where:
        type                             | tasksInput             | expectedOutput
        "Task"                           | "copy1.get()"          | "[copy1]"
        "TaskProvider"                   | "copy1"                | "[copy1]"
        "Array[Task, TaskProvider]"      | "copy1.get(), copy2"   | "[copy1, copy2]"
        "Collection(Task, TaskProvider)" | "[copy1.get(), copy2]" | "[copy1, copy2]"
    }

Wrongly declared task inputs can lead to cache misses especially when containing volatile data or absolute paths.
(See <<incremental_build.adoc#sec:task_inputs_outputs,the section called "Task inputs and outputs">> on what should be declared as inputs and outputs.)

NOTE: The task path is _not_ an input to the build cache key.

    private Object[] useOverlappingOutputFiles() {
        buildFile << """
            task first(type: OutputFileTask)
            task second(type: OutputFileTask) {
                // second's message needs to be different so we don't detect the file has unchanged
                message = "Generated by task " + path
            }
            task cleanSecond(type: Delete) {
                delete second
            }

			// N.B. No need to add the region to a task; the EventRegionBegin already handled it.
		} else {
			// This is an "end" without a start. Just fabricate the region now.
			sd = &UserRegionSummary{Name: r.Type, TaskID: r.Task}
			// Associate the region and current goroutine to the task.
			task := s.getOrAddTask(r.Task)
			task.Goroutines[g.ID] = g
			task.Regions = append(task.Regions, sd)
		}

            task.setGroup(PLUGIN_DEVELOPMENT_GROUP);
            task.setDescription(GENERATE_PLUGIN_DESCRIPTORS_TASK_DESCRIPTION);
            task.getDeclarations().set(extension.getPlugins());
            task.getOutputDirectory().set(project.getLayout().getBuildDirectory().dir(task.getName()));
        });

        System.clearProperty(systemProp)
        configurationCacheRun fixture.task

        System.clearProperty(systemProp)
        configurationCacheRun fixture.task

        then:
        configurationCache.assertStateLoaded()

        when:
        System.clearProperty(systemProp)
        configurationCacheRun fixture.task, "-D$systemProp=overridden value"

        then:

                // logging done from task-a logger during task-b execution will result in logging linked to task-b
                def allLoggingProgress = allExecutionOpTaskProgresses.find { it.detailsType == LogEvent && it.details.message == "log all task via :project-${projectCount}:myTask$taskCount logger" }
                assert allLoggingProgress.details.logLevel == 'LIFECYCLE'
            }
        }

        run("merge")

        then:
        output.count("calculating value") == 2 // once for task dependency calculation, once for task execution
    }

    def "task @InputFiles file collection provider is called once only when task executes"() {
        taskTypeWithInputFileCollection()
        buildFile """
            task merge(type: InputFilesTask) {
                outFile = file("out.txt")

            ${mavenCentralRepository()}

            task other
            task broken(type: SomeTask)
        """

        when:
        configurationCacheRunLenient "broken"

        then:
        problems.assertResultHasProblems(result) {
            withTotalProblemsCount(6)
            withUniqueProblems(

    }

    def "task output caching key is exposed by default"() {
        when:
        buildFile << customTaskCode('foo', 'bar')
        succeeds('customTask')

        then:
        operations.hasOperation(SnapshotTaskInputsBuildOperationType)
    }

    def "handles task with no outputs"() {
        when:
        buildScript """
            task noOutputs {
                doLast {}