1 files changed, 20 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/writeln_empty_string.fixed b/src/tools/clippy/tests/ui/writeln_empty_string.fixed
new file mode 100644
index 000000000..e7d94acd1
--- /dev/null
+++ b/src/tools/clippy/tests/ui/writeln_empty_string.fixed
@@ -0,0 +1,20 @@
+// run-rustfix
+
+#![allow(unused_must_use)]
+#![warn(clippy::writeln_empty_string)]
+use std::io::Write;
+
+fn main() {
+    let mut v = Vec::new();
+
+    // These should fail
+    writeln!(v);
+
+    let mut suggestion = Vec::new();
+    writeln!(suggestion);
+
+    // These should be fine
+    writeln!(v);
+    writeln!(v, " ");
+    write!(v, "");
+}