}

            task myTask(type: MyTask) {
                input = mkdir(inputDir)
                output = file("build/output.txt")
            }
        """
        String myTask = ':myTask'

        when:
        file("inputDir1/child") << "inputFile1"
        run myTask, '-PinputDir=inputDir1'
        then:
        executedAndNotSkipped(myTask)

        when:

        then:
        skipped(":myTask")
        file("build/myTask.txt").text == "value1"

        when:
        fails('myTask', "-Pmy=trash")
        then:
        failureDescriptionContains("Type 'MyTask' property 'strings' doesn't have a configured value.")

        when:
        fails('myTask')
        then:

            error(missingNormalizationStrategyConfig { type('MyTask').property('fileProp').annotatedWith('InputFile') }, 'validation_problems', 'missing_normalization_annotation'),

        given:
        buildFile << """
            abstract class MyTask extends DefaultTask {

                @Input abstract Property<String> getMessage()

                @TaskAction def action() {
                    println(message.get())
                }
            }
            tasks.register("myTask", MyTask) {
                // use an undeclared input so we can test --refresh-dependencies

            }

            task myTask(type: MyTask) {
                conventionMapping('archiveName') { 'not something' }
                archiveFileName.convention("something")
            }
        """

        expect: 'convention mapping is ignored'
        configurationCacheRun 'myTask'

        and: 'convention mapping is ignored just the same'
        configurationCacheRun 'myTask'
    }

            tasks.register("myTask") {
              ${variableDefinition} inputFile = file("input/marker")
              inputs.files(inputFile)
              outputs.files("build/marker")
              doLast {
                println("value: " + inputFile.${readTextMethod})
              }
            }
        """

        when:
        succeeds(":myTask")
        then:

        }
        executer.requireDaemon()
    }

    def "emits build operations when watching is enabled"() {
        when:
        withWatchFs().run "myTask"
        then:
        executedAndNotSkipped(":myTask")
        def startedResult = buildStartedResult()
        startedResult.watchingEnabled
        startedResult.startedWatching
        startedResult.statistics == null

              }
            }

            tasks.register("myTask", MyTask.class)
        '''

        when:
        succeeds('myTask', '--serial=1234', '--serialNumber=4321')

        then:
        result.assertTaskExecuted(':myTask').assertOutputContains('Serial: 4321')

        when:
        succeeds('myTask', '--serialNumber=4321', '--serial=1234')

        then:

package org.example

        builder.sourceFile("com/example/MyTask.java") << """
            package com.example;

            import org.gradle.api.*;
            import org.gradle.api.tasks.*;

            public class MyTask extends DefaultTask {
                public MyTask() {
                    getInputs().file("somefile");
                    getInputs().files("afile", "anotherfile");