`std/test/lib`

std/test/src/lib.trb

Tests are ordinary function calls in the .test.trb files of tests:

group "Vector2" {
  test "adds component-wise" {
    assert(Vector2(1.0, 2.0) + Vector2(3.0, 4.0) == Vector2(4.0, 6.0))
  }
}

There are no matchers. assert takes an Expression<Bool>, so a failure shows the source and the values. A test fails if it panics; the test runner catches that per test.

fn test

native fn test(name: String, body: () => Void)

Names a closure whose body is the check. Fails if the body panics; the test runner catches that per test.

fn group

native fn group(name: String, body: () => Void)

Names a closure of test calls. Groups nest freely - a group inside a group is how a suite is organized.