🤷‍♀️ Expectations

What to expect(), when you're expecting!

There are a set of comparison functions defined in the types/as-pect.d.ts types definition. These comparison functions allow you to inspect object and memory state.

class Expectation<T> {
  constructor(public actual: T) {}
  not: Expectation<T>;
  // prototype methods follow
}

Expectations can be created like this:

// create an Expectation with typeof SomeValue`
expect(SomeValue);

Expectations can be negated like this:

// negate an assertion
expect(someValue).not.toBe(anotherValue);

// This assertion is effectively:
// I don't expect this value to be exactly this value

Calling the expect<T>(value: T) function outside of the following functions will result in unexpected behavior:

• beforeEach()

• afterEach()

• beforeAll()

• afterAll()

• test()

• it()

• throws()

• itThrows()

If this happens, the entire test suite will fail before it runs in the CLI, and the error description will be reported to the console.