diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/comparison_to_empty.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/comparison_to_empty.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/comparison_to_empty.rs b/src/tools/clippy/tests/ui/comparison_to_empty.rs new file mode 100644 index 000000000..98ddd9749 --- /dev/null +++ b/src/tools/clippy/tests/ui/comparison_to_empty.rs @@ -0,0 +1,23 @@ +// run-rustfix + +#![warn(clippy::comparison_to_empty)] + +fn main() { + // Disallow comparisons to empty + let s = String::new(); + let _ = s == ""; + let _ = s != ""; + + let v = vec![0]; + let _ = v == []; + let _ = v != []; + + // Allow comparisons to non-empty + let s = String::new(); + let _ = s == " "; + let _ = s != " "; + + let v = vec![0]; + let _ = v == [0]; + let _ = v != [0]; +} |