1 files changed, 66 insertions, 0 deletions
diff --git a/vendor/derivative/tests/derive-clone.rs b/vendor/derivative/tests/derive-clone.rs
new file mode 100755
index 000000000..9120d3ee3
--- /dev/null
+++ b/vendor/derivative/tests/derive-clone.rs
@@ -0,0 +1,66 @@
+#![allow(clippy::blacklisted_name, clippy::redundant_clone, clippy::trivially_copy_pass_by_ref)]
+
+#[cfg(feature = "use_core")]
+extern crate core;
+
+#[macro_use]
+extern crate derivative;
+
+#[derive(Debug, Derivative, PartialEq)]
+#[derivative(Clone)]
+struct Foo {
+    foo: u8,
+    #[derivative(Clone(clone_with="seventh"))]
+    bar: u8,
+}
+
+fn seventh(a: &u8) -> u8 {
+    a/7
+}
+
+#[derive(Debug, PartialEq)]
+struct EvilCloneFrom(u8);
+
+impl Clone for EvilCloneFrom {
+    fn clone(&self) -> Self {
+        EvilCloneFrom(self.0)
+    }
+
+    fn clone_from(&mut self, _: &Self) {
+        self.0 = 42;
+    }
+}
+
+#[derive(Derivative)]
+#[derivative(Clone(clone_from="true"))]
+struct StructWithCloneFrom(EvilCloneFrom);
+
+#[derive(Debug, Derivative, PartialEq)]
+#[derivative(Clone(clone_from="true"))]
+enum EnumWithCloneFrom {
+    Evil(EvilCloneFrom),
+    Good(u32),
+    None
+}
+
+#[test]
+fn main() {
+    let foo = Foo { foo: 31, bar: 42 };
+    assert_eq!(Foo { foo: 31, bar: 6 }, foo.clone());
+
+    let mut foo = StructWithCloneFrom(EvilCloneFrom(27));
+    foo.clone_from(&StructWithCloneFrom(EvilCloneFrom(0)));
+    assert_eq!((foo.0).0, 42);
+
+    let mut foo = EnumWithCloneFrom::Evil(EvilCloneFrom(27));
+    foo.clone_from(&EnumWithCloneFrom::Evil(EvilCloneFrom(0)));
+    assert_eq!(foo, EnumWithCloneFrom::Evil(EvilCloneFrom(42)));
+
+    let mut foo = EnumWithCloneFrom::Evil(EvilCloneFrom(27));
+    foo.clone_from(&EnumWithCloneFrom::None);
+    assert_eq!(foo, EnumWithCloneFrom::None);
+
+    let mut foo = EnumWithCloneFrom::Good(27);
+    foo.clone_from(&EnumWithCloneFrom::None);
+    assert_eq!(foo, EnumWithCloneFrom::None);
+}