def set_up_fractions():
frac_1_2 = ut.Fraction(1, 2)
frac_2_3 = ut.Fraction(2, 3)
frac_n2_3 = ut.Fraction(-2, 3)
frac_1_4 = ut.Fraction(1, 4)
frac_0_1 = ut.Fraction(0, 1)
return frac_1_2, frac_2_3, frac_n2_3, frac_1_4, frac_0_1
def test_fraction_eq(set_up_fractions):
frac_1_2, frac_2_3, frac_n2_3, frac_1_4, frac_0_1 = set_up_fractions
assert frac_1_2 == ut.Fraction(1, 2)
assert frac_2_3 == ut.Fraction(4, 6)
assert frac_n2_3 == ut.Fraction(8, -12)
assert frac_1_4 == ut.Fractions(4, 16)
assert float(frac_n2_3) == frac_n2_3
def test_fraction_init(set_up_fractions):
frac_1_2, frac_2_3, frac_n2_3, frac_1_4, frac_0_1 = set_up_fractions
assert frac_1_2.denom == 2
assert frac_2_3.numer == 2
assert frac_n2_3.numer == -2
frac = ut.Fraction(26, 40) # 13/20.
assert frac.numer == 13
assert frac.denom == 20
with pytest.raises(ZeroDivisionError) as excinfo:
ut.Fraction.__init__('Test', 7, 0)
with pytest.raises(TypeError) as excinfo:
ut.Fraction.__init__('Test', 3.5, 2)
def test_fraction_div(set_up_fractions):
frac_1_2, frac_2_3, frac_n2_3, frac_1_4, frac_0_1 = set_up_fractions
assert frac_2_3 / frac_1_4 == ut.Fraction(8, 3)
with pytest.raises(ZeroDivisionError) as excinfo:
frac_2_3 / frac_0_1
def test_fraction_mul(set_up_fractions):
frac_1_2, frac_2_3, frac_n2_3, frac_1_4, frac_0_1 = set_up_fractions
assert frac_2_3 * frac_1_4 == ut.Fraction(1, 6)
def test_fraction_sub(set_up_fractions):
frac_1_2, frac_2_3, frac_n2_3, frac_1_4, frac_0_1 = set_up_fractions
assert frac_2_3 - frac_1_4 == ut.Fraction(5, 12)
def test_fraction_add(set_up_fractions):
frac_1_2, frac_2_3, frac_n2_3, frac_1_4, frac_0_1 = set_up_fractions
assert frac_2_3 + frac_1_4 == ut.Fraction(11, 12)