src/tools/clippy/tests/ui/missing_assert_message.rs

   1 #![allow(unused)]
   2 #![warn(clippy::missing_assert_message)]
   3
   4 macro_rules! bar {
   5     ($( $x:expr ),*) => {
   6         foo()
   7     };
   8 }
   9
  10 fn main() {}
  11
  12 // Should trigger warning
  13 fn asserts_without_message() {
  14     assert!(foo());
  15     assert_eq!(foo(), foo());
  16     assert_ne!(foo(), foo());
  17     debug_assert!(foo());
  18     debug_assert_eq!(foo(), foo());
  19     debug_assert_ne!(foo(), foo());
  20 }
  21
  22 // Should trigger warning
  23 fn asserts_without_message_but_with_macro_calls() {
  24     assert!(bar!(true));
  25     assert!(bar!(true, false));
  26     assert_eq!(bar!(true), foo());
  27     assert_ne!(bar!(true, true), bar!(true));
  28 }
  29
  30 // Should trigger warning
  31 fn asserts_with_trailing_commas() {
  32     assert!(foo(),);
  33     assert_eq!(foo(), foo(),);
  34     assert_ne!(foo(), foo(),);
  35     debug_assert!(foo(),);
  36     debug_assert_eq!(foo(), foo(),);
  37     debug_assert_ne!(foo(), foo(),);
  38 }
  39
  40 // Should not trigger warning
  41 fn asserts_with_message_and_with_macro_calls() {
  42     assert!(bar!(true), "msg");
  43     assert!(bar!(true, false), "msg");
  44     assert_eq!(bar!(true), foo(), "msg");
  45     assert_ne!(bar!(true, true), bar!(true), "msg");
  46 }
  47
  48 // Should not trigger warning
  49 fn asserts_with_message() {
  50     assert!(foo(), "msg");
  51     assert_eq!(foo(), foo(), "msg");
  52     assert_ne!(foo(), foo(), "msg");
  53     debug_assert!(foo(), "msg");
  54     debug_assert_eq!(foo(), foo(), "msg");
  55     debug_assert_ne!(foo(), foo(), "msg");
  56 }
  57
  58 // Should not trigger warning
  59 #[test]
  60 fn asserts_without_message_but_inside_a_test_function() {
  61     assert!(foo());
  62     assert_eq!(foo(), foo());
  63     assert_ne!(foo(), foo());
  64     debug_assert!(foo());
  65     debug_assert_eq!(foo(), foo());
  66     debug_assert_ne!(foo(), foo());
  67 }
  68
  69 // Should not trigger warning
  70 #[cfg(test)]
  71 mod tests {
  72     fn asserts_without_message_but_inside_a_test_module() {
  73         assert!(foo());
  74         assert_eq!(foo(), foo());
  75         assert_ne!(foo(), foo());
  76         debug_assert!(foo());
  77         debug_assert_eq!(foo(), foo());
  78         debug_assert_ne!(foo(), foo());
  79     }
  80 }
  81
  82 fn foo() -> bool {
  83     true
  84 }