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#!/usr/bin/env python
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Self-test for skimage.
import filecmp
import os
import subprocess
import sys
class BinaryNotFoundException(Exception):
def __str__ (self):
return ("Could not find binary!\n"
"Did you forget to build the tools project?\n"
"Self tests failed")
# Find a path to the binary to use. Iterates through a list of possible
# locations the binary may be.
def PickBinaryPath(base_dir):
POSSIBLE_BINARY_PATHS = [
'out/Debug/skimage',
'out/Release/skimage',
'xcodebuild/Debug/skimage',
'xcodebuild/Release/skimage',
]
for binary in POSSIBLE_BINARY_PATHS:
binary_full_path = os.path.join(base_dir, binary)
if (os.path.exists(binary_full_path)):
return binary_full_path
raise BinaryNotFoundException
# Quit early if two files have different content.
def DieIfFilesMismatch(expected, actual):
if not filecmp.cmp(expected, actual):
print 'Error: file mismatch! expected=%s , actual=%s' % (
expected, actual)
exit(1)
def main():
# Use the directory of this file as the out directory
file_dir = os.path.abspath(os.path.dirname(__file__))
trunk_dir = os.path.normpath(os.path.join(file_dir, os.pardir, os.pardir))
# Find the binary
skimage_binary = PickBinaryPath(trunk_dir)
print "Running " + skimage_binary
# Generate an expectations file from known images.
images_dir = os.path.join(file_dir, "skimage", "input",
"images-with-known-hashes")
expectations_path = os.path.join(file_dir, "skimage", "output-actual",
"create-expectations", "expectations.json")
subprocess.check_call([skimage_binary, "--readPath", images_dir,
"--createExpectationsPath", expectations_path])
# Make sure the expectations file was generated correctly.
golden_expectations = os.path.join(file_dir, "skimage", "output-expected",
"create-expectations",
"expectations.json")
DieIfFilesMismatch(expected=golden_expectations, actual=expectations_path)
# Tell skimage to read back the expectations file it just wrote, and
# confirm that the images in images_dir match it.
subprocess.check_call([skimage_binary, "--readPath", images_dir,
"--readExpectationsPath", expectations_path])
# TODO(scroggo): Add a test that compares expectations and image files that
# are known to NOT match, and make sure it returns an error.
# Done with all tests.
print "Self tests succeeded!"
if __name__ == "__main__":
main()
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