1 files changed, 129 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/bool_comparison.rs b/src/tools/clippy/tests/ui/bool_comparison.rs
new file mode 100644
index 00000000000..01ee35859f0
--- /dev/null
+++ b/src/tools/clippy/tests/ui/bool_comparison.rs
@@ -0,0 +1,129 @@
+// run-rustfix
+
+#[warn(clippy::bool_comparison)]
+fn main() {
+    let x = true;
+    if x == true {
+        "yes"
+    } else {
+        "no"
+    };
+    if x == false {
+        "yes"
+    } else {
+        "no"
+    };
+    if true == x {
+        "yes"
+    } else {
+        "no"
+    };
+    if false == x {
+        "yes"
+    } else {
+        "no"
+    };
+    if x != true {
+        "yes"
+    } else {
+        "no"
+    };
+    if x != false {
+        "yes"
+    } else {
+        "no"
+    };
+    if true != x {
+        "yes"
+    } else {
+        "no"
+    };
+    if false != x {
+        "yes"
+    } else {
+        "no"
+    };
+    if x < true {
+        "yes"
+    } else {
+        "no"
+    };
+    if false < x {
+        "yes"
+    } else {
+        "no"
+    };
+    if x > false {
+        "yes"
+    } else {
+        "no"
+    };
+    if true > x {
+        "yes"
+    } else {
+        "no"
+    };
+    let y = true;
+    if x < y {
+        "yes"
+    } else {
+        "no"
+    };
+    if x > y {
+        "yes"
+    } else {
+        "no"
+    };
+}
+
+#[allow(dead_code)]
+fn issue3703() {
+    struct Foo;
+    impl PartialEq<bool> for Foo {
+        fn eq(&self, _: &bool) -> bool {
+            true
+        }
+    }
+    impl PartialEq<Foo> for bool {
+        fn eq(&self, _: &Foo) -> bool {
+            true
+        }
+    }
+    impl PartialOrd<bool> for Foo {
+        fn partial_cmp(&self, _: &bool) -> Option<std::cmp::Ordering> {
+            None
+        }
+    }
+    impl PartialOrd<Foo> for bool {
+        fn partial_cmp(&self, _: &Foo) -> Option<std::cmp::Ordering> {
+            None
+        }
+    }
+
+    if Foo == true {}
+    if true == Foo {}
+    if Foo != true {}
+    if true != Foo {}
+    if Foo == false {}
+    if false == Foo {}
+    if Foo != false {}
+    if false != Foo {}
+    if Foo < false {}
+    if false < Foo {}
+}
+
+#[allow(dead_code)]
+fn issue4983() {
+    let a = true;
+    let b = false;
+
+    if a == !b {};
+    if !a == b {};
+    if a == b {};
+    if !a == !b {};
+
+    if b == !a {};
+    if !b == a {};
+    if b == a {};
+    if !b == !a {};
+}