Assertor
========
Assertor makes test assertions and failure messages more human-readable.
[](https://crates.io/crates/assertor)
[](https://github.com/google/assertor/LICENSE)
[](https://docs.rs/crate/assertor/)
Assertor is heavily affected by [Java Truth](https://github.com/google/truth) in terms of API design and error messages,
but this is a totally different project from Java Truth.
### Disclaimer
This is not an official Google product, it is just code that happens to be owned by Google.
⚠ The API is not fully stable and may be changed until version 1.0.
Example
-------
```rust
use assertor::*;
#[test]
fn test_it() {
assert_that!("foobarbaz").contains("bar");
assert_that!("foobarbaz").ends_with("baz");
assert_that!(0.5).with_abs_tol(0.2).is_approx_equal_to(0.6);
assert_that!(vec!["a", "b"]).contains("a");
assert_that!(vec!["a", "b"]).has_length(2);
assert_that!(vec!["a", "b"]).contains_exactly(vec!["a", "b"]);
assert_that!(Option::Some("Foo")).has_value("Foo");
}
```
### Failure cases
```rust
use assertor::*;
fn test_it() {
assert_that!(vec!["a", "b", "c"]).contains_exactly(vec!["b", "c", "d"]);
// missing (1) : ["d"]
// unexpected (1): ["a"]
// ---
// expected : ["b", "c", "d"]
// actual : ["a", "b", "c"]
}
```
## Feature ideas
- [ ] Color / Bold
- [ ] Better diff: vec
- [ ] Better diff: set
- [ ] Better diff: HashMap