add unittest for render_pictures binary
Once committed, this will be run as part of RunToolSelfTests on http://108.170.217.252:10117/builders/Housekeeper-PerCommit .
BUG=skia:1943
R=rmistry@google.com
Author: epoger@google.com
Review URL: https://codereview.chromium.org/124253002
git-svn-id: http://skia.googlecode.com/svn/trunk@12941 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tools/tests/base_unittest.py b/tools/tests/base_unittest.py
new file mode 100755
index 0000000..0960399
--- /dev/null
+++ b/tools/tests/base_unittest.py
@@ -0,0 +1,85 @@
+#!/usr/bin/python
+
+"""
+Copyright 2014 Google Inc.
+
+Use of this source code is governed by a BSD-style license that can be
+found in the LICENSE file.
+
+A wrapper around the standard Python unittest library, adding features we need
+for various unittests within this directory.
+"""
+
+import os
+import subprocess
+import unittest
+
+
+class TestCase(unittest.TestCase):
+
+ def shortDescription(self):
+ """Tell unittest framework to not print docstrings for test cases."""
+ return None
+
+ def run_command(self, args):
+ """Runs a program from the command line and returns stdout.
+
+ Args:
+ args: Command line to run, as a list of string parameters. args[0] is the
+ binary to run.
+
+ Returns:
+ stdout from the program, as a single string.
+
+ Raises:
+ Exception: the program exited with a nonzero return code.
+ """
+ proc = subprocess.Popen(args,
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ (stdout, stderr) = proc.communicate()
+ if proc.returncode is not 0:
+ raise Exception('command "%s" failed: %s' % (args, stderr))
+ return stdout
+
+ def find_path_to_program(self, program):
+ """Returns path to an existing program binary.
+
+ Args:
+ program: Basename of the program to find (e.g., 'render_pictures').
+
+ Returns:
+ Absolute path to the program binary, as a string.
+
+ Raises:
+ Exception: unable to find the program binary.
+ """
+ trunk_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
+ os.pardir, os.pardir))
+ possible_paths = [os.path.join(trunk_path, 'out', 'Release', program),
+ os.path.join(trunk_path, 'out', 'Debug', program),
+ os.path.join(trunk_path, 'out', 'Release',
+ program + '.exe'),
+ os.path.join(trunk_path, 'out', 'Debug',
+ program + '.exe')]
+ for try_path in possible_paths:
+ if os.path.isfile(try_path):
+ return try_path
+ raise Exception('cannot find %s in paths %s; maybe you need to '
+ 'build %s?' % (program, possible_paths, program))
+
+
+def main(test_case_class):
+ """Run the unit tests within the given class.
+
+ Raises an Exception if any of those tests fail (in case we are running in the
+ context of run_all.py, which depends on that Exception to signal failures).
+
+ TODO(epoger): Make all of our unit tests use the Python unittest framework,
+ so we can leverage its ability to run *all* the tests and report failures at
+ the end.
+ """
+ suite = unittest.TestLoader().loadTestsFromTestCase(test_case_class)
+ results = unittest.TextTestRunner(verbosity=2).run(suite)
+ if not results.wasSuccessful():
+ raise Exception('failed unittest %s' % test_case_class)