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// Copyright 2022 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
use crate::{
description::Description,
matcher::{Matcher, MatcherBase, MatcherResult},
};
use std::fmt::Debug;
/// Matches anything. This matcher always succeeds.
///
/// This is useful to check if `actual` matches the specific structure (like
/// `Some(...)`) but without caring about the internal value.
///
/// ```
/// # use googletest::prelude::*;
/// # fn should_pass() -> Result<()> {
/// let option = Some("Some value");
/// verify_that!(option, some(anything()))?;
/// # Ok(())
/// # }
/// # should_pass().unwrap();
/// ```
pub fn anything() -> Anything {
Anything
}
#[derive(MatcherBase)]
pub struct Anything;
impl<T: Debug + Copy> Matcher<T> for Anything {
fn matches(&self, _: T) -> MatcherResult {
MatcherResult::Match
}
fn describe(&self, matcher_result: MatcherResult) -> Description {
match matcher_result {
MatcherResult::Match => "is anything".into(),
MatcherResult::NoMatch => "never matches".into(),
}
}
}
#[cfg(test)]
mod tests {
use crate::prelude::*;
use crate::Result;
#[test]
fn anything_matches_i32() -> Result<()> {
let value = 32;
verify_that!(value, anything())?;
Ok(())
}
#[test]
fn anything_matches_str() -> Result<()> {
let value = "32";
verify_that!(value, anything())?;
Ok(())
}
#[test]
fn anything_matches_option() -> Result<()> {
let value = Some(32);
verify_that!(value, some(anything()))?;
Ok(())
}
}