Test os.rename

Author: palaviv

tests/snippets/stdlib_os.py

@@ -11,6 +11,7 @@
 assert_raises(OSError, lambda: os.read(fd, 10))
 assert_raises(FileNotFoundError, lambda: os.open('DOES_NOT_EXIST', os.O_RDONLY))
 assert_raises(FileNotFoundError, lambda: os.open('DOES_NOT_EXIST', os.O_WRONLY))
+assert_raises(FileNotFoundError, lambda: os.rename('DOES_NOT_EXIST', 'DOES_NOT_EXIST 2'))
 
 
 assert os.O_RDONLY == 0
@@ -80,6 +81,7 @@ def __exit__(self, exc_type, exc_val, exc_tb):
 
 FILE_NAME = "test1"
 FILE_NAME2 = "test2"
+FILE_NAME3 = "test3"
 SYMLINK_FILE = "symlink"
 SYMLINK_FOLDER = "symlink1"
 FOLDER = "dir1"
@@ -104,6 +106,19 @@ def __exit__(self, exc_type, exc_val, exc_tb):
 	assert os.read(fd, len(CONTENT3)) == CONTENT3
 	os.close(fd)
 
+	fname3 = os.path.join(tmpdir, FILE_NAME3)
+	os.rename(fname, fname3)
+	assert os.path.exists(fname) == False
+	assert os.path.exists(fname3) == True
+
+	fd = os.open(fname3, 0)
+	assert os.read(fd, len(CONTENT2) + len(CONTENT3)) == CONTENT2 + CONTENT3
+	os.close(fd)
+
+	os.rename(fname3, fname)
+	assert os.path.exists(fname3) == False
+	assert os.path.exists(fname) == True
+
 	# wait a little bit to ensure that the file times aren't the same
 	time.sleep(0.1)