Struct AssertFormat

pub struct AssertFormat<'a> { /* private fields */ }

Functionality for testing Debug or Display implementations.

Implementations

impl<'a> AssertFormat<'a>

pub fn remaining_expected(&self) -> usize

Indicates how many of the expected bytes remain to be written for a success case.

pub fn assert_display_fmt<D>(instance: D, expected: &str)

where D: Display,

Asserts that the Display trait is correctly implemented.

Panics

This call panics if the output generated by the Display implementation differs from the expected value.

pub fn assert_debug_fmt<D>(instance: D, expected: &str)

where D: Debug,

Asserts that the Debug trait is correctly implemented.

Panics

This call panics if the output generated by the Debug implementation differs from the expected value.

Trait Implementations

impl<'a> Debug for AssertFormat<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Write for AssertFormat<'a>

fn write_str(&mut self, s: &str) -> Result

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result<(), Error>

Writes a char into this writer, returning whether the write succeeded.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Glue for usage of the write! macro with implementors of this trait.