def test_bad_type(self):
"""Test non string arguments."""
with self.assertRaises(TypeError):
self.assertFalse(ishex(0xff))
with self.assertRaises(TypeError):
self.assertFalse(ishex(True))
def test_hex_literal(self):
"""Test hex literal. It uses non-hex char - 'x'."""
self.assertFalse(ishex('0xff'))
def test_empty(self):
"""Test empty string."""
self.assertTrue(ishex(''))
def test_failing(self):
"""Test non-hexes."""
self.assertFalse(ishex('g'))
self.assertFalse(ishex('5x'))
def test_good(self):
"""Test actual hexes."""
self.assertTrue(ishex('1'))
self.assertTrue(ishex('a'))
self.assertTrue(ishex('5b'))
self.assertTrue(ishex('1234567890abcdef'))