For these cases, your **FastAPI** application has an attribute `app.dependency_overrides`, it is a simple `dict`.

To override a dependency for testing, you put as a key the original dependency (a function), and as the value, your dependency override (another function).

And then **FastAPI** will call that override instead of the original dependency.

        InetAddress localInetAddress;
        String localHostname;
        Name localName;

        /* Create an address to represent failed lookups and cache forever.
         */

        ADDRESS_CACHE.put(UNKNOWN_NAME, new CacheEntry(UNKNOWN_NAME, UNKNOWN_ADDRESS, FOREVER));

        /* Determine the InetAddress of the local interface
         * if one was not specified.
         */
        localInetAddress = CLIENT.laddr;

     */
    protected static Map<String, String> createItem(final Object label, final Object value) {
        final Map<String, String> map = new HashMap<>(2);
        map.put(Constants.ITEM_LABEL, label != null ? label.toString() : StringUtil.EMPTY);
        map.put(Constants.ITEM_VALUE, value != null ? value.toString() : StringUtil.EMPTY);
        return map;
    }

        when(mockConnection.getConnectTimeout()).thenReturn(2000);
        when(mockConnection.getInstanceFollowRedirects()).thenReturn(true);

        Map<String, List<String>> properties = new HashMap<>();
        properties.put("Accept", Collections.singletonList("application/json"));
        when(mockConnection.getRequestProperties()).thenReturn(properties);
        // Need to mock getRequestProperty as well since it delegates to wrapped connection

                foreignImports,
                null /* artifacts */);

        Map<String, ClassLoader> apiV4Imports = new HashMap<>();
        apiV4Imports.put("org.apache.maven.api", containerRealm);
        apiV4Imports.put("org.slf4j", containerRealm);
        this.maven4ApiRealm = createRealm(API_V4_REALMID, RealmType.Core, null, null, apiV4Imports, null);

	for len(r.current) <= r.recordsRead {
		if r.err != nil {
			return nil, r.err
		}
		// Move to next block
		item, ok := <-r.queue
		if !ok {
			r.err = io.EOF
			return nil, r.err
		}

		r.csvDstPool.Put(r.current)
		r.current = <-item.dst
		r.err = item.err
		r.recordsRead = 0
	}
	csvRecord := r.current[r.recordsRead]
	r.recordsRead++

	// If no column names are set, use _(index)
	if r.columnNames == nil {

	xl := z.serverPools[0].sets[0]

	bucket := "test-bucket"
	object := "test-object"

	err = obj.MakeBucket(ctx, bucket, MakeBucketOptions{})
	if err != nil {
		t.Fatal(err)
	}

	// Put an initial object so it exists
	_, err = obj.PutObject(ctx, bucket, object,
		mustGetPutObjReader(t, bytes.NewReader([]byte("initial-value")),
			int64(len("initial-value")), "", ""), ObjectOptions{})
	if err != nil {

@Deprecated
class MavenBuildTimestampTest {
    @Test
    void testMavenBuildTimestampUsesUTC() {
        Properties interpolationProperties = new Properties();
        interpolationProperties.put("maven.build.timestamp.format", "yyyyMMdd'T'HHmm'Z'");
        MavenBuildTimestamp timestamp = new MavenBuildTimestamp(new Date(), interpolationProperties);
        String formattedTimestamp = timestamp.formattedTimestamp();

    testRequestMethod("POST", true, withOverride = true)
  }

  @Test
  fun requestMethodPutIsNotCached() {
    testRequestMethod("PUT", false)
  }

  @Test
  fun requestMethodPutIsNotCachedEvenWithOverride() {
    testRequestMethod("PUT", false, withOverride = true)
  }

  @Test
  fun requestMethodDeleteIsNotCached() {
    testRequestMethod("DELETE", false)
  }

            }
        }

        if (documentBoost > 0) {
            addBoostValue(map, documentBoost);
        }

        if (!map.containsKey(fessConfig.getIndexFieldDocId())) {
            map.put(fessConfig.getIndexFieldDocId(), systemHelper.generateDocId(map));
        }

        ComponentUtil.getLanguageHelper().updateDocument(map);
    }

    /**