# to be infinite

- <number> [not] to be infinite

Asserts that a number is infinite.

expect(Infinity, 'to be infinite');expect(-Infinity, 'to be infinite');

In case of a failing expectation you get the following output:

expect(123, 'to be infinite');

expected 123 to be infinite

This assertion can be negated using the `not`

flag:

expect(123, 'not to be infinite');

In case of a failing expectation you get the following output:

expect(Infinity, 'not to be infinite');

expected Infinity not to be infinite