1 files changed, 549 insertions, 0 deletions

diff --git a/crates/ra_analysis/tests/test/main.rs b/crates/ra_analysis/tests/test/main.rs
new file mode 100644
index 000000000..23a5799b9
--- /dev/null
+++ b/crates/ra_analysis/tests/test/main.rs
@@ -0,0 +1,549 @@
+mod runnables;
+mod type_of;
+
+use ra_syntax::TextRange;
+use test_utils::{assert_eq_dbg, assert_eq_text};
+
+use ra_analysis::{
+    mock_analysis::{analysis_and_position, single_file, single_file_with_position, MockAnalysis},
+    AnalysisChange, CrateGraph, FileId, FnSignatureInfo,
+};
+
+fn get_signature(text: &str) -> (FnSignatureInfo, Option<usize>) {
+    let (analysis, position) = single_file_with_position(text);
+    analysis.resolve_callable(position).unwrap().unwrap()
+}
+
+#[test]
+fn approximate_resolve_works_in_items() {
+    let (analysis, pos) = analysis_and_position(
+        "
+        //- /lib.rs
+        struct Foo;
+        enum E { X(Foo<|>) }
+    ",
+    );
+
+    let symbols = analysis.approximately_resolve_symbol(pos).unwrap().unwrap();
+    assert_eq_dbg(
+        r#"ReferenceResolution {
+            reference_range: [23; 26),
+            resolves_to: [NavigationTarget { file_id: FileId(1), name: "Foo", kind: STRUCT_DEF, range: [0; 11), ptr: Some(LocalSyntaxPtr { range: [0; 11), kind: STRUCT_DEF }) }]
+        }"#,
+        &symbols,
+    );
+}
+
+#[test]
+fn test_resolve_module() {
+    let (analysis, pos) = analysis_and_position(
+        "
+        //- /lib.rs
+        mod <|>foo;
+        //- /foo.rs
+        // empty
+    ",
+    );
+
+    let symbols = analysis.approximately_resolve_symbol(pos).unwrap().unwrap();
+    assert_eq_dbg(
+        r#"ReferenceResolution {
+            reference_range: [4; 7),
+            resolves_to: [NavigationTarget { file_id: FileId(2), name: "foo", kind: MODULE, range: [0; 0), ptr: None }]
+        }"#,
+        &symbols,
+    );
+
+    let (analysis, pos) = analysis_and_position(
+        "
+        //- /lib.rs
+        mod <|>foo;
+        //- /foo/mod.rs
+        // empty
+    ",
+    );
+
+    let symbols = analysis.approximately_resolve_symbol(pos).unwrap().unwrap();
+    assert_eq_dbg(
+        r#"ReferenceResolution {
+            reference_range: [4; 7),
+            resolves_to: [NavigationTarget { file_id: FileId(2), name: "foo", kind: MODULE, range: [0; 0), ptr: None }]
+        }"#,
+        &symbols,
+    );
+}
+
+#[test]
+fn test_unresolved_module_diagnostic() {
+    let (analysis, file_id) = single_file("mod foo;");
+    let diagnostics = analysis.diagnostics(file_id).unwrap();
+    assert_eq_dbg(
+        r#"[Diagnostic {
+            message: "unresolved module",
+            range: [4; 7),
+            fix: Some(SourceChange {
+                label: "create module",
+                source_file_edits: [],
+                file_system_edits: [CreateFile { source_root: SourceRootId(0), path: "foo.rs" }],
+                cursor_position: None }),
+                severity: Error }]"#,
+        &diagnostics,
+    );
+}
+
+#[test]
+fn test_unresolved_module_diagnostic_no_diag_for_inline_mode() {
+    let (analysis, file_id) = single_file("mod foo {}");
+    let diagnostics = analysis.diagnostics(file_id).unwrap();
+    assert_eq_dbg(r#"[]"#, &diagnostics);
+}
+
+#[test]
+fn test_resolve_parent_module() {
+    let (analysis, pos) = analysis_and_position(
+        "
+        //- /lib.rs
+        mod foo;
+        //- /foo.rs
+        <|>// empty
+    ",
+    );
+    let symbols = analysis.parent_module(pos).unwrap();
+    assert_eq_dbg(
+        r#"[NavigationTarget { file_id: FileId(1), name: "foo", kind: MODULE, range: [4; 7), ptr: None }]"#,
+        &symbols,
+    );
+}
+
+#[test]
+fn test_resolve_parent_module_for_inline() {
+    let (analysis, pos) = analysis_and_position(
+        "
+        //- /lib.rs
+        mod foo {
+            mod bar {
+                mod baz { <|> }
+            }
+        }
+    ",
+    );
+    let symbols = analysis.parent_module(pos).unwrap();
+    assert_eq_dbg(
+        r#"[NavigationTarget { file_id: FileId(1), name: "bar", kind: MODULE, range: [18; 21), ptr: None }]"#,
+        &symbols,
+    );
+}
+
+#[test]
+fn test_resolve_crate_root() {
+    let mock = MockAnalysis::with_files(
+        "
+        //- /lib.rs
+        mod foo;
+        //- /foo.rs
+        // emtpy <|>
+    ",
+    );
+    let root_file = mock.id_of("/lib.rs");
+    let mod_file = mock.id_of("/foo.rs");
+    let mut host = mock.analysis_host();
+    assert!(host.analysis().crate_for(mod_file).unwrap().is_empty());
+
+    let mut crate_graph = CrateGraph::default();
+    let crate_id = crate_graph.add_crate_root(root_file);
+    let mut change = AnalysisChange::new();
+    change.set_crate_graph(crate_graph);
+    host.apply_change(change);
+
+    assert_eq!(host.analysis().crate_for(mod_file).unwrap(), vec![crate_id]);
+}
+
+#[test]
+fn test_fn_signature_two_args_first() {
+    let (desc, param) = get_signature(
+        r#"fn foo(x: u32, y: u32) -> u32 {x + y}
+fn bar() { foo(<|>3, ); }"#,
+    );
+
+    assert_eq!(desc.name, "foo".to_string());
+    assert_eq!(desc.params, vec!("x".to_string(), "y".to_string()));
+    assert_eq!(desc.ret_type, Some("-> u32".into()));
+    assert_eq!(param, Some(0));
+}
+
+#[test]
+fn test_fn_signature_two_args_second() {
+    let (desc, param) = get_signature(
+        r#"fn foo(x: u32, y: u32) -> u32 {x + y}
+fn bar() { foo(3, <|>); }"#,
+    );
+
+    assert_eq!(desc.name, "foo".to_string());
+    assert_eq!(desc.params, vec!("x".to_string(), "y".to_string()));
+    assert_eq!(desc.ret_type, Some("-> u32".into()));
+    assert_eq!(param, Some(1));
+}
+
+#[test]
+fn test_fn_signature_for_impl() {
+    let (desc, param) = get_signature(
+        r#"struct F; impl F { pub fn new() { F{}} }
+fn bar() {let _ : F = F::new(<|>);}"#,
+    );
+
+    assert_eq!(desc.name, "new".to_string());
+    assert_eq!(desc.params, Vec::<String>::new());
+    assert_eq!(desc.ret_type, None);
+    assert_eq!(param, None);
+}
+
+#[test]
+fn test_fn_signature_for_method_self() {
+    let (desc, param) = get_signature(
+        r#"struct F;
+impl F {
+    pub fn new() -> F{
+        F{}
+    }
+
+    pub fn do_it(&self) {}
+}
+
+fn bar() {
+    let f : F = F::new();
+    f.do_it(<|>);
+}"#,
+    );
+
+    assert_eq!(desc.name, "do_it".to_string());
+    assert_eq!(desc.params, vec!["&self".to_string()]);
+    assert_eq!(desc.ret_type, None);
+    assert_eq!(param, None);
+}
+
+#[test]
+fn test_fn_signature_for_method_with_arg() {
+    let (desc, param) = get_signature(
+        r#"struct F;
+impl F {
+    pub fn new() -> F{
+        F{}
+    }
+
+    pub fn do_it(&self, x: i32) {}
+}
+
+fn bar() {
+    let f : F = F::new();
+    f.do_it(<|>);
+}"#,
+    );
+
+    assert_eq!(desc.name, "do_it".to_string());
+    assert_eq!(desc.params, vec!["&self".to_string(), "x".to_string()]);
+    assert_eq!(desc.ret_type, None);
+    assert_eq!(param, Some(1));
+}
+
+#[test]
+fn test_fn_signature_with_docs_simple() {
+    let (desc, param) = get_signature(
+        r#"
+// test
+fn foo(j: u32) -> u32 {
+    j
+}
+
+fn bar() {
+    let _ = foo(<|>);
+}
+"#,
+    );
+
+    assert_eq!(desc.name, "foo".to_string());
+    assert_eq!(desc.params, vec!["j".to_string()]);
+    assert_eq!(desc.ret_type, Some("-> u32".to_string()));
+    assert_eq!(param, Some(0));
+    assert_eq!(desc.label, "fn foo(j: u32) -> u32".to_string());
+    assert_eq!(desc.doc, Some("test".into()));
+}
+
+#[test]
+fn test_fn_signature_with_docs() {
+    let (desc, param) = get_signature(
+        r#"
+/// Adds one to the number given.
+///
+/// # Examples
+///
+/// ```
+/// let five = 5;
+///
+/// assert_eq!(6, my_crate::add_one(5));
+/// ```
+pub fn add_one(x: i32) -> i32 {
+    x + 1
+}
+
+pub fn do() {
+    add_one(<|>
+}"#,
+    );
+
+    assert_eq!(desc.name, "add_one".to_string());
+    assert_eq!(desc.params, vec!["x".to_string()]);
+    assert_eq!(desc.ret_type, Some("-> i32".to_string()));
+    assert_eq!(param, Some(0));
+    assert_eq!(desc.label, "pub fn add_one(x: i32) -> i32".to_string());
+    assert_eq!(
+        desc.doc,
+        Some(
+            r#"Adds one to the number given.
+
+# Examples
+
+```rust
+let five = 5;
+
+assert_eq!(6, my_crate::add_one(5));
+```"#
+                .into()
+        )
+    );
+}
+
+#[test]
+fn test_fn_signature_with_docs_impl() {
+    let (desc, param) = get_signature(
+        r#"
+struct addr;
+impl addr {
+    /// Adds one to the number given.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// let five = 5;
+    ///
+    /// assert_eq!(6, my_crate::add_one(5));
+    /// ```
+    pub fn add_one(x: i32) -> i32 {
+        x + 1
+    }
+}
+
+pub fn do_it() {
+    addr {};
+    addr::add_one(<|>);
+}"#,
+    );
+
+    assert_eq!(desc.name, "add_one".to_string());
+    assert_eq!(desc.params, vec!["x".to_string()]);
+    assert_eq!(desc.ret_type, Some("-> i32".to_string()));
+    assert_eq!(param, Some(0));
+    assert_eq!(desc.label, "pub fn add_one(x: i32) -> i32".to_string());
+    assert_eq!(
+        desc.doc,
+        Some(
+            r#"Adds one to the number given.
+
+# Examples
+
+```rust
+let five = 5;
+
+assert_eq!(6, my_crate::add_one(5));
+```"#
+                .into()
+        )
+    );
+}
+
+#[test]
+fn test_fn_signature_with_docs_from_actix() {
+    let (desc, param) = get_signature(
+        r#"
+pub trait WriteHandler<E>
+where
+    Self: Actor,
+    Self::Context: ActorContext,
+{
+    /// Method is called when writer emits error.
+    ///
+    /// If this method returns `ErrorAction::Continue` writer processing
+    /// continues otherwise stream processing stops.
+    fn error(&mut self, err: E, ctx: &mut Self::Context) -> Running {
+        Running::Stop
+    }
+
+    /// Method is called when writer finishes.
+    ///
+    /// By default this method stops actor's `Context`.
+    fn finished(&mut self, ctx: &mut Self::Context) {
+        ctx.stop()
+    }
+}
+
+pub fn foo() {
+    WriteHandler r;
+    r.finished(<|>);
+}
+
+"#,
+    );
+
+    assert_eq!(desc.name, "finished".to_string());
+    assert_eq!(
+        desc.params,
+        vec!["&mut self".to_string(), "ctx".to_string()]
+    );
+    assert_eq!(desc.ret_type, None);
+    assert_eq!(param, Some(1));
+    assert_eq!(
+        desc.doc,
+        Some(
+            r#"Method is called when writer finishes.
+
+By default this method stops actor's `Context`."#
+                .into()
+        )
+    );
+}
+
+fn get_all_refs(text: &str) -> Vec<(FileId, TextRange)> {
+    let (analysis, position) = single_file_with_position(text);
+    analysis.find_all_refs(position).unwrap()
+}
+
+#[test]
+fn test_find_all_refs_for_local() {
+    let code = r#"
+    fn main() {
+        let mut i = 1;
+        let j = 1;
+        i = i<|> + j;
+
+        {
+            i = 0;
+        }
+
+        i = 5;
+    }"#;
+
+    let refs = get_all_refs(code);
+    assert_eq!(refs.len(), 5);
+}
+
+#[test]
+fn test_find_all_refs_for_param_inside() {
+    let code = r#"
+    fn foo(i : u32) -> u32 {
+        i<|>
+    }"#;
+
+    let refs = get_all_refs(code);
+    assert_eq!(refs.len(), 2);
+}
+
+#[test]
+fn test_find_all_refs_for_fn_param() {
+    let code = r#"
+    fn foo(i<|> : u32) -> u32 {
+        i
+    }"#;
+
+    let refs = get_all_refs(code);
+    assert_eq!(refs.len(), 2);
+}
+#[test]
+fn test_rename_for_local() {
+    test_rename(
+        r#"
+    fn main() {
+        let mut i = 1;
+        let j = 1;
+        i = i<|> + j;
+
+        {
+            i = 0;
+        }
+
+        i = 5;
+    }"#,
+        "k",
+        r#"
+    fn main() {
+        let mut k = 1;
+        let j = 1;
+        k = k + j;
+
+        {
+            k = 0;
+        }
+
+        k = 5;
+    }"#,
+    );
+}
+
+#[test]
+fn test_rename_for_param_inside() {
+    test_rename(
+        r#"
+    fn foo(i : u32) -> u32 {
+        i<|>
+    }"#,
+        "j",
+        r#"
+    fn foo(j : u32) -> u32 {
+        j
+    }"#,
+    );
+}
+
+#[test]
+fn test_rename_refs_for_fn_param() {
+    test_rename(
+        r#"
+    fn foo(i<|> : u32) -> u32 {
+        i
+    }"#,
+        "new_name",
+        r#"
+    fn foo(new_name : u32) -> u32 {
+        new_name
+    }"#,
+    );
+}
+
+#[test]
+fn test_rename_for_mut_param() {
+    test_rename(
+        r#"
+    fn foo(mut i<|> : u32) -> u32 {
+        i
+    }"#,
+        "new_name",
+        r#"
+    fn foo(mut new_name : u32) -> u32 {
+        new_name
+    }"#,
+    );
+}
+fn test_rename(text: &str, new_name: &str, expected: &str) {
+    let (analysis, position) = single_file_with_position(text);
+    let edits = analysis.rename(position, new_name).unwrap();
+    let mut text_edit_bulder = ra_text_edit::TextEditBuilder::default();
+    let mut file_id: Option<FileId> = None;
+    for edit in edits {
+        file_id = Some(edit.file_id);
+        for atom in edit.edit.as_atoms() {
+            text_edit_bulder.replace(atom.delete, atom.insert.clone());
+        }
+    }
+    let result = text_edit_bulder
+        .finish()
+        .apply(&*analysis.file_text(file_id.unwrap()));
+    assert_eq_text!(expected, &*result);
+}