Types And Truthiness

These matchers are useful when the exact value matters less than the kind of value.

Type Matchers

expect(label).toBeString();
expect(flag).toBeBoolean();
expect(items).toBeArray();

Available methods:

• toBeString()
• toBeBoolean()
• toBeArray()

Truthiness

expect(result).toBeTruthy();
expect(optionalValue).toBeFalsy();

Available methods:

• toBeTruthy()
• toBeFalsy()

Truthiness follows the runtime helper behavior:

• false is falsy
• empty strings are falsy
• 0 and 0.0 are falsy
• NaN is falsy
• null is falsy
• other managed values are truthy