Method assertIsNaN

Lib/test/test_math.py:2465–2467

(self, value)

    # Custom assertions.

    def assertIsNaN(self, value):
        if not math.isnan(value):
            self.fail("Expected a NaN, got {!r}.".format(value))

    def assertEqualSign(self, x, y):
        """Similar to assertEqual(), but compare also the sign with copysign().