outputContains("Configuration: some.property.1 = 1")
        outputDoesNotContain("Configuration: some.property.2 = 2")
        problems.assertResultHasProblems(result) {
            withNoInputs()
        }

        when:
        configurationCacheRun("-Psome.property.1=1", "print")

        then:
        configurationCache.assertStateLoaded()

    }

    HasConfigurationCacheProblemsSpec withInput(String prefix) {
        inputs = inputs.expect(startsWith(prefix))
        return this
    }

    HasConfigurationCacheProblemsSpec withNoInputs() {
        inputs = inputs.expectNone()
        return this
    }

    HasConfigurationCacheProblemsSpec ignoringUnexpectedInputs() {
        inputs = inputs.ignoreUnexpected()
        return this

        configurationCacheRun "printString"

        then:
        output.count("The string is absent") == 1
        configurationCache.assertStateStored()
        problems.assertResultHasProblems(result) {
            withNoInputs()
        }

        when:
        printString "alice"

        then:
        output.count("The string is alice") == 1
        configurationCache.assertStateLoaded()

        when: