Python CoverageDataFiles.combine_parallel_data方法代码示例

# 需要导入模块: from coverage.data import CoverageDataFiles [as 别名]
# 或者: from coverage.data.CoverageDataFiles import combine_parallel_data [as 别名]

#.........这里部分代码省略.........
    def save(self):
        """Save the collected coverage data to the data file."""
        self._init()
        self.get_data()
        self.data_files.write(self.data, suffix=self.data_suffix)

    def combine(self, data_paths=None):
        """Combine together a number of similarly-named coverage data files.

        All coverage data files whose name starts with `data_file` (from the
        coverage() constructor) will be read, and combined together into the
        current measurements.

        `data_paths` is a list of files or directories from which data should
        be combined. If no list is passed, then the data files from the
        directory indicated by the current data file (probably the current
        directory) will be combined.

        .. versionadded:: 4.0
            The `data_paths` parameter.

        """
        self._init()
        self.get_data()

        aliases = None
        if self.config.paths:
            aliases = PathAliases()
            for paths in self.config.paths.values():
                result = paths[0]
                for pattern in paths[1:]:
                    aliases.add(pattern, result)

        self.data_files.combine_parallel_data(self.data, aliases=aliases, data_paths=data_paths)

    def get_data(self):
        """Get the collected data and reset the collector.

        Also warn about various problems collecting data.

        Returns a :class:`coverage.CoverageData`, the collected coverage data.

        .. versionadded:: 4.0

        """
        self._init()
        if not self._measured:
            return self.data

        self.collector.save_data(self.data)

        # If there are still entries in the source_pkgs list, then we never
        # encountered those packages.
        if self._warn_unimported_source:
            for pkg in self.source_pkgs:
                if pkg not in sys.modules:
                    self._warn("Module %s was never imported." % pkg)
                elif not (
                    hasattr(sys.modules[pkg], '__file__') and
                    os.path.exists(sys.modules[pkg].__file__)
                ):
                    self._warn("Module %s has no Python source." % pkg)
                else:
                    self._warn("Module %s was previously imported, but not measured." % pkg)

        # Find out if we got any data.

# 需要导入模块: from coverage.data import CoverageDataFiles [as 别名]
# 或者: from coverage.data.CoverageDataFiles import combine_parallel_data [as 别名]

#.........这里部分代码省略.........
        covdata1.set_lines(LINES_1)
        self.data_files.write(covdata1, suffix=True)
        self.assert_doesnt_exist(".coverage")
        data_files1 = glob.glob(".coverage.*")
        self.assertEqual(len(data_files1), 1)

        # Another suffix=True will choose a different name.
        covdata2 = CoverageData()
        covdata2.set_lines(LINES_1)
        self.data_files.write(covdata2, suffix=True)
        self.assert_doesnt_exist(".coverage")
        data_files2 = glob.glob(".coverage.*")
        self.assertEqual(len(data_files2), 2)

        # In addition to being different, the suffixes have the pid in them.
        self.assertTrue(all(str(os.getpid()) in fn for fn in data_files2))

    def test_combining(self):
        self.assert_doesnt_exist(".coverage.1")
        self.assert_doesnt_exist(".coverage.2")

        covdata1 = CoverageData()
        covdata1.set_lines(LINES_1)
        self.data_files.write(covdata1, suffix='1')
        self.assert_exists(".coverage.1")
        self.assert_doesnt_exist(".coverage.2")

        covdata2 = CoverageData()
        covdata2.set_lines(LINES_2)
        self.data_files.write(covdata2, suffix='2')
        self.assert_exists(".coverage.2")

        covdata3 = CoverageData()
        self.data_files.combine_parallel_data(covdata3)
        self.assert_line_counts(covdata3, SUMMARY_1_2)
        self.assert_measured_files(covdata3, MEASURED_FILES_1_2)
        self.assert_doesnt_exist(".coverage.1")
        self.assert_doesnt_exist(".coverage.2")

    def test_erasing(self):
        covdata1 = CoverageData()
        covdata1.set_lines(LINES_1)
        self.data_files.write(covdata1)

        covdata1.erase()
        self.assert_line_counts(covdata1, {})

        self.data_files.erase()
        covdata2 = CoverageData()
        self.data_files.read(covdata2)
        self.assert_line_counts(covdata2, {})

    def read_json_data_file(self, fname):
        """Read a JSON data file for testing the JSON directly."""
        with open(fname, 'r') as fdata:
            go_away = fdata.read(len(CoverageData._GO_AWAY))
            self.assertEqual(go_away, CoverageData._GO_AWAY)
            return json.load(fdata)

    def test_file_format(self):
        # Write with CoverageData, then read the JSON explicitly.
        covdata = CoverageData()
        covdata.set_lines(LINES_1)
        self.data_files.write(covdata)

        data = self.read_json_data_file(".coverage")