From b76e0426a115310c454d1846d53b4d263180065c Mon Sep 17 00:00:00 2001
From: Guillaume Gomez <guillaume1.gomez@gmail.com>
Date: Tue, 31 Dec 2024 00:47:11 +0100
Subject: [PATCH] Add regression test for `useless_vec` with code comments

---
 tests/ui/useless_vec.rs     | 15 +++++++++++++++
 tests/ui/useless_vec.stderr | 21 +++++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 tests/ui/useless_vec.rs
 create mode 100644 tests/ui/useless_vec.stderr

diff --git a/tests/ui/useless_vec.rs b/tests/ui/useless_vec.rs
new file mode 100644
index 0000000000000..880809f81d7ae
--- /dev/null
+++ b/tests/ui/useless_vec.rs
@@ -0,0 +1,15 @@
+//@no-rustfix: no suggestions
+
+#![warn(clippy::useless_vec)]
+
+// Regression test for <https://github.com/rust-lang/rust-clippy/issues/13692>.
+fn foo() {
+    // There should be no suggestion in this case.
+    let _some_variable = vec![
+        //~^ useless_vec
+        1, 2, // i'm here to stay
+        3, 4, // but this one going away ;-;
+    ]; // that is life anyways
+}
+
+fn main() {}
diff --git a/tests/ui/useless_vec.stderr b/tests/ui/useless_vec.stderr
new file mode 100644
index 0000000000000..e47364fb06d3b
--- /dev/null
+++ b/tests/ui/useless_vec.stderr
@@ -0,0 +1,21 @@
+error: useless use of `vec!`
+  --> tests/ui/useless_vec.rs:8:26
+   |
+LL |       let _some_variable = vec![
+   |  __________________________^
+LL | |
+LL | |         1, 2, // i'm here to stay
+LL | |         3, 4, // but this one going away ;-;
+LL | |     ]; // that is life anyways
+   | |_____^
+   |
+   = note: `-D clippy::useless-vec` implied by `-D warnings`
+   = help: to override `-D warnings` add `#[allow(clippy::useless_vec)]`
+help: you can use an array directly
+   |
+LL ~     let _some_variable = [1, 2, // i'm here to stay
+LL ~         3, 4]; // that is life anyways
+   |
+
+error: aborting due to 1 previous error
+