1 files changed, 30 insertions, 0 deletions
diff --git a/vendor/derive_builder/tests/run-pass/custom_types.rs b/vendor/derive_builder/tests/run-pass/custom_types.rs
new file mode 100644
index 000000000..2b4f999e2
--- /dev/null
+++ b/vendor/derive_builder/tests/run-pass/custom_types.rs
@@ -0,0 +1,30 @@
+#![allow(dead_code)]
+
+#[macro_use]
+extern crate derive_builder;
+
+struct Unit;
+
+type Clone = Unit;
+type Into = Unit;
+type Option = Unit;
+type Result = Unit;
+type Some = Unit;
+type String = Unit;
+
+impl core::fmt::Debug for Unit {
+    fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
+        write!(f, "()")
+    }
+}
+
+impl core::fmt::Display for Unit {
+    fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
+        write!(f, "()")
+    }
+}
+
+#[derive(Builder)]
+struct IgnoreEmptyStruct {}
+
+fn main() { }