[−][src]Macro totems::assert_err
Asserts that a Result is Err
Parameters
&result
A reference to a result.&value
(optional) A reference to an item to compare toErr
's inner value.
Dependencies
- All content must implement Debug
value
must be comparable toErr
's inner type.
Examples
Check for Err
only:
use totems::assert_err; let result = "z".parse::<u32>(); assert_err!(&result);
Check for Err
and correct inner value:
use totems::assert_err; let result: Result<(), u32> = Err(5); assert_err!(&result, value == &5); assert_err!(&result, value != &0); assert_err!(&result, value < &6); assert_err!(&result, value <= &5); assert_err!(&result, value > &4); assert_err!(&result, value >= &5);
Example Error Messages
thread 'enums::err::is_err' panicked at 'assertion failed: (result is Err(_))
result: Ok(5)
', src/enums.rs:574:9
thread 'enums::err::eq_incorrect' panicked at 'assertion failed: (Err(left) => { left == right })
left: "This message matches."
right: "This message doesn\'t match."
', src/enums.rs:491:9