[−][src]Macro cool_asserts::assert_matches
Assert that the value of an expression matches a given pattern.
This assertion checks that the value of an expression matches a pattern. It panics if the expression does not match.
Optionally, provide a block with => { <block> }
; the block will be run
with the matched pattern if the match was successful. This allows running
additional assertions on the matched pattern.
You can also add a trailing format message that will be included with
the panic in the event of an assertion failure, just like with
assert_eq!
.
Example
use cool_asserts::{assert_matches, assert_panics}; assert_panics!{ assert_matches!(Some(10), None), includes("value does not match pattern"), } assert_matches!(Some(10), Some(x) => { assert_eq!(x, 10); })