Melhorar os testes do método parse do CNPJ (#107)

brutils/cnpj.py

@@ -17,12 +17,7 @@ def sieve(dirty):  # type: (str) -> str
 
 
 def parse(dirty):  # type: (str) -> str
-    """
-    Filters out CNPJ formatting symbols. Symbols that are not used
-    in the CNPJ formatting are left unfiltered on purpose so that
-    if fails other tests, because their presence indicate that the
-    input was somehow corrupted.
-    """
+    """Alias to the function `sieve`. Better naming."""
     return sieve(dirty)
 
 

tests/test_cnpj.py

@@ -2,6 +2,7 @@
 from os.path import abspath, join, dirname
 from sys import path, version_info, dont_write_bytecode
 from inspect import getsourcefile
+from unittest.mock import patch
 
 dont_write_bytecode = True
 range = range if version_info.major >= 3 else xrange
@@ -32,12 +33,10 @@ def test_sieve(self):
         assert sieve("/...---.../") == ""
 
     def test_parse(self):
-        assert parse("00000000000") == "00000000000"
-        assert parse("12.345.678/0001-90") == "12345678000190"
-        assert parse("134..2435/.-1892.-") == "13424351892"
-        assert parse("abc1230916*!*&#") == "abc1230916*!*&#"
-        assert parse("ab.c1.--.2-3/09.-1-./6/-.*.-!*&#") == "abc1230916*!*&#"
-        assert parse("/...---.../") == ""
+        with patch("brutils.cnpj.sieve") as mock_sieve:
+            # When call parse, it calls sieve
+            parse("12.345.678/0001-90")
+            mock_sieve.assert_called()
 
     def test_display(self):
         assert display("00000000000109") == "00.000.000/0001-09"