1 files changed, 7 insertions, 0 deletions
diff --git a/tests/ui/unused-crate-deps/deny-cmdline-json.rs b/tests/ui/unused-crate-deps/deny-cmdline-json.rs
new file mode 100644
index 000000000..2b369dee5
--- /dev/null
+++ b/tests/ui/unused-crate-deps/deny-cmdline-json.rs
@@ -0,0 +1,7 @@
+// Check for unused crate dep, json event, deny, expect compile failure
+
+// edition:2018
+// compile-flags: -Dunused-crate-dependencies  -Zunstable-options --json unused-externs --error-format=json
+// aux-crate:bar=bar.rs
+
+fn main() {}