Function loggy::assert_panics

pub fn assert_panics<Code: FnOnce() -> Result, Result>(
    expected_panic: &str,
    code: Code
)

Ensure that executing some code will panic with a specific error message (ignoring the log).

TODO: This crate isn’t really the best place for this.

Unlike #[should_panic(expected = "...")], this:

• Allows isolating a specific part of the test instead of decorating a whole test;
• Does not pollute stderr with the panic indication and back trace;
• Allows the caller to dynamically generate the expected panic message;
• Insists on the exact panic string rather than just a sub-string if it.

Notes

The rust log facade mandates using a single global logger. Therefore, only one test can capture the log at any given time, using a global Mutex. Therefore, nesting this inside itself, assert_logs or assert_logs_panics will deadlock.

Panics

If the code does not panic, or panics with a different message than expected.