.changedTo(36, "4.4-rc-1")
        .changedTo(48, "4.5-rc-1")
        .changedTo(51, "4.5.1")
        .changedTo(53, "4.6-rc-1")
        .changedTo(56, "4.7-rc-1")
        .changedTo(58, "4.8-rc-1")
        .changedTo(63, "4.10-rc-1")
        .changedTo(68, "5.0-milestone-1")
        .changedTo(69, "5.0-rc-1")
        .changedTo(71, "5.3-rc-1")
        .changedTo(79, "6.0-rc-1")

    }

    def "throws exception if cache version is not greater than previous ones"() {
        when:
        CacheVersionMapping.introducedIn("1.0")
            .changedTo(3, "1.1")
            .changedTo(2, "1.2")

        then:
        def e = thrown(IllegalArgumentException)
        e.message.contains("cache version (2) must be greater than all previous versions")
    }

        return new Builder().changedTo(1, gradleVersion);
    }

    public static class Builder {

        private final NavigableMap<GradleVersion, Integer> versions = new TreeMap<>();

        private Builder() {
        }

        public Builder incrementedIn(String minGradleVersion) {
            return changedTo(versions.get(versions.lastKey()) + 1, minGradleVersion);
        }

    private static final CacheVersionMapping CACHE_VERSION_MAPPING = introducedIn("2.2")
        .incrementedIn("3.2-rc-1")
        .incrementedIn("3.5-rc-1")
        .changedTo(8, "6.5-rc-1")
        .incrementedIn("7.1")
        .build();
    @VisibleForTesting
    static final String CACHE_NAME = "jars";
    @VisibleForTesting

        assert mapping[0][0] == 1
        def builder = CacheVersionMapping.introducedIn(mapping[0][1])
        mapping.tail().each {
            builder.changedTo(it[0], it[1])
        }
        return builder.build(parentCacheVersion)
    }

	{Name: "tlsrsakex", Package: "crypto/tls", Changed: 22, Old: "1"},
	{Name: "tlsunsafeekm", Package: "crypto/tls", Changed: 22, Old: "1"},
	{Name: "winreadlinkvolume", Package: "os", Changed: 22, Old: "0"},
	{Name: "winsymlink", Package: "os", Changed: 22, Old: "0"},
	{Name: "x509keypairleaf", Package: "crypto/tls", Changed: 23, Old: "0"},
	{Name: "x509negativeserial", Package: "crypto/x509", Changed: 23, Old: "1"},

[!GOARCH:amd64] env GOARCH=amd64

go env -changed GOOS
[GOOS:windows] stdout 'set GOOS=linux'
[!GOOS:windows] stdout 'GOOS=''windows'''
go env -changed GOARCH
[GOARCH:amd64] stdout 'set GOARCH=arm64|GOARCH=''arm64'''
[!GOARCH:amd64] stdout 'set GOARCH=amd64|GOARCH=''amd64'''

go env -changed -json GOOS
[GOOS:windows] stdout '"GOOS": "linux"'
[!GOOS:windows] stdout '"GOOS": "windows"'
go env -changed -json GOARCH

        }
    }

    //asserts none of the files changed/added since last snapshot
    void noneRecompiled() {
        recompiledFiles([])
    }

    //asserts file changed/added since last snapshot
    void recompiledFile(File file) {
        recompiledFiles([file])
    }

    //asserts files changed/added since last snapshot
    void recompiledFiles(File... files) {

    private boolean changed;
    private int unnamedPropertyCounter;

    private FilePropertyContainer() {
    }

    public static <T extends TaskFilePropertyBuilder & TaskPropertyRegistration> FilePropertyContainer<T> create() {
        return new FilePropertyContainer<T>();
    }

    public void add(T property) {
        properties.add(property);
        changed = true;
    }

    @Override

        def removed = target.file("source.txt")
        removed.delete()
        def changed = target.file("dir/another.txt")
        changed << "changed!"

        when:
        gitVcs.populate(target, repoHead, repoSpec)

        then:
        removed.text == "Hello world!"
        changed.text == "Goodbye world!"
    }

    // commit() method seems to leak files