CharMappingItem item = new CharMappingItem(1L, inputs, "output");

        assertEquals("a,b,c=>output", item.toLineString());
    }

    @Test
    public void test_toLineString_withUpdates() {
        String[] inputs = { "old1", "old2" };
        CharMappingItem item = new CharMappingItem(1L, inputs, "oldOutput");

        item.setNewInputs(new String[] { "new1", "new2", "new3" });

        String content = "new1\n" + "new2\n" + "new3\n";

        InputStream is = new ByteArrayInputStream(content.getBytes(StandardCharsets.UTF_8));
        stopwordsFile.update(is);

        assertEquals(3, stopwordsFile.stopwordsItemList.size());
        assertEquals("new1", stopwordsFile.stopwordsItemList.get(0).getInput());
        assertEquals("new2", stopwordsFile.stopwordsItemList.get(1).getInput());

Then you can try and help them solve those questions.

## Ask Questions { #ask-questions }

You can [create a new question](https://github.com/fastapi/fastapi/discussions/new?category=questions) in the GitHub repository, for example to:

    testRotate(new byte[] {1, 2}, -1, new byte[] {2, 1});
    testRotate(new byte[] {1, 2}, -2, new byte[] {1, 2});
    testRotate(new byte[] {1, 2}, 0, new byte[] {1, 2});
    testRotate(new byte[] {1, 2}, 1, new byte[] {2, 1});
    testRotate(new byte[] {1, 2}, 2, new byte[] {1, 2});
    testRotate(new byte[] {1, 2}, 3, new byte[] {2, 1});

    testRotate(new byte[] {1, 2, 3}, -5, new byte[] {3, 1, 2});

    // ? extends T
    assertAssignable(new TypeToken<List<N11>>() {}, new TypeToken<List<? extends N1>>() {});
    assertNotAssignable(new TypeToken<List<N1>>() {}, new TypeToken<List<? extends N11>>() {});
    assertNotAssignable(new TypeToken<List<Number>>() {}, new TypeToken<List<? extends N11>>() {});

    // ? extends Number
    assertAssignable(new TypeToken<List<N1>>() {}, new TypeToken<List<? extends Number>>() {});

    URL url1 = new URL("file:/a");
    URL url2 = new URL("file:/b");
    URLClassLoader grandParent = new URLClassLoader(new URL[] {url1}, null);
    URLClassLoader parent = new URLClassLoader(new URL[] {url2}, grandParent);
    assertThat(ClassPath.getClassPathEntries(new ClassLoader(parent) {}))
        .containsExactly(new File("/a"), grandParent, new File("/b"), parent);
  }

  public void testList() {
    assertFreshInstance(new TypeToken<List<String>>() {});
    assertNotInstantiable(new TypeToken<List<EmptyEnum>>() {});
  }

  public void testArrayList() {
    assertFreshInstance(new TypeToken<ArrayList<String>>() {});
    assertNotInstantiable(new TypeToken<ArrayList<EmptyEnum>>() {});
  }

  public void testLinkedList() {
    assertFreshInstance(new TypeToken<LinkedList<String>>() {});
  }

        suggester.createNextIndex();

        // Index different data in new index (via update alias)
        String[][] readings2 = new String[1][];
        readings2[0] = new String[] { "next" };
        SuggestItem item2 = new SuggestItem(new String[] { "次" }, readings2, new String[] { "content" }, 1, 0, -1, new String[] { "tag1" },
                new String[] { SuggestConstants.DEFAULT_ROLE }, null, SuggestItem.Kind.DOCUMENT);

    }

    // Test execute method with valid FuzzyQuery
    @Test
    public void test_execute_withFuzzyQuery() {
        QueryContext context = new QueryContext("test", false);
        Term term = new Term("title", "fuzzy");
        FuzzyQuery fuzzyQuery = new FuzzyQuery(term);
        float boost = 1.5f;

        QueryBuilder result = fuzzyQueryCommand.execute(context, fuzzyQuery, boost);
        assertNotNull(result);

    }

              result.put(key, value);
              // add extra entries
              result.put(value, key);
            }
            return result;
          }
        };
    LoadingCache<Object, Object> cache = CacheBuilder.newBuilder().build(loader);

    Object[] lookupKeys = new Object[] {new Object(), new Object(), new Object()};
    Map<Object, Object> result = cache.getAll(asList(lookupKeys));