"""Mocks for testing"""

class MockInterval():
    """Mock Interval object for testing Feature"""
    def __init__(self, start, end):
        self.start = start
        self.end = end
        self.duration = end - start

    @classmethod
    def from_duration(cls, duration):
        return cls(start=0, end=duration)

    def to_json(self):
        return {"start": self.start, "end": self.end}

    def __eq__(self, other):
        return self.start == other.start and self.end == other.end

class MockFeature():
    """Mock feature object for testing"""
    def __init__(self, interval, source=None, feature_extractor="mock", score=0.0):
        self.interval = interval
        self.source = source
        self.feature_extractor = feature_extractor
        self.score = score

    def to_json(self):
        return {"interval": self.interval}

    def __eq__(self, other):
        return (self.interval == other.interval and self.source == other.source
                and self.feature_extractor == other.feature_extractor)

class MockSource():
    """Mock Source object for testing Feature"""
    def __init__(self, source=None, path=None):
        self.source = source
        self.path = path

    def __str__(self):
        return self.source

    def to_json(self):
        return {"source": self.source}

    def __eq__(self, other):
        return self.source == other.source

    def duration(self, duration=30.0):
        """Mock a float duration"""
        return duration