1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/removing-extern-crate.rs b/tests/ui/removing-extern-crate.rs
new file mode 100644
index 000000000..465e1360c
--- /dev/null
+++ b/tests/ui/removing-extern-crate.rs
@@ -0,0 +1,16 @@
+// edition:2018
+// aux-build:removing-extern-crate.rs
+// run-rustfix
+// check-pass
+
+#![warn(rust_2018_idioms)]
+
+extern crate removing_extern_crate as foo; //~ WARNING unused extern crate
+extern crate core; //~ WARNING unused extern crate
+
+mod another {
+    extern crate removing_extern_crate as foo; //~ WARNING unused extern crate
+    extern crate core; //~ WARNING unused extern crate
+}
+
+fn main() {}