Update upstream source from tag 'upstream/1.52.1+dfsg1'

[rustc.git] / src / tools / clippy / tests / ui / unit_cmp.rs

diff --git a/src/tools/clippy/tests/ui/unit_cmp.rs b/src/tools/clippy/tests/ui/unit_cmp.rs
new file mode 100644 (file)
index 0000000..8d3a4ee
--- /dev/null
+++ b/src/tools/clippy/tests/ui/unit_cmp.rs
@@ -0,0 +1,57 @@
+#![warn(clippy::unit_cmp)]
+#![allow(clippy::no_effect, clippy::unnecessary_operation)]
+
+#[derive(PartialEq)]
+pub struct ContainsUnit(()); // should be fine
+
+fn main() {
+    // this is fine
+    if true == false {}
+
+    // this warns
+    if {
+        true;
+    } == {
+        false;
+    } {}
+
+    if {
+        true;
+    } > {
+        false;
+    } {}
+
+    assert_eq!(
+        {
+            true;
+        },
+        {
+            false;
+        }
+    );
+    debug_assert_eq!(
+        {
+            true;
+        },
+        {
+            false;
+        }
+    );
+
+    assert_ne!(
+        {
+            true;
+        },
+        {
+            false;
+        }
+    );
+    debug_assert_ne!(
+        {
+            true;
+        },
+        {
+            false;
+        }
+    );
+}