() {
+    Struct<|>
+}
+",
             r"use dep::Struct;
 
 fn main() {
@@ -869,20 +871,22 @@ fn main() {
         check_assist(
             auto_import,
             r"
-                    //- /lib.rs crate:dep
-                    pub mod fmt {
-                        pub trait Display {}
-                    }
+//- /lib.rs crate:dep
+pub mod fmt {
+    pub trait Display {}
+}
 
-                    pub fn panic_fmt() {}
+pub fn panic_fmt() {}
 
-                    //- /main.rs crate:main deps:dep
-                    struct S;
+//- /main.rs crate:main deps:dep
+struct S;
 
-                    impl f<|>mt::Display for S {}",
+impl f<|>mt::Display for S {}
+",
             r"use dep::fmt;
 
 struct S;
+
 impl fmt::Display for S {}
 ",
         );
@@ -894,21 +898,20 @@ impl fmt::Display for S {}
         check_assist(
             auto_import,
             r"
-                    //- /lib.rs crate:dep
-
-                    macro_rules! mac {
-                        () => {
-                            pub struct Cheese;
-                        };
-                    }
-
-                    mac!();
+//- /lib.rs crate:dep
+macro_rules! mac {
+    () => {
+        pub struct Cheese;
+    };
+}
 
-                    //- /main.rs crate:main deps:dep
+mac!();
 
-                    fn main() {
-                        Cheese<|>;
-                    }",
+//- /main.rs crate:main deps:dep
+fn main() {
+    Cheese<|>;
+}
+",
             r"use dep::Cheese;
 
 fn main() {
@@ -924,16 +927,15 @@ fn main() {
         check_assist(
             auto_import,
             r"
-                    //- /lib.rs crate:dep
-
-                    pub struct FMT;
-                    pub struct fmt;
-
-                    //- /main.rs crate:main deps:dep
+//- /lib.rs crate:dep
+pub struct FMT;
+pub struct fmt;
 
-                    fn main() {
-                        FMT<|>;
-                    }",
+//- /main.rs crate:main deps:dep
+fn main() {
+    FMT<|>;
+}
+",
             r"use dep::FMT;
 
 fn main() {
diff --git a/crates/ra_assists/src/handlers/fix_visibility.rs b/crates/ra_assists/src/handlers/fix_visibility.rs
index 531b3560f..54601d1f3 100644
--- a/crates/ra_assists/src/handlers/fix_visibility.rs
+++ b/crates/ra_assists/src/handlers/fix_visibility.rs
@@ -255,15 +255,14 @@ mod tests {
         check_assist(
             fix_visibility,
             r"
-              //- /main.rs
-              mod foo;
-              fn main() { foo::Foo<|> }
+//- /main.rs
+mod foo;
+fn main() { foo::Foo<|> }
 
-              //- /foo.rs
-              struct Foo;
-              ",
+//- /foo.rs
+struct Foo;
+",
             r"$0pub(crate) struct Foo;
-
 ",
         );
     }
@@ -279,14 +278,14 @@ mod tests {
         );
         check_assist(
             fix_visibility,
-            r"//- /lib.rs
-              mod foo;
-              fn main() { foo::Foo { <|>bar: () }; }
-              //- /foo.rs
-              pub struct Foo { bar: () }
-              ",
+            r"
+//- /lib.rs
+mod foo;
+fn main() { foo::Foo { <|>bar: () }; }
+//- /foo.rs
+pub struct Foo { bar: () }
+",
             r"pub struct Foo { $0pub(crate) bar: () }
-
 ",
         );
         check_assist_not_applicable(
@@ -296,12 +295,13 @@ mod tests {
         );
         check_assist_not_applicable(
             fix_visibility,
-            r"//- /lib.rs
-              mod foo;
-              fn main() { foo::Foo { <|>bar: () }; }
-              //- /foo.rs
-              pub struct Foo { pub bar: () }
-              ",
+            r"
+//- /lib.rs
+mod foo;
+fn main() { foo::Foo { <|>bar: () }; }
+//- /foo.rs
+pub struct Foo { pub bar: () }
+",
         );
     }
 
@@ -316,14 +316,14 @@ mod tests {
         );
         check_assist(
             fix_visibility,
-            r"//- /lib.rs
-              mod foo;
-              fn main() { foo::Foo::Bar { <|>bar: () }; }
-              //- /foo.rs
-              pub enum Foo { Bar { bar: () } }
-              ",
+            r"
+//- /lib.rs
+mod foo;
+fn main() { foo::Foo::Bar { <|>bar: () }; }
+//- /foo.rs
+pub enum Foo { Bar { bar: () } }
+",
             r"pub enum Foo { Bar { $0pub(crate) bar: () } }
-
 ",
         );
         check_assist_not_applicable(
@@ -333,12 +333,13 @@ mod tests {
         );
         check_assist_not_applicable(
             fix_visibility,
-            r"//- /lib.rs
-              mod foo;
-              fn main() { foo::Foo { <|>bar: () }; }
-              //- /foo.rs
-              pub struct Foo { pub bar: () }
-              ",
+            r"
+//- /lib.rs
+mod foo;
+fn main() { foo::Foo { <|>bar: () }; }
+//- /foo.rs
+pub struct Foo { pub bar: () }
+",
         );
     }
 
@@ -355,14 +356,14 @@ mod tests {
         );
         check_assist(
             fix_visibility,
-            r"//- /lib.rs
-              mod foo;
-              fn main() { foo::Foo { <|>bar: () }; }
-              //- /foo.rs
-              pub union Foo { bar: () }
-              ",
+            r"
+//- /lib.rs
+mod foo;
+fn main() { foo::Foo { <|>bar: () }; }
+//- /foo.rs
+pub union Foo { bar: () }
+",
             r"pub union Foo { $0pub(crate) bar: () }
-
 ",
         );
         check_assist_not_applicable(
@@ -372,12 +373,13 @@ mod tests {
         );
         check_assist_not_applicable(
             fix_visibility,
-            r"//- /lib.rs
-              mod foo;
-              fn main() { foo::Foo { <|>bar: () }; }
-              //- /foo.rs
-              pub union Foo { pub bar: () }
-              ",
+            r"
+//- /lib.rs
+mod foo;
+fn main() { foo::Foo { <|>bar: () }; }
+//- /foo.rs
+pub union Foo { pub bar: () }
+",
         );
     }
 
@@ -458,19 +460,18 @@ mod tests {
         check_assist(
             fix_visibility,
             r"
-            //- /main.rs
-            mod foo;
-            fn main() { foo::bar<|>::baz(); }
+//- /main.rs
+mod foo;
+fn main() { foo::bar<|>::baz(); }
 
-            //- /foo.rs
-            mod bar {
-                pub fn baz() {}
-            }
-            ",
+//- /foo.rs
+mod bar {
+    pub fn baz() {}
+}
+",
             r"$0pub(crate) mod bar {
     pub fn baz() {}
 }
-
 ",
         );
 
@@ -486,17 +487,15 @@ mod tests {
         check_assist(
             fix_visibility,
             r"
-            //- /main.rs
-            mod foo;
-            fn main() { foo::bar<|>::baz(); }
-
-            //- /foo.rs
-            mod bar;
-
-            //- /foo/bar.rs
-            pub fn baz() {}
-            }
-            ",
+//- /main.rs
+mod foo;
+fn main() { foo::bar<|>::baz(); }
+
+//- /foo.rs
+mod bar;
+//- /foo/bar.rs
+pub fn baz() {}
+",
             r"$0pub(crate) mod bar;
 ",
         );
@@ -506,14 +505,16 @@ mod tests {
     fn fix_visibility_of_module_declaration_in_other_file() {
         check_assist(
             fix_visibility,
-            r"//- /main.rs
-              mod foo;
-              fn main() { foo::bar<|>>::baz(); }
+            r"
+//- /main.rs
+mod foo;
+fn main() { foo::bar<|>>::baz(); }
 
-              //- /foo.rs
-              mod bar {
-                  pub fn baz() {}
-              }",
+//- /foo.rs
+mod bar {
+    pub fn baz() {}
+}
+",
             r"$0pub(crate) mod bar {
     pub fn baz() {}
 }
@@ -525,10 +526,12 @@ mod tests {
     fn adds_pub_when_target_is_in_another_crate() {
         check_assist(
             fix_visibility,
-            r"//- /main.rs crate:a deps:foo
-              foo::Bar<|>
-              //- /lib.rs crate:foo
-              struct Bar;",
+            r"
+//- /main.rs crate:a deps:foo
+foo::Bar<|>
+//- /lib.rs crate:foo
+struct Bar;
+",
             r"$0pub struct Bar;
 ",
         )
diff --git a/crates/ra_db/src/fixture.rs b/crates/ra_db/src/fixture.rs
index 20f291568..3959d7efe 100644
--- a/crates/ra_db/src/fixture.rs
+++ b/crates/ra_db/src/fixture.rs
@@ -110,7 +110,7 @@ fn with_single_file(db: &mut dyn SourceDatabaseExt, ra_fixture: &str) -> FileId
     let source_root = SourceRoot::new_local(file_set);
 
     let crate_graph = if let Some(meta) = ra_fixture.lines().find(|it| it.contains("//-")) {
-        let entry = Fixture::parse_single(meta.trim());
+        let entry = Fixture::parse_meta_line(meta.trim());
         let meta = match ParsedMeta::from(&entry) {
             ParsedMeta::File(it) => it,
         };
diff --git a/crates/ra_ide/src/call_hierarchy.rs b/crates/ra_ide/src/call_hierarchy.rs
index defd8176f..1e3a31602 100644
--- a/crates/ra_ide/src/call_hierarchy.rs
+++ b/crates/ra_ide/src/call_hierarchy.rs
@@ -145,12 +145,12 @@ mod tests {
     use crate::mock_analysis::analysis_and_position;
 
     fn check_hierarchy(
-        fixture: &str,
+        ra_fixture: &str,
         expected: &str,
         expected_incoming: &[&str],
         expected_outgoing: &[&str],
     ) {
-        let (analysis, pos) = analysis_and_position(fixture);
+        let (analysis, pos) = analysis_and_position(ra_fixture);
 
         let mut navs = analysis.call_hierarchy(pos).unwrap().unwrap().info;
         assert_eq!(navs.len(), 1);
@@ -177,12 +177,12 @@ mod tests {
     fn test_call_hierarchy_on_ref() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            fn callee() {}
-            fn caller() {
-                call<|>ee();
-            }
-            "#,
+//- /lib.rs
+fn callee() {}
+fn caller() {
+    call<|>ee();
+}
+"#,
             "callee FN_DEF FileId(1) 0..14 3..9",
             &["caller FN_DEF FileId(1) 15..44 18..24 : [33..39]"],
             &[],
@@ -193,12 +193,12 @@ mod tests {
     fn test_call_hierarchy_on_def() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            fn call<|>ee() {}
-            fn caller() {
-                callee();
-            }
-            "#,
+//- /lib.rs
+fn call<|>ee() {}
+fn caller() {
+    callee();
+}
+"#,
             "callee FN_DEF FileId(1) 0..14 3..9",
             &["caller FN_DEF FileId(1) 15..44 18..24 : [33..39]"],
             &[],
@@ -209,13 +209,13 @@ mod tests {
     fn test_call_hierarchy_in_same_fn() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            fn callee() {}
-            fn caller() {
-                call<|>ee();
-                callee();
-            }
-            "#,
+//- /lib.rs
+fn callee() {}
+fn caller() {
+    call<|>ee();
+    callee();
+}
+"#,
             "callee FN_DEF FileId(1) 0..14 3..9",
             &["caller FN_DEF FileId(1) 15..58 18..24 : [33..39, 47..53]"],
             &[],
@@ -226,20 +226,20 @@ mod tests {
     fn test_call_hierarchy_in_different_fn() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            fn callee() {}
-            fn caller1() {
-                call<|>ee();
-            }
+//- /lib.rs
+fn callee() {}
+fn caller1() {
+    call<|>ee();
+}
 
-            fn caller2() {
-                callee();
-            }
-            "#,
+fn caller2() {
+    callee();
+}
+"#,
             "callee FN_DEF FileId(1) 0..14 3..9",
             &[
                 "caller1 FN_DEF FileId(1) 15..45 18..25 : [34..40]",
-                "caller2 FN_DEF FileId(1) 46..76 49..56 : [65..71]",
+                "caller2 FN_DEF FileId(1) 47..77 50..57 : [66..72]",
             ],
             &[],
         );
@@ -249,26 +249,26 @@ mod tests {
     fn test_call_hierarchy_in_tests_mod() {
         check_hierarchy(
             r#"
-            //- /lib.rs cfg:test
-            fn callee() {}
-            fn caller1() {
-                call<|>ee();
-            }
+//- /lib.rs cfg:test
+fn callee() {}
+fn caller1() {
+    call<|>ee();
+}
 
-            #[cfg(test)]
-            mod tests {
-                use super::*;
+#[cfg(test)]
+mod tests {
+    use super::*;
 
-                #[test]
-                fn test_caller() {
-                    callee();
-                }
-            }
-            "#,
+    #[test]
+    fn test_caller() {
+        callee();
+    }
+}
+"#,
             "callee FN_DEF FileId(1) 0..14 3..9",
             &[
                 "caller1 FN_DEF FileId(1) 15..45 18..25 : [34..40]",
-                "test_caller FN_DEF FileId(1) 93..147 108..119 : [132..138]",
+                "test_caller FN_DEF FileId(1) 95..149 110..121 : [134..140]",
             ],
             &[],
         );
@@ -278,19 +278,19 @@ mod tests {
     fn test_call_hierarchy_in_different_files() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            mod foo;
-            use foo::callee;
+//- /lib.rs
+mod foo;
+use foo::callee;
 
-            fn caller() {
-                call<|>ee();
-            }
+fn caller() {
+    call<|>ee();
+}
 
-            //- /foo/mod.rs
-            pub fn callee() {}
-            "#,
+//- /foo/mod.rs
+pub fn callee() {}
+"#,
             "callee FN_DEF FileId(2) 0..18 7..13",
-            &["caller FN_DEF FileId(1) 26..55 29..35 : [44..50]"],
+            &["caller FN_DEF FileId(1) 27..56 30..36 : [45..51]"],
             &[],
         );
     }
@@ -299,13 +299,13 @@ mod tests {
     fn test_call_hierarchy_outgoing() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            fn callee() {}
-            fn call<|>er() {
-                callee();
-                callee();
-            }
-            "#,
+//- /lib.rs
+fn callee() {}
+fn call<|>er() {
+    callee();
+    callee();
+}
+"#,
             "caller FN_DEF FileId(1) 15..58 18..24",
             &[],
             &["callee FN_DEF FileId(1) 0..14 3..9 : [33..39, 47..53]"],
@@ -316,20 +316,20 @@ mod tests {
     fn test_call_hierarchy_outgoing_in_different_files() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            mod foo;
-            use foo::callee;
+//- /lib.rs
+mod foo;
+use foo::callee;
 
-            fn call<|>er() {
-                callee();
-            }
+fn call<|>er() {
+    callee();
+}
 
-            //- /foo/mod.rs
-            pub fn callee() {}
-            "#,
-            "caller FN_DEF FileId(1) 26..55 29..35",
+//- /foo/mod.rs
+pub fn callee() {}
+"#,
+            "caller FN_DEF FileId(1) 27..56 30..36",
             &[],
-            &["callee FN_DEF FileId(2) 0..18 7..13 : [44..50]"],
+            &["callee FN_DEF FileId(2) 0..18 7..13 : [45..51]"],
         );
     }
 
@@ -337,22 +337,22 @@ mod tests {
     fn test_call_hierarchy_incoming_outgoing() {
         check_hierarchy(
             r#"
-            //- /lib.rs
-            fn caller1() {
-                call<|>er2();
-            }
+//- /lib.rs
+fn caller1() {
+    call<|>er2();
+}
 
-            fn caller2() {
-                caller3();
-            }
+fn caller2() {
+    caller3();
+}
 
-            fn caller3() {
+fn caller3() {
 
-            }
-            "#,
-            "caller2 FN_DEF FileId(1) 32..63 35..42",
+}
+"#,
+            "caller2 FN_DEF FileId(1) 33..64 36..43",
             &["caller1 FN_DEF FileId(1) 0..31 3..10 : [19..26]"],
-            &["caller3 FN_DEF FileId(1) 64..80 67..74 : [51..58]"],
+            &["caller3 FN_DEF FileId(1) 66..83 69..76 : [52..59]"],
         );
     }
 }
diff --git a/crates/ra_ide/src/completion/complete_macro_in_item_position.rs b/crates/ra_ide/src/completion/complete_macro_in_item_position.rs
index d9bb5fd25..4c33f41d4 100644
--- a/crates/ra_ide/src/completion/complete_macro_in_item_position.rs
+++ b/crates/ra_ide/src/completion/complete_macro_in_item_position.rs
@@ -42,8 +42,8 @@ mod tests {
         [
             CompletionItem {
                 label: "foo!(…)",
-                source_range: 46..46,
-                delete: 46..46,
+                source_range: 48..48,
+                delete: 48..48,
                 insert: "foo!($0)",
                 kind: Macro,
                 detail: "macro_rules! foo",
@@ -82,8 +82,8 @@ mod tests {
         [
             CompletionItem {
                 label: "vec![…]",
-                source_range: 280..280,
-                delete: 280..280,
+                source_range: 282..282,
+                delete: 282..282,
                 insert: "vec![$0]",
                 kind: Macro,
                 detail: "macro_rules! vec",
@@ -119,8 +119,8 @@ mod tests {
         [
             CompletionItem {
                 label: "foo! {…}",
-                source_range: 163..163,
-                delete: 163..163,
+                source_range: 164..164,
+                delete: 164..164,
                 insert: "foo! {$0}",
                 kind: Macro,
                 detail: "macro_rules! foo",
@@ -130,8 +130,8 @@ mod tests {
             },
             CompletionItem {
                 label: "main()",
-                source_range: 163..163,
-                delete: 163..163,
+                source_range: 164..164,
+                delete: 164..164,
                 insert: "main()$0",
                 kind: Function,
                 lookup: "main",
diff --git a/crates/ra_ide/src/completion/complete_qualified_path.rs b/crates/ra_ide/src/completion/complete_qualified_path.rs
index 02ac0166b..d3a1cbc1d 100644
--- a/crates/ra_ide/src/completion/complete_qualified_path.rs
+++ b/crates/ra_ide/src/completion/complete_qualified_path.rs
@@ -541,8 +541,8 @@ mod tests {
         [
             CompletionItem {
                 label: "m()",
-                source_range: 100..100,
-                delete: 100..100,
+                source_range: 102..102,
+                delete: 102..102,
                 insert: "m()$0",
                 kind: Function,
                 lookup: "m",
@@ -577,8 +577,8 @@ mod tests {
         [
             CompletionItem {
                 label: "m()",
-                source_range: 105..105,
-                delete: 105..105,
+                source_range: 107..107,
+                delete: 107..107,
                 insert: "m()$0",
                 kind: Method,
                 lookup: "m",
@@ -613,8 +613,8 @@ mod tests {
         [
             CompletionItem {
                 label: "C",
-                source_range: 107..107,
-                delete: 107..107,
+                source_range: 109..109,
+                delete: 109..109,
                 insert: "C",
                 kind: Const,
                 detail: "const C: i32 = 42;",
@@ -648,8 +648,8 @@ mod tests {
         [
             CompletionItem {
                 label: "T",
-                source_range: 101..101,
-                delete: 101..101,
+                source_range: 103..103,
+                delete: 103..103,
                 insert: "T",
                 kind: TypeAlias,
                 detail: "type T = i32;",
@@ -688,24 +688,24 @@ mod tests {
         [
             CompletionItem {
                 label: "PUBLIC_CONST",
-                source_range: 302..302,
-                delete: 302..302,
+                source_range: 304..304,
+                delete: 304..304,
                 insert: "PUBLIC_CONST",
                 kind: Const,
                 detail: "pub(super) const PUBLIC_CONST: u32 = 1;",
             },
             CompletionItem {
                 label: "PublicType",
-                source_range: 302..302,
-                delete: 302..302,
+                source_range: 304..304,
+                delete: 304..304,
                 insert: "PublicType",
                 kind: TypeAlias,
                 detail: "pub(super) type PublicType = u32;",
             },
             CompletionItem {
                 label: "public_method()",
-                source_range: 302..302,
-                delete: 302..302,
+                source_range: 304..304,
+                delete: 304..304,
                 insert: "public_method()$0",
                 kind: Function,
                 lookup: "public_method",
@@ -737,8 +737,8 @@ mod tests {
         [
             CompletionItem {
                 label: "m()",
-                source_range: 100..100,
-                delete: 100..100,
+                source_range: 102..102,
+                delete: 102..102,
                 insert: "m()$0",
                 kind: Function,
                 lookup: "m",
@@ -773,8 +773,8 @@ mod tests {
         [
             CompletionItem {
                 label: "m()",
-                source_range: 101..101,
-                delete: 101..101,
+                source_range: 103..103,
+                delete: 103..103,
                 insert: "m()$0",
                 kind: Function,
                 lookup: "m",
@@ -834,8 +834,8 @@ mod tests {
         [
             CompletionItem {
                 label: "m()",
-                source_range: 73..73,
-                delete: 73..73,
+                source_range: 74..74,
+                delete: 74..74,
                 insert: "m()$0",
                 kind: Function,
                 lookup: "m",
@@ -870,8 +870,8 @@ mod tests {
         [
             CompletionItem {
                 label: "m()",
-                source_range: 99..99,
-                delete: 99..99,
+                source_range: 101..101,
+                delete: 101..101,
                 insert: "m()$0",
                 kind: Function,
                 lookup: "m",
@@ -906,8 +906,8 @@ mod tests {
         [
             CompletionItem {
                 label: "m()",
-                source_range: 110..110,
-                delete: 110..110,
+                source_range: 112..112,
+                delete: 112..112,
                 insert: "m()$0",
                 kind: Function,
                 lookup: "m",
@@ -950,40 +950,40 @@ mod tests {
         [
             CompletionItem {
                 label: "C2",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "C2",
                 kind: Const,
                 detail: "const C2: ();",
             },
             CompletionItem {
                 label: "CONST",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "CONST",
                 kind: Const,
                 detail: "const CONST: u8;",
             },
             CompletionItem {
                 label: "SubTy",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "SubTy",
                 kind: TypeAlias,
                 detail: "type SubTy;",
             },
             CompletionItem {
                 label: "Ty",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "Ty",
                 kind: TypeAlias,
                 detail: "type Ty;",
             },
             CompletionItem {
                 label: "func()",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "func()$0",
                 kind: Function,
                 lookup: "func",
@@ -991,8 +991,8 @@ mod tests {
             },
             CompletionItem {
                 label: "method()",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "method()$0",
                 kind: Method,
                 lookup: "method",
@@ -1000,8 +1000,8 @@ mod tests {
             },
             CompletionItem {
                 label: "subfunc()",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "subfunc()$0",
                 kind: Function,
                 lookup: "subfunc",
@@ -1009,8 +1009,8 @@ mod tests {
             },
             CompletionItem {
                 label: "submethod()",
-                source_range: 219..219,
-                delete: 219..219,
+                source_range: 221..221,
+                delete: 221..221,
                 insert: "submethod()$0",
                 kind: Method,
                 lookup: "submethod",
@@ -1055,40 +1055,40 @@ mod tests {
         [
             CompletionItem {
                 label: "C2",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "C2",
                 kind: Const,
                 detail: "const C2: () = ();",
             },
             CompletionItem {
                 label: "CONST",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "CONST",
                 kind: Const,
                 detail: "const CONST: u8 = 0;",
             },
             CompletionItem {
                 label: "SubTy",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "SubTy",
                 kind: TypeAlias,
                 detail: "type SubTy;",
             },
             CompletionItem {
                 label: "Ty",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "Ty",
                 kind: TypeAlias,
                 detail: "type Ty;",
             },
             CompletionItem {
                 label: "func()",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "func()$0",
                 kind: Function,
                 lookup: "func",
@@ -1096,8 +1096,8 @@ mod tests {
             },
             CompletionItem {
                 label: "method()",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "method()$0",
                 kind: Method,
                 lookup: "method",
@@ -1105,8 +1105,8 @@ mod tests {
             },
             CompletionItem {
                 label: "subfunc()",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "subfunc()$0",
                 kind: Function,
                 lookup: "subfunc",
@@ -1114,8 +1114,8 @@ mod tests {
             },
             CompletionItem {
                 label: "submethod()",
-                source_range: 365..365,
-                delete: 365..365,
+                source_range: 367..367,
+                delete: 367..367,
                 insert: "submethod()$0",
                 kind: Method,
                 lookup: "submethod",
diff --git a/crates/ra_ide/src/completion/complete_unqualified_path.rs b/crates/ra_ide/src/completion/complete_unqualified_path.rs
index 68032c37e..aa2b07a2f 100644
--- a/crates/ra_ide/src/completion/complete_unqualified_path.rs
+++ b/crates/ra_ide/src/completion/complete_unqualified_path.rs
@@ -781,46 +781,46 @@ mod tests {
         [
             CompletionItem {
                 label: "bar!(…)",
-                source_range: 252..252,
-                delete: 252..252,
+                source_range: 256..256,
+                delete: 256..256,
                 insert: "bar!($0)",
                 kind: Macro,
                 detail: "macro_rules! bar",
             },
             CompletionItem {
                 label: "baz!(…)",
-                source_range: 252..252,
-                delete: 252..252,
+                source_range: 256..256,
+                delete: 256..256,
                 insert: "baz!($0)",
                 kind: Macro,
                 detail: "#[macro_export]\nmacro_rules! baz",
             },
             CompletionItem {
                 label: "foo!(…)",
-                source_range: 252..252,
-                delete: 252..252,
+                source_range: 256..256,
+                delete: 256..256,
                 insert: "foo!($0)",
                 kind: Macro,
                 detail: "macro_rules! foo",
             },
             CompletionItem {
                 label: "m1",
-                source_range: 252..252,
-                delete: 252..252,
+                source_range: 256..256,
+                delete: 256..256,
                 insert: "m1",
                 kind: Module,
             },
             CompletionItem {
                 label: "m2",
-                source_range: 252..252,
-                delete: 252..252,
+                source_range: 256..256,
+                delete: 256..256,
                 insert: "m2",
                 kind: Module,
             },
             CompletionItem {
                 label: "main()",
-                source_range: 252..252,
-                delete: 252..252,
+                source_range: 256..256,
+                delete: 256..256,
                 insert: "main()$0",
                 kind: Function,
                 lookup: "main",
@@ -850,16 +850,16 @@ mod tests {
         [
             CompletionItem {
                 label: "foo!(…)",
-                source_range: 49..49,
-                delete: 49..49,
+                source_range: 50..50,
+                delete: 50..50,
                 insert: "foo!($0)",
                 kind: Macro,
                 detail: "macro_rules! foo",
             },
             CompletionItem {
                 label: "foo()",
-                source_range: 49..49,
-                delete: 49..49,
+                source_range: 50..50,
+                delete: 50..50,
                 insert: "foo()$0",
                 kind: Function,
                 lookup: "foo",
@@ -889,16 +889,16 @@ mod tests {
         [
             CompletionItem {
                 label: "foo!(…)",
-                source_range: 57..57,
-                delete: 57..57,
+                source_range: 58..58,
+                delete: 58..58,
                 insert: "foo!($0)",
                 kind: Macro,
                 detail: "macro_rules! foo",
             },
             CompletionItem {
                 label: "main()",
-                source_range: 57..57,
-                delete: 57..57,
+                source_range: 58..58,
+                delete: 58..58,
                 insert: "main()$0",
                 kind: Function,
                 lookup: "main",
@@ -928,16 +928,16 @@ mod tests {
         [
             CompletionItem {
                 label: "foo!(…)",
-                source_range: 50..50,
-                delete: 50..50,
+                source_range: 51..51,
+                delete: 51..51,
                 insert: "foo!($0)",
                 kind: Macro,
                 detail: "macro_rules! foo",
             },
             CompletionItem {
                 label: "main()",
-                source_range: 50..50,
-                delete: 50..50,
+                source_range: 51..51,
+                delete: 51..51,
                 insert: "main()$0",
                 kind: Function,
                 lookup: "main",
diff --git a/crates/ra_ide/src/diagnostics.rs b/crates/ra_ide/src/diagnostics.rs
index 9bde1db8e..8cb0700b9 100644
--- a/crates/ra_ide/src/diagnostics.rs
+++ b/crates/ra_ide/src/diagnostics.rs
@@ -283,7 +283,7 @@ fn check_struct_shorthand_initialization(
 mod tests {
     use insta::assert_debug_snapshot;
     use ra_syntax::SourceFile;
-    use stdx::SepBy;
+    use stdx::trim_indent;
     use test_utils::assert_eq_text;
 
     use crate::mock_analysis::{analysis_and_position, single_file};
@@ -325,6 +325,8 @@ mod tests {
     ///  * this diagnostic touches the input cursor position
     ///  * that the contents of the file containing the cursor match `after` after the diagnostic fix is applied
     fn check_apply_diagnostic_fix_from_position(fixture: &str, after: &str) {
+        let after = trim_indent(after);
+
         let (analysis, file_position) = analysis_and_position(fixture);
         let diagnostic = analysis.diagnostics(file_position.file_id).unwrap().pop().unwrap();
         let mut fix = diagnostic.fix.unwrap();
@@ -336,21 +338,6 @@ mod tests {
             actual
         };
 
-        // Strip indent and empty lines from `after`, to match the behaviour of
-        // `parse_fixture` called from `analysis_and_position`.
-        let margin = fixture
-            .lines()
-            .filter(|it| it.trim_start().starts_with("//-"))
-            .map(|it| it.len() - it.trim_start().len())
-            .next()
-            .expect("empty fixture");
-        let after = after
-            .lines()
-            .filter_map(|line| if line.len() > margin { Some(&line[margin..]) } else { None })
-            .sep_by("\n")
-            .suffix("\n")
-            .to_string();
-
         assert_eq_text!(&after, &actual);
         assert!(
             diagnostic.range.start() <= file_position.offset
@@ -400,7 +387,6 @@ mod tests {
                 }
                 x / y<|>
             }
-
             //- /core/lib.rs
             pub mod result {
                 pub enum Result<T, E> { Ok(T), Err(E) }
@@ -431,7 +417,6 @@ mod tests {
                 }
                 <|>x
             }
-
             //- /core/lib.rs
             pub mod result {
                 pub enum Result<T, E> { Ok(T), Err(E) }
@@ -464,7 +449,6 @@ mod tests {
                 }
                 x <|>/ y
             }
-
             //- /core/lib.rs
             pub mod result {
                 pub enum Result<T, E> { Ok(T), Err(E) }
@@ -474,6 +458,7 @@ mod tests {
             use core::result::Result::{self, Ok, Err};
 
             type MyResult<T> = Result<T, ()>;
+
             fn div(x: i32, y: i32) -> MyResult<i32> {
                 if y == 0 {
                     return Err(());
diff --git a/crates/ra_ide/src/goto_definition.rs b/crates/ra_ide/src/goto_definition.rs
index 450ce0ba7..bea7fbfa7 100644
--- a/crates/ra_ide/src/goto_definition.rs
+++ b/crates/ra_ide/src/goto_definition.rs
@@ -192,27 +192,27 @@ mod tests {
     #[test]
     fn goto_def_for_module_declaration() {
         check_goto(
-            "
-            //- /lib.rs
-            mod <|>foo;
+            r#"
+//- /lib.rs
+mod <|>foo;
 
-            //- /foo.rs
-            // empty
-            ",
-            "foo SOURCE_FILE FileId(2) 0..10",
-            "// empty\n\n",
+//- /foo.rs
+// empty
+"#,
+            "foo SOURCE_FILE FileId(2) 0..9",
+            "// empty\n",
         );
 
         check_goto(
-            "
-            //- /lib.rs
-            mod <|>foo;
+            r#"
+//- /lib.rs
+mod <|>foo;
 
-            //- /foo/mod.rs
-            // empty
-            ",
-            "foo SOURCE_FILE FileId(2) 0..10",
-            "// empty\n\n",
+//- /foo/mod.rs
+// empty
+"#,
+            "foo SOURCE_FILE FileId(2) 0..9",
+            "// empty\n",
         );
     }
 
@@ -254,14 +254,14 @@ mod tests {
     #[test]
     fn goto_def_for_use_alias() {
         check_goto(
-            "
-            //- /lib.rs
-            use foo as bar<|>;
-
+            r#"
+//- /lib.rs
+use foo as bar<|>;
 
-            //- /foo/lib.rs
-            #[macro_export]
-            macro_rules! foo { () => { () } }",
+//- /foo/lib.rs
+#[macro_export]
+macro_rules! foo { () => { () } }
+"#,
             "SOURCE_FILE FileId(2) 0..50",
             "#[macro_export]\nmacro_rules! foo { () => { () } }\n",
         );
@@ -302,19 +302,19 @@ mod tests {
     #[test]
     fn goto_def_for_macro_defined_fn_with_arg() {
         check_goto(
-            "
-            //- /lib.rs
-            macro_rules! define_fn {
-                ($name:ident) => (fn $name() {})
-            }
+            r#"
+//- /lib.rs
+macro_rules! define_fn {
+    ($name:ident) => (fn $name() {})
+}
 
-            define_fn!(foo);
+define_fn!(foo);
 
-            fn bar() {
-               <|>foo();
-            }
-            ",
-            "foo FN_DEF FileId(1) 64..80 75..78",
+fn bar() {
+   <|>foo();
+}
+"#,
+            "foo FN_DEF FileId(1) 65..81 76..79",
             "define_fn!(foo);|foo",
         );
     }
@@ -322,19 +322,19 @@ mod tests {
     #[test]
     fn goto_def_for_macro_defined_fn_no_arg() {
         check_goto(
-            "
-            //- /lib.rs
-            macro_rules! define_fn {
-                () => (fn foo() {})
-            }
+            r#"
+//- /lib.rs
+macro_rules! define_fn {
+    () => (fn foo() {})
+}
 
-            define_fn!();
+define_fn!();
 
-            fn bar() {
-               <|>foo();
-            }
-            ",
-            "foo FN_DEF FileId(1) 51..64 51..64",
+fn bar() {
+   <|>foo();
+}
+"#,
+            "foo FN_DEF FileId(1) 52..65 52..65",
             "define_fn!();|define_fn!();",
         );
     }
@@ -804,40 +804,40 @@ mod tests {
     #[test]
     fn goto_within_macro() {
         check_goto(
-            "
-            //- /lib.rs
-            macro_rules! id {
-                ($($tt:tt)*) => ($($tt)*)
-            }
+            r#"
+//- /lib.rs
+macro_rules! id {
+    ($($tt:tt)*) => ($($tt)*)
+}
 
-            fn foo() {
-                let x = 1;
-                id!({
-                    let y = <|>x;
-                    let z = y;
-                });
-            }
-            ",
-            "x BIND_PAT FileId(1) 69..70",
+fn foo() {
+    let x = 1;
+    id!({
+        let y = <|>x;
+        let z = y;
+    });
+}
+"#,
+            "x BIND_PAT FileId(1) 70..71",
             "x",
         );
 
         check_goto(
-            "
-            //- /lib.rs
-            macro_rules! id {
-                ($($tt:tt)*) => ($($tt)*)
-            }
+            r#"
+//- /lib.rs
+macro_rules! id {
+    ($($tt:tt)*) => ($($tt)*)
+}
 
-            fn foo() {
-                let x = 1;
-                id!({
-                    let y = x;
-                    let z = <|>y;
-                });
-            }
-            ",
-            "y BIND_PAT FileId(1) 98..99",
+fn foo() {
+    let x = 1;
+    id!({
+        let y = x;
+        let z = <|>y;
+    });
+}
+"#,
+            "y BIND_PAT FileId(1) 99..100",
             "y",
         );
     }
diff --git a/crates/ra_ide/src/hover.rs b/crates/ra_ide/src/hover.rs
index d870e4cbc..a898f2e4a 100644
--- a/crates/ra_ide/src/hover.rs
+++ b/crates/ra_ide/src/hover.rs
@@ -2106,51 +2106,51 @@ fn func(foo: i32) { if true { <|>foo; }; }
         );
         assert_debug_snapshot!(actions,
             @r###"
-            [
-                GoToType(
-                    [
-                        HoverGotoTypeData {
-                            mod_path: "B",
-                            nav: NavigationTarget {
-                                file_id: FileId(
-                                    1,
-                                ),
-                                full_range: 41..54,
-                                name: "B",
-                                kind: STRUCT_DEF,
-                                focus_range: Some(
-                                    48..49,
-                                ),
-                                container_name: None,
-                                description: Some(
-                                    "struct B",
-                                ),
-                                docs: None,
-                            },
+        [
+            GoToType(
+                [
+                    HoverGotoTypeData {
+                        mod_path: "B",
+                        nav: NavigationTarget {
+                            file_id: FileId(
+                                1,
+                            ),
+                            full_range: 42..55,
+                            name: "B",
+                            kind: STRUCT_DEF,
+                            focus_range: Some(
+                                49..50,
+                            ),
+                            container_name: None,
+                            description: Some(
+                                "struct B",
+                            ),
+                            docs: None,
                         },
-                        HoverGotoTypeData {
-                            mod_path: "Foo",
-                            nav: NavigationTarget {
-                                file_id: FileId(
-                                    1,
-                                ),
-                                full_range: 0..12,
-                                name: "Foo",
-                                kind: TRAIT_DEF,
-                                focus_range: Some(
-                                    6..9,
-                                ),
-                                container_name: None,
-                                description: Some(
-                                    "trait Foo",
-                                ),
-                                docs: None,
-                            },
+                    },
+                    HoverGotoTypeData {
+                        mod_path: "Foo",
+                        nav: NavigationTarget {
+                            file_id: FileId(
+                                1,
+                            ),
+                            full_range: 0..12,
+                            name: "Foo",
+                            kind: TRAIT_DEF,
+                            focus_range: Some(
+                                6..9,
+                            ),
+                            container_name: None,
+                            description: Some(
+                                "trait Foo",
+                            ),
+                            docs: None,
                         },
-                    ],
-                ),
-            ]
-            "###);
+                    },
+                ],
+            ),
+        ]
+        "###);
     }
 
     #[test]
diff --git a/crates/ra_ide/src/references.rs b/crates/ra_ide/src/references.rs
index bb40d2043..4a96d6505 100644
--- a/crates/ra_ide/src/references.rs
+++ b/crates/ra_ide/src/references.rs
@@ -427,8 +427,8 @@ mod tests {
         let refs = analysis.find_all_refs(pos, None).unwrap().unwrap();
         check_result(
             refs,
-            "Foo STRUCT_DEF FileId(2) 16..50 27..30 Other",
-            &["FileId(1) 52..55 StructLiteral", "FileId(3) 77..80 StructLiteral"],
+            "Foo STRUCT_DEF FileId(2) 17..51 28..31 Other",
+            &["FileId(1) 53..56 StructLiteral", "FileId(3) 79..82 StructLiteral"],
         );
     }
 
@@ -455,7 +455,7 @@ mod tests {
 
         let (analysis, pos) = analysis_and_position(code);
         let refs = analysis.find_all_refs(pos, None).unwrap().unwrap();
-        check_result(refs, "foo SOURCE_FILE FileId(2) 0..35 Other", &["FileId(1) 13..16 Other"]);
+        check_result(refs, "foo SOURCE_FILE FileId(2) 0..35 Other", &["FileId(1) 14..17 Other"]);
     }
 
     #[test]
@@ -483,7 +483,7 @@ mod tests {
         check_result(
             refs,
             "Foo STRUCT_DEF FileId(3) 0..41 18..21 Other",
-            &["FileId(2) 20..23 Other", "FileId(2) 46..49 StructLiteral"],
+            &["FileId(2) 20..23 Other", "FileId(2) 47..50 StructLiteral"],
         );
     }
 
@@ -510,7 +510,7 @@ mod tests {
         let refs = analysis.find_all_refs(pos, None).unwrap().unwrap();
         check_result(
             refs,
-            "quux FN_DEF FileId(1) 18..34 25..29 Other",
+            "quux FN_DEF FileId(1) 19..35 26..30 Other",
             &["FileId(2) 16..20 StructLiteral", "FileId(3) 16..20 StructLiteral"],
         );
 
@@ -518,7 +518,7 @@ mod tests {
             analysis.find_all_refs(pos, Some(SearchScope::single_file(bar))).unwrap().unwrap();
         check_result(
             refs,
-            "quux FN_DEF FileId(1) 18..34 25..29 Other",
+            "quux FN_DEF FileId(1) 19..35 26..30 Other",
             &["FileId(3) 16..20 StructLiteral"],
         );
     }
@@ -637,8 +637,8 @@ mod tests {
         let refs = analysis.find_all_refs(pos, None).unwrap().unwrap();
         check_result(
             refs,
-            "f FN_DEF FileId(1) 25..34 28..29 Other",
-            &["FileId(2) 11..12 Other", "FileId(2) 27..28 StructLiteral"],
+            "f FN_DEF FileId(1) 26..35 29..30 Other",
+            &["FileId(2) 11..12 Other", "FileId(2) 28..29 StructLiteral"],
         );
     }
 
diff --git a/crates/ra_ide/src/runnables.rs b/crates/ra_ide/src/runnables.rs
index 8105ef373..f569a3f17 100644
--- a/crates/ra_ide/src/runnables.rs
+++ b/crates/ra_ide/src/runnables.rs
@@ -310,11 +310,11 @@ mod tests {
                     file_id: FileId(
                         1,
                     ),
-                    full_range: 22..46,
+                    full_range: 23..47,
                     name: "test_foo",
                     kind: FN_DEF,
                     focus_range: Some(
-                        33..41,
+                        34..42,
                     ),
                     container_name: None,
                     description: None,
@@ -335,11 +335,11 @@ mod tests {
                     file_id: FileId(
                         1,
                     ),
-                    full_range: 47..81,
+                    full_range: 49..83,
                     name: "test_foo",
                     kind: FN_DEF,
                     focus_range: Some(
-                        68..76,
+                        70..78,
                     ),
                     container_name: None,
                     description: None,
@@ -360,11 +360,11 @@ mod tests {
                     file_id: FileId(
                         1,
                     ),
-                    full_range: 82..104,
+                    full_range: 85..107,
                     name: "bench",
                     kind: FN_DEF,
                     focus_range: Some(
-                        94..99,
+                        97..102,
                     ),
                     container_name: None,
                     description: None,
@@ -424,7 +424,7 @@ mod tests {
                     file_id: FileId(
                         1,
                     ),
-                    full_range: 22..64,
+                    full_range: 23..65,
                     name: "foo",
                     kind: FN_DEF,
                     focus_range: None,
@@ -489,7 +489,7 @@ mod tests {
                     file_id: FileId(
                         1,
                     ),
-                    full_range: 51..105,
+                    full_range: 52..106,
                     name: "foo",
                     kind: FN_DEF,
                     focus_range: None,
diff --git a/crates/rust-analyzer/tests/heavy_tests/main.rs b/crates/rust-analyzer/tests/heavy_tests/main.rs
index e0de377b4..58839b14a 100644
--- a/crates/rust-analyzer/tests/heavy_tests/main.rs
+++ b/crates/rust-analyzer/tests/heavy_tests/main.rs
@@ -178,14 +178,8 @@ fn main() {}
 pub use std::collections::HashMap;
 "#,
                 "range": {
-                    "end": {
-                        "character": 0,
-                        "line": 7
-                    },
-                    "start": {
-                        "character": 0,
-                        "line": 0
-                    }
+                    "end": { "character": 0, "line": 6 },
+                    "start": { "character": 0, "line": 0 }
                 }
             }
         ]),
@@ -244,14 +238,8 @@ fn main() {}
 pub use std::collections::HashMap;
 "#,
                 "range": {
-                    "end": {
-                        "character": 0,
-                        "line": 10
-                    },
-                    "start": {
-                        "character": 0,
-                        "line": 0
-                    }
+                    "end": { "character": 0, "line": 9 },
+                    "start": { "character": 0, "line": 0 }
                 }
             }
         ]),
diff --git a/crates/stdx/src/lib.rs b/crates/stdx/src/lib.rs
index 100db9d5d..08ac6f70f 100644
--- a/crates/stdx/src/lib.rs
+++ b/crates/stdx/src/lib.rs
@@ -128,3 +128,85 @@ pub fn split_delim(haystack: &str, delim: char) -> Option<(&str, &str)> {
     let idx = haystack.find(delim)?;
     Some((&haystack[..idx], &haystack[idx + delim.len_utf8()..]))
 }
+
+pub fn trim_indent(mut text: &str) -> String {
+    if text.starts_with('\n') {
+        text = &text[1..];
+    }
+    let indent = text
+        .lines()
+        .filter(|it| !it.trim().is_empty())
+        .map(|it| it.len() - it.trim_start().len())
+        .min()
+        .unwrap_or(0);
+    lines_with_ends(text)
+        .map(
+            |line| {
+                if line.len() <= indent {
+                    line.trim_start_matches(' ')
+                } else {
+                    &line[indent..]
+                }
+            },
+        )
+        .collect()
+}
+
+pub fn lines_with_ends(text: &str) -> LinesWithEnds {
+    LinesWithEnds { text }
+}
+
+pub struct LinesWithEnds<'a> {
+    text: &'a str,
+}
+
+impl<'a> Iterator for LinesWithEnds<'a> {
+    type Item = &'a str;
+    fn next(&mut self) -> Option<&'a str> {
+        if self.text.is_empty() {
+            return None;
+        }
+        let idx = self.text.find('\n').map_or(self.text.len(), |it| it + 1);
+        let (res, next) = self.text.split_at(idx);
+        self.text = next;
+        Some(res)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_trim_indent() {
+        assert_eq!(trim_indent(""), "");
+        assert_eq!(
+            trim_indent(
+                "
+            hello
+            world
+"
+            ),
+            "hello\nworld\n"
+        );
+        assert_eq!(
+            trim_indent(
+                "
+            hello
+            world"
+            ),
+            "hello\nworld"
+        );
+        assert_eq!(trim_indent("    hello\n    world\n"), "hello\nworld\n");
+        assert_eq!(
+            trim_indent(
+                "
+            fn main() {
+                return 92;
+            }
+        "
+            ),
+            "fn main() {\n    return 92;\n}\n"
+        );
+    }
+}
diff --git a/crates/test_utils/src/fixture.rs b/crates/test_utils/src/fixture.rs
index 0cd51ab3e..8747fa4a5 100644
--- a/crates/test_utils/src/fixture.rs
+++ b/crates/test_utils/src/fixture.rs
@@ -2,7 +2,7 @@
 //! rust-analyzer database from a single string.
 
 use rustc_hash::FxHashMap;
-use stdx::split_delim;
+use stdx::{lines_with_ends, split_delim, trim_indent};
 
 #[derive(Debug, Eq, PartialEq)]
 pub struct Fixture {
@@ -26,47 +26,35 @@ impl Fixture {
     ///  // - other meta
     ///  ```
     pub fn parse(ra_fixture: &str) -> Vec<Fixture> {
-        let fixture = indent_first_line(ra_fixture);
-        let margin = fixture_margin(&fixture);
-
-        let mut lines = fixture
-        .split('\n') // don't use `.lines` to not drop `\r\n`
-        .enumerate()
-        .filter_map(|(ix, line)| {
-            if line.len() >= margin {
-                assert!(line[..margin].trim().is_empty());
-                let line_content = &line[margin..];
-                if !line_content.starts_with("//-") {
-                    assert!(
-                        !line_content.contains("//-"),
-                        r#"Metadata line {} has invalid indentation. All metadata lines need to have the same indentation.
-The offending line: {:?}"#,
-                        ix,
-                        line
-                    );
-                }
-                Some(line_content)
-            } else {
-                assert!(line.trim().is_empty());
-                None
-            }
-        });
+        let fixture = trim_indent(ra_fixture);
 
         let mut res: Vec<Fixture> = Vec::new();
-        for line in lines.by_ref() {
+
+        for (ix, line) in lines_with_ends(&fixture).enumerate() {
+            if line.contains("//-") {
+                assert!(
+                    line.starts_with("//-"),
+                    "Metadata line {} has invalid indentation. \
+                     All metadata lines need to have the same indentation.\n\
+                     The offending line: {:?}",
+                    ix,
+                    line
+                );
+            }
+
             if line.starts_with("//-") {
-                let meta = Fixture::parse_single(line);
+                let meta = Fixture::parse_meta_line(line);
                 res.push(meta)
             } else if let Some(entry) = res.last_mut() {
                 entry.text.push_str(line);
-                entry.text.push('\n');
             }
         }
+
         res
     }
 
     //- /lib.rs crate:foo deps:bar,baz cfg:foo=a,bar=b env:OUTDIR=path/to,OTHER=foo
-    pub fn parse_single(meta: &str) -> Fixture {
+    pub fn parse_meta_line(meta: &str) -> Fixture {
         assert!(meta.starts_with("//-"));
         let meta = meta["//-".len()..].trim();
         let components = meta.split_ascii_whitespace().collect::<Vec<_>>();
@@ -118,51 +106,6 @@ The offending line: {:?}"#,
     }
 }
 
-/// Adjusts the indentation of the first line to the minimum indentation of the rest of the lines.
-/// This allows fixtures to start off in a different indentation, e.g. to align the first line with
-/// the other lines visually:
-/// ```
-/// let fixture = "//- /lib.rs
-///                mod foo;
-///                //- /foo.rs
-///                fn bar() {}
-/// ";
-/// assert_eq!(fixture_margin(fixture),
-/// "               //- /lib.rs
-///                mod foo;
-///                //- /foo.rs
-///                fn bar() {}
-/// ")
-/// ```
-fn indent_first_line(fixture: &str) -> String {
-    if fixture.is_empty() {
-        return String::new();
-    }
-    let mut lines = fixture.lines();
-    let first_line = lines.next().unwrap();
-    if first_line.contains("//-") {
-        let rest = lines.collect::<Vec<_>>().join("\n");
-        let fixed_margin = fixture_margin(&rest);
-        let fixed_indent = fixed_margin - indent_len(first_line);
-        format!("\n{}{}\n{}", " ".repeat(fixed_indent), first_line, rest)
-    } else {
-        fixture.to_owned()
-    }
-}
-
-fn fixture_margin(fixture: &str) -> usize {
-    fixture
-        .lines()
-        .filter(|it| it.trim_start().starts_with("//-"))
-        .map(indent_len)
-        .next()
-        .expect("empty fixture")
-}
-
-fn indent_len(s: &str) -> usize {
-    s.len() - s.trim_start().len()
-}
-
 #[test]
 #[should_panic]
 fn parse_fixture_checks_further_indented_metadata() {
@@ -179,25 +122,6 @@ fn parse_fixture_checks_further_indented_metadata() {
 }
 
 #[test]
-fn parse_fixture_can_handle_dedented_first_line() {
-    let fixture = "//- /lib.rs
-                   mod foo;
-                   //- /foo.rs
-                   struct Bar;
-";
-    assert_eq!(
-        Fixture::parse(fixture),
-        Fixture::parse(
-            "//- /lib.rs
-mod foo;
-//- /foo.rs
-struct Bar;
-"
-        )
-    )
-}
-
-#[test]
 fn parse_fixture_gets_full_meta() {
     let parsed = Fixture::parse(
         r"
@@ -208,7 +132,7 @@ fn parse_fixture_gets_full_meta() {
     assert_eq!(1, parsed.len());
 
     let meta = &parsed[0];
-    assert_eq!("mod m;\n\n", meta.text);
+    assert_eq!("mod m;\n", meta.text);
 
     assert_eq!("foo", meta.crate_name.as_ref().unwrap());
     assert_eq!("/lib.rs", meta.path);
diff --git a/crates/test_utils/src/lib.rs b/crates/test_utils/src/lib.rs
index 3fd8505ed..eaeeeb97b 100644
--- a/crates/test_utils/src/lib.rs
+++ b/crates/test_utils/src/lib.rs
@@ -43,7 +43,7 @@ macro_rules! assert_eq_text {
             if left.trim() == right.trim() {
                 eprintln!("Left:\n{:?}\n\nRight:\n{:?}\n\nWhitespace difference\n", left, right);
             } else {
-                let changeset = $crate::__Changeset::new(right, left, "\n");
+                let changeset = $crate::__Changeset::new(left, right, "\n");
                 eprintln!("Left:\n{}\n\nRight:\n{}\n\nDiff:\n{}\n", left, right, changeset);
             }
             eprintln!($($tt)*);