| # Copyright (c) 2014 The Chromium OS Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| import logging |
| import time |
| |
| from autotest_lib.client.cros.video import method_logger |
| |
| |
| class VideoScreenShotVerifier(object): |
| """ |
| Verifies that received screenshots are same as expected. |
| |
| This class relies on a provided image comparer to decide if two images are |
| one and the same. |
| |
| """ |
| |
| |
| @method_logger.log |
| def __init__(self, image_comparer, wait_time_btwn_verifications): |
| """ |
| Initializes the verifier. |
| |
| @param image_comparer: object, image comparer to use. |
| @param wait_time_btwn_verifications: time to wait between two successive |
| calls to compare two images. |
| |
| """ |
| self.image_comparer = image_comparer |
| self.wait_time_btwn_verifications = wait_time_btwn_verifications |
| |
| |
| @method_logger.log |
| def verify(self, golden_images, test_images): |
| """ |
| Verifies that two sets of images are the same using provided comparer. |
| |
| @param golden_images: list of complete paths to golden images. |
| @param test_images: list of complete paths to test images. |
| |
| @returns a list of dictionaries of test results for each comparison. |
| |
| """ |
| with self.image_comparer as comparer: |
| test_results = [] |
| for golden_image, test_image in zip(golden_images, test_images): |
| upload_res = comparer.compare(golden_image, test_image) |
| logging.debug('**Upload Results:**') |
| logging.debug(upload_res) |
| test_results.append(upload_res) |
| time.sleep(self.wait_time_btwn_verifications) |
| |
| return test_results |
| |
| |
