def test_class_buoyancy_should_report_correct_buoyancy():
b = Buoyancy()
expected_buoyancy = 10052
buoyancy = b.calculate_buoyancy(1.0, 1025)
assert np.isclose(expected_buoyancy,
buoyancy,
rtol=1e-1,
atol=1e-2,
equal_nan=False)
def test_class_buoyancy_should_return_buoyancy_for_property():
b = Buoyancy()
expected_buoyancy = 10052
assert np.isclose(expected_buoyancy,
b.buoyancy,
rtol=1e-03,
atol=1e-05,
equal_nan=False)
def test_class_buoyancy_should_initialize_with_given_parameters():
b = Buoyancy(volume=1.2, density=1024)
assert 1024 == b._density
assert 1.2 == b._volume
def test_calculate_buoyancy_should_fail_for_invalid_density():
b = Buoyancy()
with pytest.raises(ValueError):
b.calculate_buoyancy(100, 'b')
def test_calculate_buoyancy_should_fail_for_invalid_volume():
b = Buoyancy()
with pytest.raises(ValueError):
b.calculate_buoyancy('a', 10)
def test_class_buoyancy_should_set_density_for_valid_number():
b = Buoyancy()
b.density = 1100.0
assert 1100.0 == b.density
def test_class_buoyancy_should_return_volume_through_property():
b = Buoyancy()
assert 1.0 == b.volume
def test_class_buoyancy_density_setter_should_fail_for_non_numeric():
b = Buoyancy()
with pytest.raises(ValueError):
b.density = 'a'
def test_class_buoyancy_should_return_density_through_property():
b = Buoyancy()
assert 1025.0 == b.density