def test_fitness_normalized(executor_mock, trace_mock, known_data_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
known_data_mock.existing_predicates[0] = MagicMock(PredicateMetaData)
trace_mock.executed_predicates[0] = 2
trace_mock.false_distances[0] = 0
trace_mock.true_distances[0] = 7.0
assert ff._compute_fitness(trace_mock, known_data_mock) == 0.875
def test_fitness_function_diff(executor_mock, trace_mock, known_data_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
known_data_mock.existing_code_objects[0] = MagicMock(CodeObjectMetaData)
known_data_mock.existing_code_objects[1] = MagicMock(CodeObjectMetaData)
known_data_mock.existing_code_objects[2] = MagicMock(CodeObjectMetaData)
trace_mock.executed_code_objects.add(0)
assert ff._compute_fitness(trace_mock, known_data_mock) == 2.0
def test_coverage_half_code_objects(known_data_mock, executor_mock,
trace_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
known_data_mock.existing_code_objects[0] = MagicMock(CodeObjectMetaData)
known_data_mock.existing_code_objects[1] = MagicMock(CodeObjectMetaData)
trace_mock.executed_code_objects.add(0)
assert ff._compute_coverage(trace_mock, known_data_mock) == 0.5
def test_compute_fitness_values(known_data_mock, executor_mock, trace_mock):
tracer = MagicMock()
tracer.get_known_data.return_value = known_data_mock
executor_mock.tracer.return_value = tracer
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
indiv = MagicMock()
with mock.patch.object(ff, "_run_test_suite") as run_suite_mock:
result = ExecutionResult()
result.execution_trace = trace_mock
run_suite_mock.return_value = [result]
assert ff.compute_fitness_values(indiv) == FitnessValues(0, 1)
run_suite_mock.assert_called_with(indiv)
def test_analyze_traces_has_exception(has_ex):
results = []
result = MagicMock(ExecutionResult)
result.has_test_exceptions.return_value = has_ex
results.append(result)
has_exception, trace = BranchDistanceSuiteFitnessFunction.analyze_traces(
results)
assert has_ex == has_exception
def test_analyze_traces_merge(trace_mock):
results = []
result = MagicMock(ExecutionResult)
result.has_test_exceptions.return_value = False
trace_mock.true_distances[0] = 1
trace_mock.true_distances[1] = 2
trace_mock.executed_predicates[0] = 1
trace_mock.executed_code_objects.add(0)
result.execution_trace = trace_mock
results.append(result)
has_exception, trace = BranchDistanceSuiteFitnessFunction.analyze_traces(
results)
assert not has_exception
assert trace == trace_mock
def test_is_maximisation_function(executor_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
assert not ff.is_maximisation_function()
def test_fitness_neither_covered(executor_mock, trace_mock, known_data_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
known_data_mock.existing_predicates[0] = MagicMock(PredicateMetaData)
assert ff._compute_fitness(trace_mock, known_data_mock) == 2.0
def test_default_fitness(executor_mock, trace_mock, known_data_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
assert ff._compute_fitness(trace_mock, known_data_mock) == 0
def test_coverage_no_branch(known_data_mock, executor_mock, trace_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
known_data_mock.existing_predicates[0] = MagicMock(PredicateMetaData)
assert ff._compute_coverage(trace_mock, known_data_mock) == 0.0
def test_coverage_none(known_data_mock, executor_mock, trace_mock):
ff = BranchDistanceSuiteFitnessFunction(executor_mock)
assert ff._compute_coverage(trace_mock, known_data_mock) == 1.0
def test_worst_fitness(known_data_mock):
known_data_mock.existing_code_objects[0] = MagicMock(CodeObjectMetaData)
known_data_mock.existing_predicates[0] = MagicMock(PredicateMetaData)
assert BranchDistanceSuiteFitnessFunction.get_worst_fitness(
known_data_mock) == 3.0
def test_analyze_traces_empty():
results = []
has_exception, trace = BranchDistanceSuiteFitnessFunction.analyze_traces(
results)
assert not has_exception
assert trace == ExecutionTrace()