Ejemplo n.º 1
0
class LcovParser(object):
    """Parser for gcov/lcov tracefile format.__init__

    See http://ltp.sourceforge.net/coverage/lcov/geninfo.1.php.
    """

    END_OF_RECORD = "end_of_record"

    def __init__(self):
        self.results = CoverageResults()
        self.clear_record()

    def set_record(self, source_file=None, coverage=None):
        if source_file is not None:
            self._source_file = source_file
        if coverage is not None:
            self._coverage = coverage

    def clear_record(self):
        self._source_file = None
        self._coverage = []

    def store_record(self):
        try:
            with open(self._source_file) as source_file:
                source = source_file.read()
        except (TypeError, IOError):
            raise LcovParserError("Failed to read source file %r"
                                  % (self._source_file,))
        num_lines = len(source.splitlines())
        cover_dict = dict(self._coverage)
        coverage = [cover_dict.get(i) for i in range(1, num_lines + 1)]
        self.results.append(FileCoverage(
            filename=self._source_file,
            source=source,
            coverage=coverage,
        ))

    def feed(self, line):
        line = line.strip()
        if line == self.END_OF_RECORD:
            self.store_record()
            self.clear_record()
        else:
            line_type, _, rest = line.partition(':')
            handler = getattr(self, "handle_%s" % line_type.lower(),
                              lambda rest: None)
            handler(rest)

    def handle_sf(self, abs_path):
        """Handle a source filename."""
        self._source_file = os.path.normpath(abs_path)

    def handle_da(self, rest):
        """Handle counts for lines that resulted in executable code."""
        # rest = <line number>,<execution count>[,<checksum>]
        line_number, execution_count = rest.split(',')[:2]
        line_number = int(line_number)
        execution_count = int(execution_count)
        self._coverage.append((line_number, execution_count))
Ejemplo n.º 2
0
 def test_extend(self):
     r1 = CoverageResults()
     f1 = mk_file_coverage()
     r1.append(f1)
     r2 = CoverageResults()
     f2 = mk_file_coverage()
     r2.append(f2)
     r1.extend(r2)
     self.assertEqual(r1.files, [f1, f2])
     self.assertEqual(r2.files, [f2])
Ejemplo n.º 3
0
def mk_coverage_results(results=1):
    c = CoverageResults()
    for i in range(results):
        c.append(mk_file_coverage())
    return c
Ejemplo n.º 4
0
 def __init__(self):
     self.results = CoverageResults()
     self.clear_record()
Ejemplo n.º 5
0
 def test_append(self):
     r = CoverageResults()
     f = mk_file_coverage()
     r.append(f)
     self.assertEqual(r.files, [f])