def testConsumingReachesEof(self):
state = ScannerState("f")
state.consume()
eof = state.consume()
self.assertEqual(EOF, eof)
self.assertEqual(1, state.position)
def testCanConsume(self):
state = ScannerState("foo")
c = state.consume()
self.assertEqual('f', c)
self.assertEqual(1, state.position)
self.assertEqual(0, state.start)
def test_match_CanSucceed(self):
state = ScannerState('foo123')
state.consume()
state.consume()
state.consume()
self.assertTrue(state.match(r'\d{3}'))
self.assertEqual(6, state.position)
self.assertEqual(EOF, state.consume())
def testConsumingStopsAtEof(self):
state = ScannerState("f")
state.consume()
a = state.consume()
b = state.consume()
c = state.consume()
self.assertEqual([EOF, EOF, EOF], [a, b, c])
self.assertEqual(1, state.position)
self.assertEqual(0, state.start)
def test_expect_match_CanSucceed(self):
state = ScannerState('foo')
c = state.expect_match('fo{2}')
self.assertEqual('foo', c.group(0))
def test_expect_CanFail(self):
state = ScannerState('foo')
self.assertRaises(ValueError, state.expect, 'x')
def test_expect_CanSucceed(self):
state = ScannerState('foo')
c = state.expect('f')
self.assertEqual('f', c)
def test_ignore_Works(self):
state = ScannerState("aabb")
state.skip("a")
state.ignore()
self.assertEqual(2, state.position)
def testInstantiate(self):
state = ScannerState("foo")
self.assertEqual("foo", state.source)
self.assertEqual(0, state.position)
self.assertEqual(0, state.start)
def test_emit_Works(self):
state = ScannerState("aabb")
state.skip("a")
self.assertEqual('aa', state.emit())
self.assertEqual(2, state.position)
def test_skip_run_StopsAtEof(self):
state = ScannerState("aaf")
state.skip_run("af")
self.assertEqual(3, state.position)
self.assertEqual(EOF, state.consume())
def test_skip_run_Works(self):
state = ScannerState("aafoo")
state.skip_run("af")
self.assertEqual(3, state.position)
self.assertEqual('o', state.consume())
def test_skip_Works(self):
state = ScannerState("aafoo")
state.skip("a")
self.assertEqual(2, state.position)
self.assertEqual('f', state.consume())
def test_backup_Works(self):
state = ScannerState("foo")
state.consume()
state.consume()
state.backup()
def test_peek_CanFail(self):
state = ScannerState('foo')
self.assertFalse(state.peek('fxo'))
def test_peek_CanSucceed(self):
state = ScannerState('foo')
self.assertTrue(state.peek('foo'))
