From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/tools/clippy/tests/ui/unnecessary_join.rs | 37 +++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 src/tools/clippy/tests/ui/unnecessary_join.rs

(limited to 'src/tools/clippy/tests/ui/unnecessary_join.rs')

diff --git a/src/tools/clippy/tests/ui/unnecessary_join.rs b/src/tools/clippy/tests/ui/unnecessary_join.rs
new file mode 100644
index 000000000..0a21656a7
--- /dev/null
+++ b/src/tools/clippy/tests/ui/unnecessary_join.rs
@@ -0,0 +1,37 @@
+// 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::<Vec<String>>()
+        .join("");
+    println!("{}", output);
+
+    // should be linted
+    let vector = vec!["hello", "world"];
+    let output = vector
+        .iter()
+        .map(|item| item.to_uppercase())
+        .collect::<Vec<_>>()
+        .join("");
+    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);
+}
-- 
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