How to use the barril.basic.fraction.Fraction function in barril

def testBasicUsage():
    f = FractionValue(3, Fraction(5, 3))
    assert f.number == 3
    assert f.fraction == Fraction(5, 3)

    f.number = 5.5
    f.fraction = Fraction(6, 5)
    assert f.number == 5.5
    assert f.fraction == Fraction(6, 5)

    with pytest.raises(TypeError):
        f.SetNumber("hello")
    with pytest.raises(TypeError):
        f.SetFraction("hello")
    with pytest.raises(ValueError):
        f.SetFraction((1, 2, 3))

    assert FractionValue(3).GetFraction() == Fraction(0, 1)

assert Fraction(5, 3) + Fraction(2, 3) == Fraction(7, 3)
    assert Fraction(5, 3) + 5.0 == Fraction(20, 3)
    assert 5.0 + Fraction(5, 3) == Fraction(20, 3)

    # sub
    assert Fraction(5, 3) - Fraction(2, 3) == Fraction(3, 3)
    assert Fraction(5, 3) - 1.0 == Fraction(2, 3)
    assert 1.0 - Fraction(5, 3) == Fraction(-2, 3)

    # mul
    assert Fraction(5, 3) * Fraction(4, 3) == Fraction(20, 9)
    assert 3 * Fraction(5, 3) == Fraction(15, 3)
    assert Fraction(5, 3) * 3 == Fraction(15, 3)

    # div
    assert Fraction(5, 3) / Fraction(5, 3) == Fraction(15, 15)
    assert Fraction(5, 3) / 3 == Fraction(5, 9)
    assert 3 / Fraction(5, 3) == Fraction(9, 5)

    # inv
    assert Fraction(5, 3).inv() == Fraction(3, 5)

    # neg
    assert -Fraction(5, 3) == Fraction(-5, 3)

assert Fraction(5, 3) + 5.0 == Fraction(20, 3)
    assert 5.0 + Fraction(5, 3) == Fraction(20, 3)

    # sub
    assert Fraction(5, 3) - Fraction(2, 3) == Fraction(3, 3)
    assert Fraction(5, 3) - 1.0 == Fraction(2, 3)
    assert 1.0 - Fraction(5, 3) == Fraction(-2, 3)

    # mul
    assert Fraction(5, 3) * Fraction(4, 3) == Fraction(20, 9)
    assert 3 * Fraction(5, 3) == Fraction(15, 3)
    assert Fraction(5, 3) * 3 == Fraction(15, 3)

    # div
    assert Fraction(5, 3) / Fraction(5, 3) == Fraction(15, 15)
    assert Fraction(5, 3) / 3 == Fraction(5, 9)
    assert 3 / Fraction(5, 3) == Fraction(9, 5)

    # inv
    assert Fraction(5, 3).inv() == Fraction(3, 5)

    # neg
    assert -Fraction(5, 3) == Fraction(-5, 3)

def testCopy():
    f = Fraction(5, 3)
    cf = copy.copy(f)
    assert f == cf
    assert not f != cf
    assert f is not cf

    assert f != Fraction(3, 5)
    assert not f == Fraction(3, 5)

assert 5.0 + Fraction(5, 3) == Fraction(20, 3)

    # sub
    assert Fraction(5, 3) - Fraction(2, 3) == Fraction(3, 3)
    assert Fraction(5, 3) - 1.0 == Fraction(2, 3)
    assert 1.0 - Fraction(5, 3) == Fraction(-2, 3)

    # mul
    assert Fraction(5, 3) * Fraction(4, 3) == Fraction(20, 9)
    assert 3 * Fraction(5, 3) == Fraction(15, 3)
    assert Fraction(5, 3) * 3 == Fraction(15, 3)

    # div
    assert Fraction(5, 3) / Fraction(5, 3) == Fraction(15, 15)
    assert Fraction(5, 3) / 3 == Fraction(5, 9)
    assert 3 / Fraction(5, 3) == Fraction(9, 5)

    # inv
    assert Fraction(5, 3).inv() == Fraction(3, 5)

    # neg
    assert -Fraction(5, 3) == Fraction(-5, 3)

def testOperations():
    # float operator
    assert float(Fraction(5, 3)) == 5.0 / 3.0

    # sum
    assert Fraction(5, 3) + Fraction(2, 3) == Fraction(7, 3)
    assert Fraction(5, 3) + 5.0 == Fraction(20, 3)
    assert 5.0 + Fraction(5, 3) == Fraction(20, 3)

    # sub
    assert Fraction(5, 3) - Fraction(2, 3) == Fraction(3, 3)
    assert Fraction(5, 3) - 1.0 == Fraction(2, 3)
    assert 1.0 - Fraction(5, 3) == Fraction(-2, 3)

    # mul
    assert Fraction(5, 3) * Fraction(4, 3) == Fraction(20, 9)
    assert 3 * Fraction(5, 3) == Fraction(15, 3)
    assert Fraction(5, 3) * 3 == Fraction(15, 3)

    # div
    assert Fraction(5, 3) / Fraction(5, 3) == Fraction(15, 15)
    assert Fraction(5, 3) / 3 == Fraction(5, 9)
    assert 3 / Fraction(5, 3) == Fraction(9, 5)

def testStrFormat():
    """
    Scalar field behavior. In this test we make sure that the
    Fraction.__str__ method calls FormatFloat, which handles
    the locale properly.
    """
    import barril.basic.format_float

    # By default, the numbers are formatted using "%g"
    f = Fraction(5, 3)
    assert str(f), "5/3"

    # Test the use of FormatFloat | 5.6 is 28/5 | 5.6/3 is 28/15
    f = Fraction(5.6, 3)
    assert str(f) == "28/15"

    original_format_float = barril.basic.format_float.FormatFloat
    barril.basic.format_float.FormatFloat = lambda x, y: "X%.2fX" % y
    try:
        assert str(f) == "X28.00X/X15.00X"
    finally:
        barril.basic.format_float.FormatFloat = original_format_float

    assert str(f) == "28/15"

def testBasicUsage():
    f = FractionValue(3, Fraction(5, 3))
    assert f.number == 3
    assert f.fraction == Fraction(5, 3)

    f.number = 5.5
    f.fraction = Fraction(6, 5)
    assert f.number == 5.5
    assert f.fraction == Fraction(6, 5)

    with pytest.raises(TypeError):
        f.SetNumber("hello")
    with pytest.raises(TypeError):
        f.SetFraction("hello")
    with pytest.raises(ValueError):
        f.SetFraction((1, 2, 3))

    assert FractionValue(3).GetFraction() == Fraction(0, 1)

def testOperations():
    # float operator
    assert float(Fraction(5, 3)) == 5.0 / 3.0

    # sum
    assert Fraction(5, 3) + Fraction(2, 3) == Fraction(7, 3)
    assert Fraction(5, 3) + 5.0 == Fraction(20, 3)
    assert 5.0 + Fraction(5, 3) == Fraction(20, 3)

    # sub
    assert Fraction(5, 3) - Fraction(2, 3) == Fraction(3, 3)
    assert Fraction(5, 3) - 1.0 == Fraction(2, 3)
    assert 1.0 - Fraction(5, 3) == Fraction(-2, 3)

    # mul
    assert Fraction(5, 3) * Fraction(4, 3) == Fraction(20, 9)
    assert 3 * Fraction(5, 3) == Fraction(15, 3)
    assert Fraction(5, 3) * 3 == Fraction(15, 3)

    # div
    assert Fraction(5, 3) / Fraction(5, 3) == Fraction(15, 15)
    assert Fraction(5, 3) / 3 == Fraction(5, 9)
    assert 3 / Fraction(5, 3) == Fraction(9, 5)

    # inv
    assert Fraction(5, 3).inv() == Fraction(3, 5)

    # neg
    assert -Fraction(5, 3) == Fraction(-5, 3)

def SetFraction(self, fraction):
        """
        Sets the fractional part of this object.

        :type fraction: Fraction or tuple(float, float)
        :param fraction:
            The fraction for this FractionValue object. A pair (numerator, denominator)
            is also accepted.
        """
        CheckType(fraction, (Fraction, tuple))

        # convert a tuple
        if isinstance(fraction, tuple):
            if len(fraction) != 2:
                raise ValueError(f"Expected a tuple (numerator, denominator), got {fraction!r}")
            fraction = Fraction(*fraction)

        self._fraction = fraction