pi-lens/rules/tree-sitter-queries/java/mockito-initialized.yml

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# Mockito Initialized
# Detects annotated Mockito objects that may not be initialized
id: mockito-initialized
name: Annotated Mockito Objects Should Be Initialized
severity: error
category: reliability
defect_class: correctness
inline_tier: blocking
language: java

message: "@Mock/@InjectMocks object should be initialized with MockitoAnnotations.openMocks()"

description: |
  @Mock, @Spy, @Captor, @InjectMocks fields must be initialized
  before use. Call MockitoAnnotations.openMocks(this) in @Before
  or use MockitoJUnitRunner.

  ✅ FIX: Add initialization in @Before method

  ```java
  @Before
  public void setUp() {
      MockitoAnnotations.openMocks(this);  // GOOD
  }
  ```

query: |
  (field_declaration
    (modifiers
      (annotation
        name: (identifier) @ANNOT (#match? @ANNOT "^(Mock|Spy|Captor|InjectMocks)$")))
    (variable_declarator
      name: (identifier) @FIELD))

metavars:
  - ANNOT
  - FIELD

post_filter: missing_mockito_init

tags:
  - reliability
  - java
  - mockito
  - testing

examples:
  bad: |
    @Mock
    private Service service;  // BAD - not initialized

    @Test
    public void test() {
        service.doSomething();  // NullPointerException!
    }

  good: |
    @Mock
    private Service service;

    @Before
    public void setUp() {
        MockitoAnnotations.openMocks(this);  // GOOD
    }

has_fix: false