assertArrays(new String[] { "ja" }, fessConfig.normalizeQueryLanguages(new String[] { "ja-jp" }));
        assertArrays(new String[] { "ja" }, fessConfig.normalizeQueryLanguages(new String[] { "ja_JP" }));
        assertArrays(new String[] { "ja", "zh-cn" }, fessConfig.normalizeQueryLanguages(new String[] { "ja", "zh" }));

        // Test that method is case sensitive (as per implementation)
        assertNull(languageHelper.getSupportedLanguage("JA"));
        assertNull(languageHelper.getSupportedLanguage("EN"));
        assertEquals("ja", languageHelper.getSupportedLanguage("ja"));
        assertEquals("en", languageHelper.getSupportedLanguage("en"));
    }

    @Test
    public void test_updateDocument_emptyLangFields() {

        value = " ja ";
        assertEquals("ja", systemHelper.normalizeLang(value));

        value = "ja-JP";
        assertEquals("ja", systemHelper.normalizeLang(value));

        value = "ja_JP";
        assertEquals("ja", systemHelper.normalizeLang(value));

        value = "ja_JP_AAA";
        assertEquals("ja", systemHelper.normalizeLang(value));

        value = "zh";

    @Test
    public void test_serializeParameters() {
        RequestParameter[] params = new RequestParameter[] { new RequestParameter("q", new String[] { "test" }),
                new RequestParameter("lang", new String[] { "en", "ja" }) };
        String encoded = searchHelper.serializeParameters(params);
        assertNotNull(encoded);
        byte[] compressed = Base64.getUrlDecoder().decode(encoded);

        value.clear();

        List<String> keys = Arrays.asList("test_2", "test_0", "lang", "test_1");
        value.put(keys.get(0), true);
        value.put(keys.get(1), 1000);
        value.put(keys.get(2), "ja");
        value.put(keys.get(3), "str");
        docMap = new DocMap(value);
        assertFalse(docMap.isEmpty());

        Set<Map.Entry<String, Object>> actual = docMap.entrySet();

        assertTrue(fieldSet.contains("field3"));
    }

    @Test
    public void testMerge_languages() {
        SuggestItem item1 = createItemWithLanguages("text", "en", "ja");
        SuggestItem item2 = createItemWithLanguages("text", "ja", "zh");

        SuggestItem merged = SuggestItemMerger.merge(item1, item2);

        String[] languages = merged.getLanguages();

        AnalyzerNormalizer normalizer = new AnalyzerNormalizer(runner.client(), suggester.settings());

        String result = normalizer.normalize("test", "content", "en", "ja");

        assertNotNull(result);
    }

    @Test
    public void test_normalizeEmptyString() throws Exception {
        AnalyzerNormalizer normalizer = new AnalyzerNormalizer(runner.client(), suggester.settings());

    <img src="https://img.shields.io/pypi/pyversions/fastapi.svg?color=%2334D058" alt="Supported Python versions">
</a>
</p>

---

**ドキュメント**: [https://fastapi.tiangolo.com/ja](https://fastapi.tiangolo.com/ja)

**ソースコード**: [https://github.com/fastapi/fastapi](https://github.com/fastapi/fastapi)

---

FastAPI は、Python の標準である型ヒントに基づいて Python で API を構築するための、モダンで、高速（高パフォーマンス）な Web フレームワークです。

主な特徴:

        assertTrue(readingAnalyzer.contains("_en") || readingAnalyzer.equals(AnalyzerSettings.READING_ANALYZER));

        String normalizeAnalyzer = settings.analyzer().getNormalizeAnalyzerName("", "ja");
        assertTrue(normalizeAnalyzer.contains("_ja") || normalizeAnalyzer.equals(AnalyzerSettings.NORMALIZE_ANALYZER));
    }

    @Test
    public void test_getAnalyzerName_withUnsupportedLanguage() {

### Target language

Translate to Japanese (日本語).

Language code: ja.

### Grammar and tone

- Use polite, instructional Japanese (です/ます調).
- Keep the tone concise and technical (match existing Japanese FastAPI docs).

### Headings

- Follow the existing Japanese style: short, descriptive headings (often noun phrases), e.g. 「チェック」.
- Do not add a trailing period at the end of headings.

### Quotes