text: 'use strict';
  
  describe('should only run .only test in this bdd suite', function () {
    it('should not run this test', function () {
      (0).should.equal(1, 'this test should have been skipped');
    });
    it.only('should run this test', function () {
      (0).should.equal(0, 'this .only test should run');
    });
    it('should run this test, not (includes the title of the .only test)', function () {
      (0).should.equal(1, 'this test should have been skipped');
    });
  });
  
  describe('should not run this suite', function () {
    it('should not run this test', function () {
      (true).should.equal(false);
    });
  
    it('should not run this test', function () {
      (true).should.equal(false);
    });
  
    it('should not run this test', function () {
      (true).should.equal(false);
    });
  });
  
  describe.only('should run all tests in this bdd suite', function () {
    it('should run this test #1', function () {
      (true).should.equal(true);
    });
  
    it('should run this test #2', function () {
      (1).should.equal(1);
    });
  
    it('should run this test #3', function () {
      ('foo').should.equal('foo');
    });
  });
  
  describe('should run only suites that marked as `only`', function () {
    describe.only('should run all this tdd suite', function () {
      it('should run this test #1', function () {
        (true).should.equal(true);
      });
  
      it('should run this test #2', function () {
        (true).should.equal(true);
      });
    });
  
    describe('should not run this suite', function () {
      it('should run this test', function () {
        (true).should.equal(false);
      });
    });
  });
  
  // Nested situation
  describe('should not run parent tests', function () {
    it('should not run this test', function () {
      (true).should.equal(false);
    });
    describe('and not the child tests too', function () {
      it('should not run this test', function () {
        (true).should.equal(false);
      });
      describe.only('but run all the tests in this suite', function () {
        it('should run this test #1', function () {
          (true).should.equal(true);
        });
        it('should run this test #2', function () {
          (true).should.equal(true);
        });
      });
    });
  });
  
  // mark test as `only` override the suite behavior
  describe.only('should run only tests that marked as `only`', function () {
    it('should not run this test #1', function () {
      (false).should.equal(true);
    });
  
    it.only('should run this test #2', function () {
      (true).should.equal(true);
    });
  
    it('should not run this test #3', function () {
      (false).should.equal(true);
    });
  
    it.only('should run this test #4', function () {
      (true).should.equal(true);
    });
  });
  
  describe.only('Should run only test cases that mark as only', function () {
    it.only('should runt his test', function () {
      (true).should.equal(true);
    });
  
    it('should not run this test', function () {
      (false).should.equal(true);
    });
  
    describe('should not run this suite', function () {
      it('should not run this test', function () {
        (false).should.equal(true);
      });
    });
  });
  
  // Root Suite
  it.only('#Root-Suite, should run this test-case #1', function () {
    (true).should.equal(true);
  });
  
  it.only('#Root-Suite, should run this test-case #2', function () {
    (true).should.equal(true);
  });
  
  it('#Root-Suite, should not run this test', function () {
    (false).should.equal(true);
  });
  