1 files changed, 133 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/write_with_newline.stderr b/src/tools/clippy/tests/ui/write_with_newline.stderr
new file mode 100644
index 000000000..5f55431be
--- /dev/null
+++ b/src/tools/clippy/tests/ui/write_with_newline.stderr
@@ -0,0 +1,133 @@
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:13:5
+   |
+LL |     write!(v, "Hello/n");
+   |     ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `-D clippy::write-with-newline` implied by `-D warnings`
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "Hello/n");
+LL +     writeln!(v, "Hello");
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:14:5
+   |
+LL |     write!(v, "Hello {}/n", "world");
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "Hello {}/n", "world");
+LL +     writeln!(v, "Hello {}", "world");
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:15:5
+   |
+LL |     write!(v, "Hello {} {}/n", "world", "#2");
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "Hello {} {}/n", "world", "#2");
+LL +     writeln!(v, "Hello {} {}", "world", "#2");
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:16:5
+   |
+LL |     write!(v, "{}/n", 1265);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "{}/n", 1265);
+LL +     writeln!(v, "{}", 1265);
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:17:5
+   |
+LL |     write!(v, "/n");
+   |     ^^^^^^^^^^^^^^^
+   |
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "/n");
+LL +     writeln!(v);
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:36:5
+   |
+LL |     write!(v, "//n"); // should fail
+   |     ^^^^^^^^^^^^^^^^^
+   |
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "//n"); // should fail
+LL +     writeln!(v, "/"); // should fail
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:43:5
+   |
+LL | /     write!(
+LL | |         v,
+LL | |         "
+LL | | "
+LL | |     );
+   | |_____^
+   |
+help: use `writeln!()` instead
+   |
+LL ~     writeln!(
+LL |         v,
+LL ~         ""
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:48:5
+   |
+LL | /     write!(
+LL | |         v,
+LL | |         r"
+LL | | "
+LL | |     );
+   | |_____^
+   |
+help: use `writeln!()` instead
+   |
+LL ~     writeln!(
+LL |         v,
+LL ~         r""
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:57:5
+   |
+LL |     write!(v, "/r/n"); //~ ERROR
+   |     ^^^^^^^^^^^^^^^^^^
+   |
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "/r/n"); //~ ERROR
+LL +     writeln!(v, "/r"); //~ ERROR
+   |
+
+error: using `write!()` with a format string that ends in a single newline
+  --> $DIR/write_with_newline.rs:58:5
+   |
+LL |     write!(v, "foo/rbar/n");
+   |     ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+help: use `writeln!()` instead
+   |
+LL -     write!(v, "foo/rbar/n");
+LL +     writeln!(v, "foo/rbar");
+   |
+
+error: aborting due to 10 previous errors
+