create test file for pull requests (#433)

tests/test_PR.py

@@ -0,0 +1,29 @@
+"""
+Tests meant to be run with pytest
+"""
+
+import sys
+import os
+import pytest
+
+from moviepy.editor import *
+
+
+def download_youtube_video(url, filename):
+    if not os.path.exists(filename):
+       print("\nDownloading %s\n" % filename)
+       download_webfile(url, filename)
+       print("Downloading complete...\n")
+
+
+def test_PR_339():
+    #in caption mode
+    overlay = TextClip(txt='foo',
+                       color='white',
+                       size=(640, 480),
+                       method='caption',
+                       align='center',
+                       fontsize=25)
+
+    #in_label_mode
+    overlay = TextClip(txt='foo', method='label')