def "calculates available characters when reading and writing"() {
        given:
        def byteBuffer = new StreamByteBuffer(8)
        def out = byteBuffer.outputStream

        when:
        out.write("1234567890123".bytes)
        then:
        byteBuffer.totalBytesUnread() == 13

        when:
        byteBuffer.readAsString()
        then:
        byteBuffer.totalBytesUnread() == 0

        when:

        assertEquals("******@****.***", fessConfig.getLdapSecurityPrincipal("1234567890"));
        assertEquals("12345678901@fess.codelibs.local", fessConfig.getLdapSecurityPrincipal("12345678901"));
    }

    public void test_maxUsernameLength10() throws IOException {
        FessProp.propMap.clear();
        FessConfig fessConfig = new FessConfig.SimpleImpl() {

        assertEquals("1234567...", documentHelper.getDigest(responseData, "1234567890123456789", dataMap, 10));
        assertEquals("1234567...", documentHelper.getDigest(responseData, "12345678901", dataMap, 10));
        assertEquals("1234567890", documentHelper.getDigest(responseData, "1234567890", dataMap, 10));
        assertEquals("123456789", documentHelper.getDigest(responseData, "123456789", dataMap, 10));

	fakeOS := m.osInterface.(*containertest.FakeOS)
	podStateProvider := m.containerGC.podStateProvider.(*fakePodStateProvider)

	// pod log directories without corresponding pods should be removed.
	files := []string{"123", "456", "789", "012", "name_namespace_321", "name_namespace_654"}
	podLogsDirectory := "/var/log/pods"
	removed := []string{
		filepath.Join(podLogsDirectory, "789"),
		filepath.Join(podLogsDirectory, "012"),

また、依存関数の中で`with`や`async with`文を使用することによって`yield`を持つ **FastAPI** の依存関係の中でそれらを使用することができます:

```Python hl_lines="1 2 3 4 5 6 7 8 9 13"
{!../../../docs_src/dependencies/tutorial010.py!}
```

!!! tip "豆知識"
    コンテキストマネージャを作成するもう一つの方法はwithです:

	{"% .3X", -1 - 2i, "(-0X1.000P+00-0X1.000P+01i)"},
	{"%+.3g", 1 + 2i, "(+1+2i)"},
	{"%+.3g", complex64(1 + 2i), "(+1+2i)"},
	{"%#g", 1 + 2i, "(1.00000+2.00000i)"},
	{"%#g", 123456 + 789012i, "(123456.+789012.i)"},
	{"%#g", 1e-10i, "(0.00000+1.00000e-10i)"},
	{"%#g", -1e10 - 1.11e100i, "(-1.00000e+10-1.11000e+100i)"},
	{"%#.0f", 1.23 + 1.0i, "(1.+1.i)"},
	{"%#.0e", 1.23 + 1.0i, "(1.e+00+1.e+00i)"},