axe-core/test/integration/virtual-rules/image-alt.js at develop · GeneratorX16/axe-core · GitHub

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describe('image-alt virtual-rule', () => {
  it('should pass for alt', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        alt: 'foobar'
      }
    });

    assert.lengthOf(results.passes, 1);
    assert.lengthOf(results.violations, 0);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should pass for empty alt', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        alt: ''
      }
    });

    assert.lengthOf(results.passes, 1);
    assert.lengthOf(results.violations, 0);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should pass for aria-label', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        'aria-label': 'foobar'
      }
    });

    assert.lengthOf(results.passes, 1);
    assert.lengthOf(results.violations, 0);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should incomplete for aria-labelledby', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        'aria-labelledby': 'foobar'
      }
    });

    assert.lengthOf(results.passes, 0);
    assert.lengthOf(results.violations, 0);
    assert.lengthOf(results.incomplete, 1);
  });

  it('should pass for title', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        title: 'foobar'
      }
    });

    assert.lengthOf(results.passes, 1);
    assert.lengthOf(results.violations, 0);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should pass for role=presentation', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        role: 'presentation'
      }
    });

    assert.lengthOf(results.passes, 1);
    assert.lengthOf(results.violations, 0);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should pass for role=none', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        role: 'none'
      }
    });

    assert.lengthOf(results.passes, 1);
    assert.lengthOf(results.violations, 0);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should fail when alt is missing', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {}
    });

    assert.lengthOf(results.passes, 0);
    assert.lengthOf(results.violations, 1);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should fail when alt contains only whitespace', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        alt: ' \t   \n   '
      }
    });

    assert.lengthOf(results.passes, 0);
    assert.lengthOf(results.violations, 1);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should fail when aria-label is empty', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        'aria-label': ''
      }
    });

    assert.lengthOf(results.passes, 0);
    assert.lengthOf(results.violations, 1);
    assert.lengthOf(results.incomplete, 0);
  });

  it('should fail when title is empty', () => {
    const results = axe.runVirtualRule('image-alt', {
      nodeName: 'img',
      attributes: {
        title: ''
      }
    });

    assert.lengthOf(results.passes, 0);
    assert.lengthOf(results.violations, 1);
    assert.lengthOf(results.incomplete, 0);
  });
});