if (tasks == null) {
            tasks = new LinkedHashSet<>(grepTasks(TASK_PATTERN));
        }
        return tasks;
    }

    @Override
    public ExecutionResult assertTasksExecutedInOrder(Object... taskPaths) {
        Set<String> allTasks = TaskOrderSpecs.exact(taskPaths).getTasks();
        assertTasksExecuted(allTasks);
        assertTaskOrder(taskPaths);
        return this;
    }

                }
            }

            task b {
                inputs.files tasks.a.outputs.files
            }
        """

        expect:
        succeeds "b" assertTasksExecutedInOrder ":a", ":b"
    }

    def "task is out of date when property added"() {
        buildFile << """
task someTask {
    inputs.property("a", "value1")
    outputs.file "out"