def test_decrypt_chr3(self):
"""key=3で復号化する"""
cci = CaesarCipher("abc", key=3)
crypted_txt = cci.encrypt()
plain_text = cci.decrypt(crypted_txt)
assert crypted_txt == "def"
assert plain_text == "abc"
def test_decrypt_chr25(self):
"""key=25で復号化する"""
cci = CaesarCipher("abc", key=25)
crypted_txt = cci.encrypt()
plain_text = cci.decrypt(crypted_txt)
assert crypted_txt == "zab"
assert plain_text == "abc"
def test_isinstance():
cci = CaesarCipher("aaa")
assert isinstance(cci, CaesarCipher)
def test_encrypt_chr100000(self):
"""平文をものすごく大きい数ずらす"""
cci = CaesarCipher("abc", key=100000)
expected = "efg"
assert cci.encrypt() == expected
def test_encrypt_chr26(self):
"""平文を26文字ずらすテスト"""
cci = CaesarCipher("abc", key=26)
expected = "abc"
assert cci.encrypt() == expected
def test_encrypt_chr25(self):
"""平文を25文字ずらすテスト"""
cci = CaesarCipher("abc", key=25)
expected = "zab"
assert cci.encrypt() == expected
def test_encrypt_chr24(self):
"""平文を24文字ずらすテスト"""
cci = CaesarCipher("abc", key=24)
expected = "yza"
assert cci.encrypt() == expected
def test_encrypt_chr3(self):
"""平文を3文字ずらすテスト"""
cci = CaesarCipher("abc")
expected = "def"
assert cci.encrypt() == expected
def test_check_no_input(capsys):
with pytest.raises(SystemExit) as excinfo:
cci = CaesarCipher("")
out, _ = capsys.readouterr()
assert out == "入力エラー。英字小文字a-zを入力してください\n"