Auto merge of rust-lang#8983 - Alexendoo:redundant_closure_tests, r=g…

…iraffate Add tests for some fixed `redundant_closure` issues closes rust-lang#7861 closes rust-lang#5939 changelog: none
flip1995 · Jun 13, 2022 · b95ce0e · b95ce0e
2 parents b3c94c0 + eae9c56
commit b95ce0e
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diff --git a/tests/ui/eta.fixed b/tests/ui/eta.fixed
@@ -291,3 +291,15 @@ fn coerced_closure() {
     fn slice_fn(_: impl FnOnce() -> &'static [u8]) {}
     slice_fn(|| arr());
 }
+
+// https://github.com/rust-lang/rust-clippy/issues/7861
+fn box_dyn() {
+    fn f(_: impl Fn(usize) -> Box<dyn std::any::Any>) {}
+    f(|x| Box::new(x));
+}
+
+// https://github.com/rust-lang/rust-clippy/issues/5939
+fn not_general_enough() {
+    fn f(_: impl FnMut(&Path) -> std::io::Result<()>) {}
+    f(|path| std::fs::remove_file(path));
+}
diff --git a/tests/ui/eta.rs b/tests/ui/eta.rs
@@ -291,3 +291,15 @@ fn coerced_closure() {
     fn slice_fn(_: impl FnOnce() -> &'static [u8]) {}
     slice_fn(|| arr());
 }
+
+// https://github.com/rust-lang/rust-clippy/issues/7861
+fn box_dyn() {
+    fn f(_: impl Fn(usize) -> Box<dyn std::any::Any>) {}
+    f(|x| Box::new(x));
+}
+
+// https://github.com/rust-lang/rust-clippy/issues/5939
+fn not_general_enough() {
+    fn f(_: impl FnMut(&Path) -> std::io::Result<()>) {}
+    f(|path| std::fs::remove_file(path));
+}