def test_parse(self):
ex = Expression()
self.assertEqual(ex.parse("a"), (["sequence" ,["literal", ["button", "a"]]], ""))
self.assertEqual(ex.parse("ab"), (["sequence" ,["literal", ["button", "a"]],
["sequence", ["literal", ["button", "b"]]]], ""))
self.assertEqual(ex.parse("a*b"), (["sequence" ,["literal", ["button", "a"]],
["sequence", ["literal", ["wild", "*"]],
["sequence", ["literal", ["button", "b"]]]]], ""))
self.assertEqual(ex.parse("<Enter>a"), (["sequence" ,["literal", ["button", "<Enter>"]],
["sequence", ["literal", ["button", "a"]]]], ""))
def test_compile(self):
ex = Expression()
btn_a = ex.button(30)
btn_b = ex.button(48)
btn_enter = ex.button(28)
btn_wild = ex.wild(28)
key = lambda code, state: KeyEvent(InputEvent(0, 0, 0, code, state))
keys = [key(code,state) for code in [28,30,46,48] for state in [0,1,2]]
keysets = [list(i) for i in permutations(keys, 3)]
matches = {
"a": btn_a,
"<Enter>": btn_enter,
"ab": ex.sequence(btn_a, btn_b),
"a*b": ex.sequence(btn_a, ex.sequence(btn_wild, btn_b))
}
for line, expected in matches.items():
result_expected = map(expected, keysets)
result_actual = map(ex.compile(ex.parse(line)[0]), keysets)
data = [(e, a, keysets[i], ex.parse(line))\
for i, (a, e) in enumerate(zip(result_actual, result_expected))\
if a[0] != e[0] or a[2] != e[2]
]
self.assertEquals(data, [])
