def test_copy(self):
e1 = EventExpression('request', ['path', 'elapsed_ms'])
e2 = e1.copy()
self.assertEqual(e1, e2)
e1 = e1.eq('path', '/')
e3 = e1.copy()
self.assertNotEqual(e1, e2)
self.assertEqual(e1, e3)
self.assertNotEqual(e2, e3)
def test_filter_chaining(self):
e = EventExpression('test')
e = e.eq('bar', 'baz')
self.assertTrue(isinstance(e, EventExpression))
self.assertEqual(len(e.filters), 1)
e = e.lt('fizz', 'bang')
self.assertTrue(isinstance(e, EventExpression))
self.assertEqual(len(e.filters), 2)
e = e.ge('foo', 4)
self.assertTrue(isinstance(e, EventExpression))
self.assertEqual(len(e.filters), 3)
self.assertEqual("%s" % e,
'test.eq(bar, "baz").lt(fizz, "bang").ge(foo, 4)')
