README
insta: a snapshot testing library for Rust
Introduction
Snapshots tests (also sometimes called approval tests) are tests that
assert values against a reference value (the snapshot). This is similar
to how assert_eq! lets you compare a value against a reference value but
unlike simple string assertions, snapshot tests let you test against complex
values and come with comprehensive tools to review changes.
Snapshot tests are particularly useful if your reference values are very large or change often.
Example
#[test]
fn test_hello_world() {
insta::assert_debug_snapshot!(vec![1, 2, 3]);
}