osInitMime = initMimePlan9
}

func initMimePlan9() {
	for _, filename := range typeFiles {
		loadMimeFile(filename)
	}
}

var typeFiles = []string{
	"/sys/lib/mimetype",
}

func initMimeForTests() map[string]string {
	typeFiles = []string{"testdata/test.types.plan9"}
	return map[string]string{
		".t1":  "application/test",
		".t2":  "text/test; charset=utf-8",
		".pNg": "image/png",
	}
}

		// handle it here by ignoring that registry setting.
		if name == ".js" && (v == "text/plain" || v == "text/plain; charset=utf-8") {
			continue
		}

		setExtensionType(name, v)
	}
}

func initMimeForTests() map[string]string {
	return map[string]string{
		".PnG": "image/png",
	}

	once = sync.Once{}
	// initMimeForTests returns the platform-specific extension =>
	// type tests. On Unix and Plan 9, this also tests the parsing
	// of MIME text files (in testdata/*). On Windows, we test the
	// real registry on the machine and assume that ".png" exists
	// there, which empirically it always has, for all versions of
	// Windows.
	typeTests := initMimeForTests()

	for ext, want := range typeTests {

		}
	}

	// Fallback if no system-generated mimetype database exists.
	for _, filename := range typeFiles {
		loadMimeFile(filename)
	}
}

func initMimeForTests() map[string]string {
	mimeGlobs = []string{""}
	typeFiles = []string{"testdata/test.types"}
	return map[string]string{
		".T1":  "application/test",
		".t2":  "text/test; charset=utf-8",
		".png": "image/png",