1 files changed, 52 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/print_with_newline.rs b/src/tools/clippy/tests/ui/print_with_newline.rs
new file mode 100644
index 000000000..a43a1fc4f
--- /dev/null
+++ b/src/tools/clippy/tests/ui/print_with_newline.rs
@@ -0,0 +1,52 @@
+// FIXME: Ideally these suggestions would be fixed via rustfix. Blocked by rust-lang/rust#53934
+// // run-rustfix
+
+#![allow(clippy::print_literal)]
+#![warn(clippy::print_with_newline)]
+
+fn main() {
+    print!("Hello\n");
+    print!("Hello {}\n", "world");
+    print!("Hello {} {}\n", "world", "#2");
+    print!("{}\n", 1265);
+    print!("\n");
+
+    // these are all fine
+    print!("");
+    print!("Hello");
+    println!("Hello");
+    println!("Hello\n");
+    println!("Hello {}\n", "world");
+    print!("Issue\n{}", 1265);
+    print!("{}", 1265);
+    print!("\n{}", 1275);
+    print!("\n\n");
+    print!("like eof\n\n");
+    print!("Hello {} {}\n\n", "world", "#2");
+    println!("\ndon't\nwarn\nfor\nmultiple\nnewlines\n"); // #3126
+    println!("\nbla\n\n"); // #3126
+
+    // Escaping
+    print!("\\n"); // #3514
+    print!("\\\n"); // should fail
+    print!("\\\\n");
+
+    // Raw strings
+    print!(r"\n"); // #3778
+
+    // Literal newlines should also fail
+    print!(
+        "
+"
+    );
+    print!(
+        r"
+"
+    );
+
+    // Don't warn on CRLF (#4208)
+    print!("\r\n");
+    print!("foo\r\n");
+    print!("\\r\n"); //~ ERROR
+    print!("foo\rbar\n") // ~ ERROR
+}