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import os
from tap.directive import Directive
from tap.line import Result
try:
import more_itertools # noqa
import yaml # noqa
ENABLE_VERSION_13 = True
except ImportError: # pragma: no cover
ENABLE_VERSION_13 = False
class Tracker(object):
def __init__(
self,
outdir=None,
combined=False,
streaming=False,
stream=None,
header=True,
plan=None,
):
self.outdir = outdir
# Combine all the test results into one file.
self.combined = combined
self.combined_line_number = 0
# Test case ordering is important for the combined results
# because of how numbers are assigned. The test cases
# must be tracked in order so that reporting can sequence
# the line numbers properly.
self.combined_test_cases_seen = []
# Stream output directly to a stream instead of file output.
self.streaming = streaming
self.stream = stream
# The total number of tests we expect (or None if we don't know yet).
self.plan = plan
self._plan_written = False
# Display the test case header unless told not to.
self.header = header
# Internal state for tracking each test case.
self._test_cases = {}
self._sanitized_table = str.maketrans(" \\/\n", "----")
if self.streaming:
self._write_tap_version(self.stream)
if self.plan is not None:
self._write_plan(self.stream)
def _get_outdir(self):
return self._outdir
def _set_outdir(self, outdir):
self._outdir = outdir
if outdir and not os.path.exists(outdir):
os.makedirs(outdir)
outdir = property(_get_outdir, _set_outdir)
def _track(self, class_name):
"""Keep track of which test cases have executed."""
if self._test_cases.get(class_name) is None:
if self.streaming and self.header:
self._write_test_case_header(class_name, self.stream)
self._test_cases[class_name] = []
if self.combined:
self.combined_test_cases_seen.append(class_name)
def add_ok(self, class_name, description, directive=""):
result = Result(
ok=True,
number=self._get_next_line_number(class_name),
description=description,
directive=Directive(directive),
)
self._add_line(class_name, result)
def add_not_ok(self, class_name, description, directive="", diagnostics=None):
result = Result(
ok=False,
number=self._get_next_line_number(class_name),
description=description,
diagnostics=diagnostics,
directive=Directive(directive),
)
self._add_line(class_name, result)
def add_skip(self, class_name, description, reason):
directive = "SKIP {0}".format(reason)
result = Result(
ok=True,
number=self._get_next_line_number(class_name),
description=description,
directive=Directive(directive),
)
self._add_line(class_name, result)
def _add_line(self, class_name, result):
self._track(class_name)
if self.streaming:
print(result, file=self.stream)
self._test_cases[class_name].append(result)
def _get_next_line_number(self, class_name):
if self.combined or self.streaming:
# This has an obvious side effect. Oh well.
self.combined_line_number += 1
return self.combined_line_number
else:
try:
return len(self._test_cases[class_name]) + 1
except KeyError:
# A result is created before the call to _track so the test
# case may not be tracked yet. In that case, the line is 1.
return 1
def set_plan(self, total):
"""Notify the tracker how many total tests there will be."""
self.plan = total
if self.streaming:
# This will only write the plan if we haven't written it
# already but we want to check if we already wrote a
# test out (in which case we can't just write the plan out
# right here).
if not self.combined_test_cases_seen:
self._write_plan(self.stream)
elif not self.combined:
raise ValueError(
"set_plan can only be used with combined or streaming output"
)
def generate_tap_reports(self):
"""Generate TAP reports.
The results are either combined into a single output file or
the output file name is generated from the test case.
"""
if self.streaming:
# We're streaming but set_plan wasn't called, so we can only
# know the plan now (at the end).
if not self._plan_written:
print("1..{0}".format(self.combined_line_number), file=self.stream)
self._plan_written = True
return
if self.combined:
combined_file = "testresults.tap"
if self.outdir:
combined_file = os.path.join(self.outdir, combined_file)
with open(combined_file, "w") as out_file:
self._write_tap_version(out_file)
if self.plan is not None:
print("1..{0}".format(self.plan), file=out_file)
for test_case in self.combined_test_cases_seen:
self.generate_tap_report(
test_case, self._test_cases[test_case], out_file
)
if self.plan is None:
print("1..{0}".format(self.combined_line_number), file=out_file)
else:
for test_case, tap_lines in self._test_cases.items():
with open(self._get_tap_file_path(test_case), "w") as out_file:
self._write_tap_version(out_file)
self.generate_tap_report(test_case, tap_lines, out_file)
def generate_tap_report(self, test_case, tap_lines, out_file):
self._write_test_case_header(test_case, out_file)
for tap_line in tap_lines:
print(tap_line, file=out_file)
# For combined results, the plan is only output once after
# all the test cases complete.
if not self.combined:
print("1..{0}".format(len(tap_lines)), file=out_file)
def _write_tap_version(self, filename):
"""Write a Version 13 TAP row.
``filename`` can be a filename or a stream.
"""
if ENABLE_VERSION_13:
print("TAP version 13", file=filename)
def _write_plan(self, stream):
"""Write the plan line to the stream.
If we have a plan and have not yet written it out, write it to
the given stream.
"""
if self.plan is not None:
if not self._plan_written:
print("1..{0}".format(self.plan), file=stream)
self._plan_written = True
def _write_test_case_header(self, test_case, stream):
print("# TAP results for {test_case}".format(test_case=test_case), file=stream)
def _get_tap_file_path(self, test_case):
"""Get the TAP output file path for the test case."""
sanitized_test_case = test_case.translate(self._sanitized_table)
tap_file = sanitized_test_case + ".tap"
if self.outdir:
return os.path.join(self.outdir, tap_file)
return tap_file