This plugin afford math related expectations.
expect(8)->toBeDivisibleBy(4);
expect(8)->not->toBeDivisibleBy(3);
expect(4096)->toBePowerOf(8);
expect(128)->not->toBePowerOf(3);
expect(6)->toBeMaxOf([-6, 0, 6]);
expect(5.5)->not->toBeMaxOf([2, 4.2, 5.5, 6]);
expect(-6)->toBeMinOf([-6, 0, 1]);
expect(5.5)->not->toBeMinOf([2, 4.2, 5.5, 6]);
expect(6)->toBeEven();
expect(7)->not->toBeEven();
expect(7)->toBeOdd();
expect(6)->not->toBeOdd();
expect(3)->toBePrime();
expect(6)->not->toBePrime();
expect(1)->toBePositive();
expect(-2)->not->toBePositive();
expect(-1)->toBeNegative();
expect(2)->not->toBeNegative();
expect(3)->toBeSqrtOf(9);
expect(3.16)->toBeSqrtOf(10, 2);
expect(2)->not->toBeSqrtOf(9);
expect(6)->toBeFactorialOf(3);
expect(4)->not->toBeFactorialOf(2);
expect(3)->toBeAbsoluteOf(-3);
expect(-3)->not->toBeAbsoluteOf(-3);
Base default is euler's number.
expect(0.69897000433602)->toBeLogarithmOf(number: 5, base: 10);
expect(1)->not->toBeLogarithmOf(number: 1);