1 files changed, 54 insertions, 0 deletions
diff --git a/src/test/ui/deriving/deriving-show-2.rs b/src/test/ui/deriving/deriving-show-2.rs
new file mode 100644
index 000000000..13d124ed4
--- /dev/null
+++ b/src/test/ui/deriving/deriving-show-2.rs
@@ -0,0 +1,54 @@
+// run-pass
+#![allow(dead_code)]
+use std::fmt;
+
+#[derive(Debug)]
+enum A {}
+#[derive(Debug)]
+enum B { B1, B2, B3 }
+#[derive(Debug)]
+enum C { C1(isize), C2(B), C3(String) }
+#[derive(Debug)]
+enum D { D1{ a: isize } }
+#[derive(Debug)]
+struct E;
+#[derive(Debug)]
+struct F(isize);
+#[derive(Debug)]
+struct G(isize, isize);
+#[derive(Debug)]
+struct H { a: isize }
+#[derive(Debug)]
+struct I { a: isize, b: isize }
+#[derive(Debug)]
+struct J(Custom);
+
+struct Custom;
+impl fmt::Debug for Custom {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "yay")
+    }
+}
+
+trait ToDebug {
+    fn to_show(&self) -> String;
+}
+
+impl<T: fmt::Debug> ToDebug for T {
+    fn to_show(&self) -> String {
+        format!("{:?}", self)
+    }
+}
+
+pub fn main() {
+    assert_eq!(B::B1.to_show(), "B1".to_string());
+    assert_eq!(B::B2.to_show(), "B2".to_string());
+    assert_eq!(C::C1(3).to_show(), "C1(3)".to_string());
+    assert_eq!(C::C2(B::B2).to_show(), "C2(B2)".to_string());
+    assert_eq!(D::D1{ a: 2 }.to_show(), "D1 { a: 2 }".to_string());
+    assert_eq!(E.to_show(), "E".to_string());
+    assert_eq!(F(3).to_show(), "F(3)".to_string());
+    assert_eq!(G(3, 4).to_show(), "G(3, 4)".to_string());
+    assert_eq!(I{ a: 2, b: 4 }.to_show(), "I { a: 2, b: 4 }".to_string());
+    assert_eq!(J(Custom).to_show(), "J(yay)".to_string());
+}