Neste caso, você pode sobrepor (*override*) a dependência que chama o provedor, e utilizar uma dependência customizada que retorna um *mock* do usuário, apenas para os seus testes.

### Utilize o atributo `app.dependency_overrides` { #use-the-app-dependency-overrides-attribute }

      @Override
      public Set<N> predecessors(N node) {
        return AbstractBaseGraph.this.predecessors(node);
      }

      @Override
      public Set<N> successors(N node) {
        return AbstractBaseGraph.this.successors(node);
      }

      @Override
      public Set<EndpointPair<N>> incidentEdges(N node) {
        return AbstractBaseGraph.this.incidentEdges(node);
      }

      @Override

    private FessUserTimeZoneProcessProvider provider;
    private RequestManager requestManager;

    @Override
    protected void setUp(TestInfo testInfo) throws Exception {
        super.setUp(testInfo);
        provider = new FessUserTimeZoneProcessProvider();
        requestManager = createMockRequestManager();
    }

    @Override
    protected void tearDown(TestInfo testInfo) throws Exception {
        provider = null;

/**
 * Manages a dictionary file for stemmer overrides.
 * This class handles reading, parsing, and updating files that contain
 * stemmer override rules, where each rule maps an input word to an
 * output stem. The file format is expected to be `input => output`.
 *
 * The class provides methods for retrieving, adding, updating, and
 * deleting stemmer override items, as well as reloading the dictionary
 * from its source file.

      @Override
      public Set<N> predecessors(N node) {
        return AbstractNetwork.this.predecessors(node);
      }

      @Override
      public Set<N> successors(N node) {
        return AbstractNetwork.this.successors(node);
      }

      // DO NOT override the AbstractGraph *degree() implementations.
    };
  }

  @Override
  public int degree(N node) {
    if (isDirected()) {

      this.mapGenerator = mapGenerator;
    }

    @Override
    public SampleElements<Entry<K, V>> samples() {
      return mapGenerator.samples();
    }

    @Override
    public Set<Entry<K, V>> create(Object... elements) {
      return mapGenerator.create(elements).entrySet();
    }

    @Override
    public Entry<K, V>[] createArray(int length) {

      this.end = end;
    }

    @Override
    public int size() {
      return end - start;
    }

    @Override
    public boolean isEmpty() {
      return false;
    }

    @Override
    public Short get(int index) {
      checkElementIndex(index, size());
      return array[start + index];
    }

    @Override
    public boolean contains(@Nullable Object target) {

# 用覆寫測試相依 { #testing-dependencies-with-overrides }

## 在測試期間覆寫相依 { #overriding-dependencies-during-testing }

有些情境你可能想在測試時覆寫（override）某個相依（dependency）。

你不希望執行原本的相依（以及它可能具有的任何子相依）。

相反地，你想提供一個只在測試期間使用的不同相依（可能只在特定測試中），並回傳一個可以在原本相依值被使用之處使用的值。

### 使用情境：外部服務 { #use-cases-external-service }

例如你有一個需要呼叫的外部驗證提供者。

你傳送一個 token，它會回傳一個已驗證的使用者。

這個提供者可能按每個請求收費，而且呼叫它可能比在測試中使用固定的模擬使用者多花一些時間。

你大概只想對外部提供者測試一次，而不需要在每個測試都呼叫它。

    public String trimTrailingFrom(CharSequence sequence) {
      return sequence.toString();
    }

    @Override
    public int countIn(CharSequence sequence) {
      checkNotNull(sequence);
      return 0;
    }

    @Override
    public CharMatcher and(CharMatcher other) {
      checkNotNull(other);
      return this;
    }

    @Override

      safeMin = Character.MAX_VALUE;
    }
    this.safeMin = safeMin;
    this.safeMax = safeMax;
  }

  /*
   * This is overridden to improve performance. Rough benchmarking shows that this almost doubles
   * the speed when processing strings that do not require any escaping.
   */
  @Override
  public final String escape(String s) {
    checkNotNull(s); // GWT specific check (do not optimize).