2 files changed, 104 insertions, 0 deletions

diff --git a/crates/ra_hir_ty/src/tests/patterns.rs b/crates/ra_hir_ty/src/tests/patterns.rs
index 0c5f972a2..fe62587c0 100644
--- a/crates/ra_hir_ty/src/tests/patterns.rs
+++ b/crates/ra_hir_ty/src/tests/patterns.rs
@@ -520,3 +520,53 @@ fn main() {
         105..107 '()': ()
     ")
 }
+
+#[test]
+fn match_ergonomics_in_closure_params() {
+    assert_snapshot!(
+        infer(r#"
+#[lang = "fn_once"]
+trait FnOnce<Args> {
+    type Output;
+}
+
+fn foo<T, U, F: FnOnce(T) -> U>(t: T, f: F) -> U { loop {} }
+
+fn test() {
+    foo(&(1, "a"), |&(x, y)| x); // normal, no match ergonomics
+    foo(&(1, "a"), |(x, y)| x);
+}
+"#),
+        @r###"
+    94..95 't': T
+    100..101 'f': F
+    111..122 '{ loop {} }': U
+    113..120 'loop {}': !
+    118..120 '{}': ()
+    134..233 '{     ... x); }': ()
+    140..143 'foo': fn foo<&(i32, &str), i32, |&(i32, &str)| -> i32>(&(i32, &str), |&(i32, &str)| -> i32) -> i32
+    140..167 'foo(&(...y)| x)': i32
+    144..153 '&(1, "a")': &(i32, &str)
+    145..153 '(1, "a")': (i32, &str)
+    146..147 '1': i32
+    149..152 '"a"': &str
+    155..166 '|&(x, y)| x': |&(i32, &str)| -> i32
+    156..163 '&(x, y)': &(i32, &str)
+    157..163 '(x, y)': (i32, &str)
+    158..159 'x': i32
+    161..162 'y': &str
+    165..166 'x': i32
+    204..207 'foo': fn foo<&(i32, &str), &i32, |&(i32, &str)| -> &i32>(&(i32, &str), |&(i32, &str)| -> &i32) -> &i32
+    204..230 'foo(&(...y)| x)': &i32
+    208..217 '&(1, "a")': &(i32, &str)
+    209..217 '(1, "a")': (i32, &str)
+    210..211 '1': i32
+    213..216 '"a"': &str
+    219..229 '|(x, y)| x': |&(i32, &str)| -> &i32
+    220..226 '(x, y)': (i32, &str)
+    221..222 'x': &i32
+    224..225 'y': &&str
+    228..229 'x': &i32
+    "###
+    );
+}
diff --git a/crates/ra_hir_ty/src/tests/simple.rs b/crates/ra_hir_ty/src/tests/simple.rs
index 839491b9e..88309157b 100644
--- a/crates/ra_hir_ty/src/tests/simple.rs
+++ b/crates/ra_hir_ty/src/tests/simple.rs
@@ -1943,3 +1943,57 @@ fn test() {
     "###
     );
 }
+
+#[test]
+fn infer_labelled_break_with_val() {
+    assert_snapshot!(
+        infer(r#"
+fn foo() {
+    let _x = || 'outer: loop {
+        let inner = 'inner: loop {
+            let i = Default::default();
+            if (break 'outer i) {
+                loop { break 'inner 5i8; };
+            } else if true {
+                break 'inner 6;
+            }
+            break 7;
+        };
+        break inner < 8;
+    };
+}
+"#),
+        @r###"
+    10..336 '{     ...  }; }': ()
+    20..22 '_x': || -> bool
+    25..333 '|| 'ou...     }': || -> bool
+    28..333 ''outer...     }': bool
+    41..333 '{     ...     }': ()
+    55..60 'inner': i8
+    63..301 ''inner...     }': i8
+    76..301 '{     ...     }': ()
+    94..95 'i': bool
+    98..114 'Defaul...efault': {unknown}
+    98..116 'Defaul...ault()': bool
+    130..270 'if (br...     }': ()
+    134..148 'break 'outer i': !
+    147..148 'i': bool
+    150..209 '{     ...     }': ()
+    168..194 'loop {...5i8; }': !
+    173..194 '{ brea...5i8; }': ()
+    175..191 'break ...er 5i8': !
+    188..191 '5i8': i8
+    215..270 'if tru...     }': ()
+    218..222 'true': bool
+    223..270 '{     ...     }': ()
+    241..255 'break 'inner 6': !
+    254..255 '6': i8
+    283..290 'break 7': !
+    289..290 '7': i8
+    311..326 'break inner < 8': !
+    317..322 'inner': i8
+    317..326 'inner < 8': bool
+    325..326 '8': i8
+    "###
+    );
+}