gitignoreFile.file
        gitignoreFile.text == toPlatformLineSeparators("""ignoredFolder/
${getGeneratedGitignoreContent()}""")
    }

    def "avoid adding duplicated entries when .gitignore file already exists [#entry]"() {
        setup:
        def generator = new GitIgnoreGenerator()
        gitignoreFile << entry

        when:
        generator.generate(settings, null)

        then:
        gitignoreFile.file

        when:
        def gitignoreFile = targetDir.file(".gitignore")
        gitignoreFile << "*.class${System.lineSeparator()}existingIgnores"
        run('init', '--project-name', 'someApp', '--dsl', scriptDsl.id, '--overwrite')

        then:
        gitignoreFile.file
        gitignoreFile.text == toPlatformLineSeparators("""*.class
existingIgnores

            }
        }
    }

    private static Set<String> getGitignoresToAppend(File gitignoreFile) {
        Set<String> result = Sets.newLinkedHashSet(Arrays.asList(".gradle", "build"));
        if (gitignoreFile.exists()) {
            try (BufferedReader reader = new BufferedReader(new FileReader(gitignoreFile))){
                result.removeAll(reader.lines().filter(it -> result.contains(it)).collect(Collectors.toSet()));