616af6eb83
The test harness will make sure that the panic message contains the
specified string. This is useful to help make `#[should_fail]` tests a
bit less brittle by decreasing the chance that the test isn't
"accidentally" passing due to a panic occurring earlier than expected.
The behavior is in some ways similar to JUnit's `expected` feature:
`@Test(expected=NullPointerException.class)`.
Without the message assertion, this test would pass even though it's not
actually reaching the intended part of the code:
```rust
#[test]
#[should_fail(message = "out of bounds")]
fn test_oob_array_access() {
let idx: uint = from_str("13o").unwrap(); // oops, this will panic
[1i32, 2, 3][idx];
}
```
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| .. | ||
| auxiliary | ||
| bench | ||
| codegen | ||
| compile-fail | ||
| compile-fail-fulldeps | ||
| debuginfo | ||
| pretty | ||
| run-fail | ||
| run-make | ||
| run-pass | ||
| run-pass-fulldeps | ||
| run-pass-valgrind | ||