add: test for commandy.py

thinwybk · thinwybk · commit a6bcf8e0ddbf · 2016-01-21T20:18:35.000+01:00
test for MoveFileCommand.execute()
diff --git a/test_command.py b/test_command.py
@@ -0,0 +1,46 @@
+from command import MoveFileCommand
+import unittest, os, shutil, subprocess
+
+
+class StrategyTest(unittest.TestCase):
+
+    def __get_directories(self):
+        """
+        Get the directories relevant for tests:
+        - self.file_dir: the directory of this script
+        - self.test_dir: the root directory for tests
+        """
+        self.file_dir = os.path.dirname(os.path.realpath(__file__))
+        self.test_dir = os.path.join(self.file_dir, 'test_command')
+
+    def setUp(self):
+        """
+        Creates a temporary directory and file:
+        ./test_command
+           /foo.txt
+        """
+        os.mkdir('test_command')
+        open('test_command/foo.txt', 'w').close()
+        self.__get_directories()
+
+    def test_sequential_execution(self):
+        self.command_stack = []
+        self.command_stack.append(MoveFileCommand(os.path.join(self.test_dir, 'foo.txt'), os.path.join(self.test_dir, 'bar.txt')))
+        self.command_stack.append(MoveFileCommand(os.path.join(self.test_dir, 'bar.txt'), os.path.join(self.test_dir, 'baz.txt')))
+        self.command_stack[0].execute()
+        output_after_first_command = os.listdir(self.test_dir)
+        self.assertEqual(output_after_first_command[0], 'bar.txt')
+        self.command_stack[1].execute()
+        output_after_second_command = os.listdir(self.test_dir)
+        self.assertEqual(output_after_second_command[0], 'baz.txt')
+
+    def tearDown(self):
+        """
+        Removes the temporary directory and its content:
+        ./test_command
+           ...
+        """
+        shutil.rmtree('test_command')
+
+if __name__ == "__main__":
+    unittest.main()
