contemplate monkey patching and with statements

programmer-ke · programmer-ke · commit cb87dfcc360d · 2021-09-18T17:35:51.000+03:00
diff --git a/koans/about_monkey_patching.py b/koans/about_monkey_patching.py
@@ -14,7 +14,7 @@ def bark(self):
 
     def test_as_defined_dogs_do_bark(self):
         fido = self.Dog()
-        self.assertEqual(__, fido.bark())
+        self.assertEqual("WOOF", fido.bark())
 
     # ------------------------------------------------------------------
 
@@ -24,8 +24,8 @@ def wag(self): return "HAPPY"
         self.Dog.wag = wag
 
         fido = self.Dog()
-        self.assertEqual(__, fido.wag())
-        self.assertEqual(__, fido.bark())
+        self.assertEqual("HAPPY", fido.wag())
+        self.assertEqual("WOOF", fido.bark())
 
     # ------------------------------------------------------------------
 
@@ -35,7 +35,7 @@ def test_most_built_in_classes_cannot_be_monkey_patched(self):
         except Exception as ex:
             err_msg = ex.args[0]
 
-        self.assertRegex(err_msg, __)
+        self.assertRegex(err_msg, "can't set attributes of built-in")
 
     # ------------------------------------------------------------------
 
@@ -44,5 +44,5 @@ class MyInt(int): pass
     def test_subclasses_of_built_in_classes_can_be_be_monkey_patched(self):
         self.MyInt.is_even = lambda self: (self % 2) == 0
 
-        self.assertEqual(__, self.MyInt(1).is_even())
-        self.assertEqual(__, self.MyInt(2).is_even())
+        self.assertEqual(False, self.MyInt(1).is_even())
+        self.assertEqual(True, self.MyInt(2).is_even())
diff --git a/koans/about_with_statements.py b/koans/about_with_statements.py
@@ -22,7 +22,7 @@ def count_lines(self, file_name):
             self.fail()
 
     def test_counting_lines(self):
-        self.assertEqual(__, self.count_lines("example_file.txt"))
+        self.assertEqual(4, self.count_lines("example_file.txt"))
 
     # ------------------------------------------------------------------
 
@@ -41,7 +41,7 @@ def find_line(self, file_name):
             self.fail()
 
     def test_finding_lines(self):
-        self.assertEqual(__, self.find_line("example_file.txt"))
+        self.assertEqual("test\n", self.find_line("example_file.txt"))
 
     ## ------------------------------------------------------------------
     ## THINK ABOUT IT:
@@ -85,13 +85,18 @@ def count_lines2(self, file_name):
             return len(file.readlines())
 
     def test_counting_lines2(self):
-        self.assertEqual(__, self.count_lines2("example_file.txt"))
+        self.assertEqual(4, self.count_lines2("example_file.txt"))
 
     # ------------------------------------------------------------------
 
     def find_line2(self, file_name):
         # Using the context manager self.FileContextManager, rewrite this
         # function to return the first line containing the letter 'e'.
+        with self.FileContextManager("example_file.txt") as f:
+            for line in f:
+                match = re.search("e", line)
+                if match:
+                    return line
         return None
 
     def test_finding_lines2(self):
@@ -105,4 +110,4 @@ def count_lines3(self, file_name):
             return len(file.readlines())
 
     def test_open_already_has_its_own_built_in_context_manager(self):
-        self.assertEqual(__, self.count_lines3("example_file.txt"))
+        self.assertEqual(4, self.count_lines3("example_file.txt"))
