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noDuplicateTestHooks

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Diagnostic Category: lint/suspicious/noDuplicateTestHooks

Since: v1.6.0

Sources:

A describe block should not contain duplicate hooks.

Examples

Section titled Examples

Invalid

Section titled Invalid
describe('foo', () => {
  beforeEach(() => {
    // some setup
  });
  beforeEach(() => {
    // some setup
  });
  test('foo_test', () => {
   // some test
  });
});
code-block.js:5:3 lint/suspicious/noDuplicateTestHooks ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Disallow duplicate setup and teardown hooks.
  
    3 │     // some setup
    4 │   });
  > 5 │   beforeEach(() => {
      │   ^^^^^^^^^^^^^^^^^^
  > 6 │     // some setup
  > 7 │   });
      │   ^^
    8 │   test(‘foo_test’, () => {
    9 │    // some test
  
  ℹ Disallow beforeEach duplicacy inside the describe function.
  
describe('foo', () => {
  beforeEach(() => {
    // some setup
  });
  test('foo_test', () => {
    afterAll(() => {
      // some teardown
    });
   afterAll(() => {
     // some teardown
   });
  });
});
code-block.js:9:4 lint/suspicious/noDuplicateTestHooks ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  ✖ Disallow duplicate setup and teardown hooks.
  
     7 │       // some teardown
     8 │     });
   > 9 │    afterAll(() => {
       │    ^^^^^^^^^^^^^^^^
  > 10 │      // some teardown
  > 11 │    });
       │    ^^
    12 │   });
    13 │ });
  
  ℹ Disallow afterAll duplicacy inside the describe function.

Valid

Section titled Valid
describe('foo', () => {
  beforeEach(() => {
    // some setup
  });
  test('foo_test', () => {
    // some test
  });
});
Section titled Related links