Module assert

Traits

Unwrappable

A trait that can be R, Result<R>, Option<R>, Result<Option<R>>, or Option<Result<R>> and can unwrap to return R.

Functions

borrowed

Asserts that the value implements Cow and is borrowed. This is useful for testing that a Cow is not cloned.

cursor_completely_consumed

Asserts cursor position has reached the end. This is useful for testing that a cursor has been completely consumed.

default

Asserts that the value is default.

equal

Asserts two values are equal using PartialEq, allowing for different types to be compared. Automatically unwraps Result and Option, failing the test if the value is Err or None. This is useful for removing boilerplate .unwrap().unwrap() calls in tests.

equal_bytes

More specific than assert::equal, must be for AsRef<u8>. On failure, the output message will show the hex values of the bytes for easier debugging of longer byte arrays.

equal_file_contents

Asserts that the value is equal to the contents of the file. Works for anything that implements AsRef<u8>. This is useful for testing against large fixtures. The file is read into memory and compared against the value.

equal_hex_bytes

More specific than assert::equal, must be for AsRef<u8>.

err

Assert that the value is err.

err_into

Asserts that the value is err and returns the value.

none

Assert that the value is none.

not_equal

Asserts two values are not equal using PartialEq, allowing for different types to be compared. Automatically unwraps Result and Option, failing the test if the value is Err or None. This is useful for removing boilerplate .unwrap().unwrap() calls in tests.

ok

Assert that the value is ok.

ok_into

Asserts that the value is ok and returns the value.

owned

Asserts that the value implements Cow and is owned. This is useful for testing that a Cow is cloned.

ref_equal

Assert that they share the same AsRef somewhere.

some

Assert that the value is some.

some_into

Asserts that the value is some and returns the value.