def test_compatibility_measure_error():
""" Test if wrong measure raises Exception error """
a = tuple([1.0, 0.8])
b = tuple([2.0, 0.5])
with pytest.raises(Exception) as excinfo:
group_graph.compatibility(a, b, objective_measures=["su", "mu"])
exception_msg = excinfo.value.args[0]
assert exception_msg == "Invalid measure"
def test_compatibility_length():
""" Test if exception message is raised by unequal students' scores """
a = tuple([1.0])
b = tuple([2.0, 0.5])
with pytest.raises(Exception) as excinfo:
group_graph.compatibility(a, b)
exception_msg = excinfo.value.args[0]
assert exception_msg == "Tuples passed to compatibility() must have same size."
def test_compatibility_measure_average():
""" Test if measure of different student scores return an average """
a = [1, 1]
b = [0, 1]
output = group_graph.compatibility(a, b)
expected_output = 1.5
assert output == expected_output
def test_compatibility_objective_weights():
""" Test if objective_weights returns the objective weights of students """
a = [1, 1]
b = [0, 0.5]
objective_weights = (2.0, 1.0)
output = group_graph.compatibility(a, b, objective_weights)
expected_output = 1.75
assert output == expected_output
def test_compatibility_measure_callable():
""" Gives a callable measure to compatibility and tests if it is used """
def score(a, b):
return a + b
a = [1, 1]
b = [0, 0.5]
output = group_graph.compatibility(a, b, objective_measures=[score, score])
assert output == sum([1, 1.5])
def test_compatibility_measure_match():
""" Test if measure of different student scores are both equal """
a = [1, 0]
b = [1, 0.5]
objective_measures = ("match", "match")
output = group_graph.compatibility(a,
b,
objective_measures=objective_measures)
assert output == sum([1, 0])
def test_compatibility_measure_preset():
""" Test all preset measures """
a = [1, 1]
b = [0, 0.5]
output = group_graph.compatibility(a, b, objective_measures=["avg", "avg"])
assert output == sum([0.5, 0.75])
output = group_graph.compatibility(a, b, objective_measures=["max", "max"])
assert output == sum([1, 1])
output = group_graph.compatibility(a, b, objective_measures=["min", "min"])
assert output == sum([0, 0.5])
output = group_graph.compatibility(a,
b,
objective_measures=["match", "match"])
assert output == sum([0, 0])
output = group_graph.compatibility(a,
b,
objective_measures=["diff", "diff"])
assert output == sum([1, 0.5])
def test_compatibility_measure_diff():
""" Test if measure of different student scores returns an absolute value difference """
a = [1, 0]
b = [0, 0.5]
objective_measures = ("diff", "diff")
output = group_graph.compatibility(a,
b,
objective_measures=objective_measures)
expected_output = 1.5
assert output == expected_output
def test_compatibility_measure_min():
""" Test if measure of different student scores return a minimum """
a = [1, 0]
b = [0, 0.5]
objective_measures = ("min", "min")
output = group_graph.compatibility(a,
b,
objective_measures=objective_measures)
expected_output = 0
assert output == expected_output
def test_compatibility_objective_measures():
""" Test if objective_measures returns the objective measure of students """
a = [0, 1]
b = [0.75, 0.75]
objective_measures = ("avg", "match")
output = group_graph.compatibility(a,
b,
objective_measures=objective_measures)
expected_output = 0.375
assert output == expected_output