1 files changed, 35 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/unnecessary_join.fixed b/src/tools/clippy/tests/ui/unnecessary_join.fixed
new file mode 100644
index 000000000..7e12c6ae4
--- /dev/null
+++ b/src/tools/clippy/tests/ui/unnecessary_join.fixed
@@ -0,0 +1,35 @@
+// run-rustfix
+
+#![warn(clippy::unnecessary_join)]
+
+fn main() {
+    // should be linted
+    let vector = vec!["hello", "world"];
+    let output = vector
+        .iter()
+        .map(|item| item.to_uppercase())
+        .collect::<String>();
+    println!("{}", output);
+
+    // should be linted
+    let vector = vec!["hello", "world"];
+    let output = vector
+        .iter()
+        .map(|item| item.to_uppercase())
+        .collect::<String>();
+    println!("{}", output);
+
+    // should not be linted
+    let vector = vec!["hello", "world"];
+    let output = vector
+        .iter()
+        .map(|item| item.to_uppercase())
+        .collect::<Vec<String>>()
+        .join("\n");
+    println!("{}", output);
+
+    // should not be linted
+    let vector = vec!["hello", "world"];
+    let output = vector.iter().map(|item| item.to_uppercase()).collect::<String>();
+    println!("{}", output);
+}