Make pyfakefs API PEP-8 conform

- changed methods names
- added old method names as depracated version
- added possibility to switch on deprecation warning
- see pytest-dev#186

README.md

@@ -41,7 +41,7 @@ The PyTest plugin provides the `fs` fixture for use in your test. For example:
 ```python
 def my_fakefs_test(fs):
     # "fs" is the reference to the fake file system
-    fs.CreateFile('/var/data/xx1.txt')
+    fs.create_file('/var/data/xx1.txt')
     assert os.path.exists('/var/data/xx1.txt')
 ```
 
@@ -56,8 +56,8 @@ import pyfakefs.fake_filesystem as fake_fs
 fs = fake_fs.FakeFilesystem()
 
 # Do some setup on the faked file system
-fs.CreateFile('/var/data/xx1.txt')
-fs.CreateFile('/var/data/xx2.txt')
+fs.create_file('/var/data/xx1.txt')
+fs.create_file('/var/data/xx2.txt')
 
 # Replace some built-in file system related modules you use with faked ones
 

docs/usage.rst

@@ -24,7 +24,7 @@ The PyTest plugin provides the ``fs`` fixture for use in your test. For example:
 
    def my_fakefs_test(fs):
        # "fs" is the reference to the fake file system
-       fs.CreateFile('/var/data/xx1.txt')
+       fs.create_file('/var/data/xx1.txt')
        assert os.path.exists('/var/data/xx1.txt')
 
 Patch using unittest.mock
@@ -40,8 +40,8 @@ If you are using other means of testing like `nose <http://nose2.readthedocs.io>
    fs = fake_fs.FakeFilesystem()
 
    # Do some setup on the faked file system
-   fs.CreateFile('/var/data/xx1.txt')
-   fs.CreateFile('/var/data/xx2.txt')
+   fs.create_file('/var/data/xx1.txt')
+   fs.create_file('/var/data/xx2.txt')
 
    # Replace some built-in file system related modules you use with faked ones
 

example_test.py

@@ -19,11 +19,11 @@
 Test the :py:class`pyfakefs.example` module to demonstrate the usage of the
 :py:class`pyfakefs.fake_filesystem_unittest.TestCase` base class.
 
-Fake filesystem functions like `CreateFile()`, `CreateDirectory()` or `CreateLink()`
+Fake filesystem functions like `create_file()`, `create_dir()` or `symlink()`
 are often used to set up file structures at the beginning of a test.
 While you could also use the familiar `open()`, `os.mkdirs()` and similar functions,
 these functions can make the test code shorter and more readable.
-`CreateFile()` is particularly convenient because it creates all parent directories
+`create_file()` is particularly convenient because it creates all parent directories
 and allows you to specify the contents or the size of the file.
 """
 
@@ -83,8 +83,8 @@ def test_create_file(self):
 
     def test_delete_file(self):
         """Test example.delete_file() which uses `os.remove()`."""
-        self.fs.CreateFile('/test/full.txt',
-                           contents='First line\n'
+        self.fs.create_file('/test/full.txt',
+                            contents='First line\n'
                                     'Second Line\n')
         self.assertTrue(os.path.exists('/test/full.txt'))
         example.delete_file('/test/full.txt')
@@ -93,13 +93,13 @@ def test_delete_file(self):
     def test_file_exists(self):
         """Test example.path_exists() which uses `os.path.exists()`."""
         self.assertFalse(example.path_exists('/test/empty.txt'))
-        self.fs.CreateFile('/test/empty.txt')
+        self.fs.create_file('/test/empty.txt')
         self.assertTrue(example.path_exists('/test/empty.txt'))
 
     def test_get_globs(self):
         """Test example.get_glob()."""
         self.assertFalse(os.path.isdir('/test'))
-        self.fs.CreateDirectory('/test/dir1/dir2a')
+        self.fs.create_dir('/test/dir1/dir2a')
         self.assertTrue(os.path.isdir('/test/dir1/dir2a'))
         # os.mkdirs() works, too.
         os.makedirs('/test/dir1/dir2b')
@@ -116,7 +116,7 @@ def test_get_globs(self):
 
     def test_rm_tree(self):
         """Test example.rm_tree() using `shutil.rmtree()`."""
-        self.fs.CreateDirectory('/test/dir1/dir2a')
+        self.fs.create_dir('/test/dir1/dir2a')
         # os.mkdirs() works, too.
         os.makedirs('/test/dir1/dir2b')
         self.assertTrue(os.path.isdir('/test/dir1/dir2b'))
@@ -132,10 +132,10 @@ def test_scandir(self):
         The os module has been replaced with the fake os module so the
         fake filesystem path entries are returned instead of `os.DirEntry` objects.
         """
-        self.fs.CreateFile('/test/text.txt')
-        self.fs.CreateDirectory('/test/dir')
-        self.fs.CreateFile('/linktest/linked')
-        self.fs.CreateLink('/test/linked_file', '/linktest/linked')
+        self.fs.create_file('/test/text.txt')
+        self.fs.create_dir('/test/dir')
+        self.fs.create_file('/linktest/linked')
+        self.fs.symlink('/test/linked_file', '/linktest/linked')
 
         entries = sorted(example.scandir('/test'), key=lambda e: e.name)
         self.assertEqual(3, len(entries))

fake_filesystem_glob_test.py

@@ -33,11 +33,11 @@ def setUp(self):
         self.filesystem = fake_filesystem.FakeFilesystem(path_separator='/')
         self.glob = fake_filesystem_glob.FakeGlobModule(self.filesystem)
         directory = './xyzzy'
-        self.filesystem.CreateDirectory(directory)
-        self.filesystem.CreateDirectory('%s/subdir' % directory)
-        self.filesystem.CreateDirectory('%s/subdir2' % directory)
-        self.filesystem.CreateFile('%s/subfile' % directory)
-        self.filesystem.CreateFile('[Temp]')
+        self.filesystem.create_dir(directory)
+        self.filesystem.create_dir('%s/subdir' % directory)
+        self.filesystem.create_dir('%s/subdir2' % directory)
+        self.filesystem.create_file('%s/subfile' % directory)
+        self.filesystem.create_file('[Temp]')
 
     def testGlobEmpty(self):
         self.assertEqual(self.glob.glob(''), [])