run("c", "a").assertTasksExecuted(":a", ":c")
            run("c", "e").assertTasksExecuted(":a", ":c", ":d", ":e")
        }
    }

    def executesMultiProjectsTasksInASingleBuildAndEachTaskAtMostOnce() {
        createDirs("child1", "child2", "child1-2", "child1-2-2")
        settingsFile << "include 'child1', 'child2', 'child1-2', 'child1-2-2'"
        buildFile << """
            task a