1 files changed, 40 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/target/configs/merge_derives/true.rs b/src/tools/rustfmt/tests/target/configs/merge_derives/true.rs
new file mode 100644
index 000000000..4d0148b1c
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/configs/merge_derives/true.rs
@@ -0,0 +1,40 @@
+// rustfmt-merge_derives: true
+// Merge multiple derives to a single one.
+
+#[bar]
+#[derive(Eq, PartialEq)]
+#[foo]
+#[derive(Debug)]
+#[foobar]
+#[derive(Copy, Clone)]
+pub enum Foo {}
+
+#[derive(Eq, PartialEq, Debug)]
+#[foobar]
+#[derive(Copy, Clone)]
+pub enum Bar {}
+
+#[derive(Eq, PartialEq, Debug, Copy, Clone)]
+pub enum FooBar {}
+
+mod foo {
+    #[bar]
+    #[derive(Eq, PartialEq)]
+    #[foo]
+    #[derive(Debug)]
+    #[foobar]
+    #[derive(Copy, Clone)]
+    pub enum Foo {}
+}
+
+mod bar {
+    #[derive(Eq, PartialEq, Debug)]
+    #[foobar]
+    #[derive(Copy, Clone)]
+    pub enum Bar {}
+}
+
+mod foobar {
+    #[derive(Eq, PartialEq, Debug, Copy, Clone)]
+    pub enum FooBar {}
+}