dslFixture.buildFile.assertContents(containsPomGroup(dslFixture))
        dslFixture.buildFile.assertContents(containsPomVersion(dslFixture))
        dslFixture.settingsFile.assertContents(containsPomArtifactId(dslFixture))
    }

    private static pomValuesNotUsed(ScriptDslFixture dslFixture) {
        dslFixture.buildFile.assertContents(not(containsPomGroup(dslFixture)))

        contentsDir.file('docs/javadoc/index.html').assertContents(containsString("Gradle API ${version}"))
        contentsDir.file('docs/javadoc/org/gradle/api/Project.html').assertIsFile()

        // Userguide
        contentsDir.file('docs/userguide/userguide.html').assertIsFile()
        contentsDir.file('docs/userguide/userguide.html').assertContents(containsString("Gradle User Manual</h1>"))

        file("build/tmp/javadoc/javadoc.options").assertContents(containsNormalizedString("-addMultilineStringsOption 'a'\n" +
            "-addMultilineStringsOption 'b'\n" +
            "-addMultilineStringsOption 'c'"))

        file("build/tmp/javadoc/javadoc.options").assertContents(containsNormalizedString("""-addStringsOption 'a b c'"""))

            "src/main/${dsl.id}/buildlogic.${dsl.fileNameFor("${language}-library-conventions")}",
        )

        buildLogicDir.file(commonConventionsPath).assertContents(
            containsText("JavaLanguageVersion.of(${javaMajorVersion})")
        )
    }

    void assertApplicationProjectsSources(String buildFile, String language, String expectedPackagePrefix, String ext) {

        scriptDsl << ScriptDslFixture.SCRIPT_DSLS
    }

    private static void buildFileSeparatesImplementationAndApi(ScriptDslFixture dslFixture, String testFramework = 'junit.jupiter') {
        dslFixture.buildFile.assertContents(
            allOf(
                dslFixture.containsConfigurationDependencyNotation('api', 'libs.commons.math3'),
                dslFixture.containsConfigurationDependencyNotation('implementation', 'libs.guava'),

                }
            }
        """
        def manifestFile = file("build/tmp/jar/MANIFEST.MF")
        def assertCreatedBy = { creator ->
            manifestFile.assertContents(
                containsString("Created-By: $creator")
            )
        }

        when:
        configurationCacheRun ":jar", "-Dcreator=creator1"

        then:

                throw new AssertionError(String.format("%s should not exist:\n%s", this, String.join("\n", descendants)));
            }
        }
        return this;
    }

    public TestFile assertContents(Matcher<String> matcher) {
        assertThat(getText(), matcher);
        return this;
    }

    public TestFile assertIsCopyOf(TestFile other) {
        assertIsFile();
        other.assertIsFile();