create tools/tests/run_all.py to run all our Python self-tests within tools

tools/tests/run_all.py

Index: tools/tests/run_all.py
diff --git a/tools/tests/run_all.py b/tools/tests/run_all.py
new file mode 100755
index 0000000000000000000000000000000000000000..d5d41af5a12609b781d4699fdeda43c18eec93b1
--- /dev/null
+++ b/tools/tests/run_all.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.

[scroggo, 2013/12/18 22:32:04]

Is this the right copyright for Skia code? I thought we used:

/*
 * Copyright 2013 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

(with #s instead of C comments)

[epoger, 2013/12/19 18:22:08]

Right you are!  Thanks for catching that.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Run all self-tests that were written in Python, raising an exception if any
+# of them fail.
+
+import skimage_self_test
+
+def main():
+  """Run all self-tests, raising an exception if any of them fail."""
+  skimage_self_test.main()
+
+if __name__ == '__main__':
+  main()