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#!/usr/bin/env python # # This builds a html page of all images from the image comparison tests # and opens that page in the browser. # # $ python visual_tests.py # import os import time import six from collections import defaultdict def run(): # Build a website for visual comparison image_dir = "result_images" # build the website _html = "" _html += """ \n""" _subdirs = [name for name in os.listdir(image_dir) if os.path.isdir(os.path.join(image_dir, name))] # loop over all pictures _row = '{0} {1}{2}

[{3}]{4}\n' _failed = "" _failed += "

Only Failed

" _failed += "\n\n" _has_failure = False _body = "" for subdir in _subdirs: if subdir == "test_compare_images": # these are the image which test the image comparison functions... continue pictures = defaultdict(dict) for file in os.listdir(os.path.join(image_dir, subdir)): if os.path.isdir(os.path.join(image_dir, subdir, file)): continue fn, fext = os.path.splitext(file) if fext != ".png": continue # Always use / for URLs. if "-failed-diff" in fn: pictures[fn[:-12]]["f"] = "/".join((subdir, file)) elif "-expected" in fn: pictures[fn[:-9]]["e"] = "/".join((subdir, file)) else: pictures[fn]["c"] = "/".join((subdir, file)) _body += "

{0}

".format(subdir) _body += "

name	actual	expected	diff

\n\n" for name, test in six.iteritems(pictures): if test.get("f", None): # a real failure in the image generation, resulting in different images _has_failure = True s = "(failed)" failed = 'diff'.format(test.get("f", "")) current = '

[{0}]'.format(test.get("c", "")) _failed += _row.format(name, "", current, test.get("e", ""), failed) elif test.get("c", None) is None: # A failure in the test, resulting in no current image _has_failure = True s = "(failed)" failed = '--' current = '(Failure in test, no image produced)' _failed += _row.format(name, "", current, test.get("e", ""), failed) else: s = "(passed)" failed = '--' current = '

[{0}]'.format(test.get("c", "")) _body += _row.format(name, "", current, test.get("e", ""), failed) _body += "

name	actual	expected	diff

\n" _failed += "\n" if _has_failure: _html += _failed _html += _body _html += "\n" index = os.path.join(image_dir, "index.html") with open(index, "w") as f: f.write(_html) try: import webbrowser webbrowser.open(index) except: print("Open {0} in a browser for a visual comparison.".format(str(index))) if __name__ == '__main__': run()

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