def test_aGoalOrDecomposedWithTwoTasksMayNotBeAchievable():
goal = Goal(Decomposition.OR)
task1 = Task()
task2 = Task()
current = Context("C1")
fullContext = []
fullContext.append(current)
qc = QualityConstraint(current, CommonMetrics.SECONDS, 15,
Comparison.LESS_OR_EQUAL_TO)
task1.addApplicableContext(current)
task1.setProvidedQuality(current, CommonMetrics.SECONDS, 16)
task2.addApplicableContext(current)
task2.setProvidedQuality(current, CommonMetrics.SECONDS, 17)
goal.addDependency(task1)
goal.addDependency(task2)
goal.setIdentifier("Root")
goal.addApplicableContext(current)
interp = Interpretation()
interp.addQualityConstraint(qc)
plan = goal.isAchievable(fullContext, interp)
assert goal.decomposition is Decomposition.OR
assert plan is None
def test_aGoalAndDecomposedWithTwoTasksMayBeAchievable():
goal = Goal(Decomposition.AND)
task1 = Task()
task2 = Task()
current = Context("C1")
fullContext = []
fullContext.append(current)
qc = QualityConstraint(current, CommonMetrics.SECONDS, 15,
Comparison.LESS_OR_EQUAL_TO)
interp = Interpretation()
interp.addQualityConstraint(qc)
task1.addApplicableContext(current)
task1.setProvidedQuality(current, CommonMetrics.SECONDS, 13)
task2.addApplicableContext(current)
task2.setProvidedQuality(current, CommonMetrics.SECONDS, 11)
goal.addDependency(task1)
goal.addDependency(task2)
goal.setIdentifier("Root")
goal.addApplicableContext(current)
plan = goal.isAchievable(fullContext, interp)
assert 2 == len(plan.getTasks())