assertEven method

void assertEven({
  1. String? message,
})

Asserts that this number is even.

Throws a test failure if this number is not even.

Example:

2.assertEven();  // Passes
4.assertEven();  // Passes
0.assertEven();  // Passes
3.assertEven();  // Fails
  • message: Optional custom message for the failure reason.

Implementation

void assertEven({String? message}) {
  expect(this % 2 == 0, isTrue,
      reason: message ?? 'Expected $this to be even');
}