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import os
import sys
import re
import traceback
import mimetypes
import difflib
import shutil
from . import util
class TestFailureException(Exception):
def __init__(self, message, *args):
self.message = message
self.files = []
for a in args:
self.files.append(str(a))
def __str__(self):
return self.message
def __repr__(self):
return "<TestFailureException '{}' with files: {}>".format(self.message, repr(self.files))
class TestLogger:
def __init__(self):
self.indentation = 0
self.test_name = ''
self.outputs = [sys.stdout]
self.failed = False
def subprocess_print(self, line: str):
for o in self.outputs:
o.write(line)
o.flush()
def rawprint(self, line: str, with_stdout=True):
for o in self.outputs:
if o == sys.stdout and not with_stdout:
continue
for l in line.split('\n'):
if self.indentation > 0:
o.write(self.indentation*' ')
o.write(l)
o.write('\n')
o.flush()
def add_output(self, o, header='', footer=''):
os.makedirs(os.path.dirname(o), exist_ok=True)
self.outputs.append(open(o, "a"))
def print(self, line: str, with_stdout=True):
self.rawprint('.. ' + line, with_stdout)
def comment(self, line: str):
self.rawprint('// ' + line)
def header(self, text):
self.rawprint('\n## ' + text + ' ##\n')
def indent(self):
self.indentation += 4
def dedent(self):
self.indentation -= 4
def begin_test(self, test_name: str, print_header: bool=True):
self.test_name = test_name
if print_header:
self.rawprint(">> Test {}".format(test_name))
self.indent()
self.failed = False
def end_test(self, test_name: str, print_footer: bool=True):
if self.failed:
self.rawprint("$$ FAILED")
self.dedent()
if print_footer:
self.rawprint("<< Test {}".format(test_name))
self.test_name = ''
def success(self, message):
self.rawprint("** " + message)
def error(self, message):
self.failed = True
self.rawprint("!! " + message)
def failure(self, ex):
self.failed = True
self.rawprint("!+ FAILURE in {}: {}".format(self.test_name, ex))
self.rawprint('>> Callstack')
tb = traceback.extract_tb(sys.exc_info()[2])
for frame in reversed(tb):
filename = util.sanitise_filename(frame.filename)
filename = re.sub('.*site-packages/', 'site-packages/', filename)
if filename[0] == '/':
filename = filename[1:]
self.rawprint(" File \"{}\", line {}, in {}".format(filename, frame.lineno, frame.name))
self.rawprint(" {}".format(frame.line))
self.rawprint('<< Callstack')
if isinstance(ex, TestFailureException):
file_list = []
for f in ex.files:
fname = '{}_{}'.format(self.test_name, os.path.basename(f))
if 'data' in f:
ext = fname.rfind('.')
if ext > 0:
fname = fname[0:ext] + '_ref' + fname[ext:]
shutil.copyfile(f, util.get_artifact_path(fname))
file_list.append(fname)
diff_file = ''
diff = ''
# Special handling for the common case where we have two files to generate comparisons
if len(file_list) == 2:
mime = mimetypes.guess_type(ex.files[0])
if 'image' in mime[0]:
# If we have two files and they are images, a failed image comparison should have
# generated a diff.png. Grab it and include it
diff_tmp_file = util.get_tmp_path('diff.png')
if os.path.exists(diff_tmp_file):
diff_artifact = '{}_diff.png'.format(self.test_name)
shutil.move(diff_tmp_file, util.get_artifact_path(diff_artifact))
diff_file = ' ({})'.format(diff_artifact)
elif 'text' in mime[0] or 'xml' in mime[0]:
with open(ex.files[0]) as f:
fromlines = f.readlines()
with open(ex.files[1]) as f:
tolines = f.readlines()
diff = difflib.unified_diff(fromlines, tolines, fromfile=file_list[0], tofile=file_list[1])
if diff != '':
self.rawprint("=+ Compare: " + ','.join(file_list) + diff_file)
self.indent()
self.rawprint(''.join(diff).strip())
self.dedent()
self.rawprint("=- Compare")
elif len(file_list) > 0:
self.rawprint("== Compare: " + ','.join(file_list) + diff_file)
self.rawprint("!- FAILURE")
log = TestLogger()
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