Merge commit 'f51aade56f93175dde89177a92e3669ebd8e7592' into clippyup

[rust.git] / src / tools / clippy / tests / ui / needless_match.rs

diff --git a/src/tools/clippy/tests/ui/needless_match.rs b/src/tools/clippy/tests/ui/needless_match.rs
index f66f01d7ccaf4ef2f96be1e2e2247cebf83884f2..809c694bf400464bb4685b115010b04c63ce6147 100644 (file)
--- a/src/tools/clippy/tests/ui/needless_match.rs
+++ b/src/tools/clippy/tests/ui/needless_match.rs
@@ -244,4 +244,50 @@ fn as_mut(&mut self) -> Result<&mut i32, &mut i32> {
     }
 }
 
+mod issue9084 {
+    fn wildcard_if() {
+        let mut some_bool = true;
+        let e = Some(1);
+
+        // should lint
+        let _ = match e {
+            _ if some_bool => e,
+            _ => e,
+        };
+
+        // should lint
+        let _ = match e {
+            Some(i) => Some(i),
+            _ if some_bool => e,
+            _ => e,
+        };
+
+        // should not lint
+        let _ = match e {
+            _ if some_bool => e,
+            _ => Some(2),
+        };
+
+        // should not lint
+        let _ = match e {
+            Some(i) => Some(i + 1),
+            _ if some_bool => e,
+            _ => e,
+        };
+
+        // should not lint (guard has side effects)
+        let _ = match e {
+            Some(i) => Some(i),
+            _ if {
+                some_bool = false;
+                some_bool
+            } =>
+            {
+                e
+            },
+            _ => e,
+        };
+    }
+}
+
 fn main() {}