dependsOn 'compileJava'
                commandLine '${fileToPath(Jvm.current().javaExecutable)}', '-cp', '${fileToPath(file('build/classes/java/main'))}', 'Block'
            }

            task projectExecTask {
                dependsOn 'compileJava'
                doLast {

        run("installDist")

        def out = new ByteArrayOutputStream()
        def executer = new ScriptExecuter()
        executer.workingDir = testDirectory
        executer.standardOutput = out
        executer.commandLine = "build/install/test/bin/test"
        def result = executer.run()
        then:
        result.assertNormalExitValue()
        out.toString() == TextUtil.toPlatformLineSeparators("all good\n")
    }

def login = tasks.register('login', Exec) {
    def loginProvider = providers.credentials(PasswordCredentials, 'login')
    inputs.property('credentials', loginProvider)

    commandLine = ['sh', 'login.sh']
    doFirst {
        def loginCredentials = loginProvider.get()
        standardInput = new ByteArrayInputStream("$loginCredentials.username\n$loginCredentials.password".getBytes())
    }
}

tasks.register('doAuthenticated') {
    dependsOn(login)

        return execute(["bash"] as Object[], new ByteArrayInputStream(commands.getBytes()))
    }

    private String execute(Object[] commandLine, InputStream input) {
        def output = new ByteArrayOutputStream()
        def e = TestFiles.execHandleFactory().newExec()
                .commandLine(commandLine)
                .redirectErrorStream()
                .setStandardInput(input)
                .setStandardOutput(output)

     * @return this
     */
    ExecSpec commandLine(Object... args);

    /**
     * Sets the full command line, including the executable to be executed plus its arguments.
     *
     * @param args the command plus the args to be executed
     * @return this
     */
    ExecSpec commandLine(Iterable<?> args);

    /**
     * Adds arguments for the command to be executed.
     *

    ExternalProcessFixture(TestFile testDirectory) {
        this.testDirectory = testDirectory
    }

    private String getCommandLineAsVarargLiterals() {
        return ShellScript.cmdToVarargLiterals(testExecutable.commandLine)
    }

    interface Snippets {
        abstract String getBody()

        abstract String getImports()
    }

    interface SnippetsFactory {

val login = tasks.register<Exec>("login") {
    val loginProvider = providers.credentials(PasswordCredentials::class.java, "login")
    inputs.property("credentials", loginProvider)

    commandLine = listOf("sh", "login.sh")
    doFirst {
        val loginCredentials = loginProvider.get()
        standardInput = java.io.ByteArrayInputStream("${loginCredentials.username}\n${loginCredentials.password}".toByteArray())
    }
}

        cleanTemporaryDir(fsOps, checkoutDir)
        execOps.exec {
            commandLine = ["git", "clone", "--no-checkout", remoteUri, checkoutDir.absolutePath]
            errorOutput = System.out
        }
        execOps.exec {
            commandLine = ["git", "checkout", ref]
            workingDir = checkoutDir
            errorOutput = System.out
        }

    def "Project.exec output is grouped with its task output"() {
        given:
        buildFile << """
            task run {
                doLast {
                    project.exec {
                        commandLine ${echo(EXPECTED_OUTPUT)}
                    }
                }
            }
        """

        when:
        executer.withConsole(consoleType)
        succeeds("run")

        then:

    @Inject
    abstract ExecOperations getExecOperations()

    String obtain() {
        ByteArrayOutputStream output = new ByteArrayOutputStream()
        execOperations.exec {
            it.commandLine "git", "--version"
            it.standardOutput = output
        }
        return new String(output.toByteArray(), Charset.defaultCharset())
    }
}
// end::value-source[]

// tag::create-provider[]