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test/unit/specs/affix.spec.js 4.48 KB
2c00b6fd   oyv1cent   Add Affix compone...
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  import { createVue, destroyVM } from '../util';
  
  describe('Affix.vue', () => {
    let vm;
    afterEach(() => {
      destroyVM(vm);
    });
  
    it('should create a Affix component without slot', done => {
      vm = createVue('<Affix></Affix>');
      expect(vm.$el.children[0].tagName).to.equal('DIV');
      expect(vm.$el.children[0].className).to.equal('');
      done();
    });
  
    it('should create a Affix component with slot', done => {
      vm = createVue(`
          <Affix>
              <span class="demo-affix">Fixed at the top</span>
          </Affix>
      `);
      expect(vm.$el.children[0].children[0].tagName).to.equal('SPAN');
      expect(vm.$el.children[0].children[0].className).to.equal('demo-affix');
      done();
    });
  
    it('set offset-top props', done => {
      vm = createVue(`
      <div>
          <Affix :offset-top="20">
              <span class="demo-affix">Fixed at the top</span>
          </Affix>
          <div style="width: 100%; height: 2000px"></div>
      </div>
      `, true);
      expect(vm.$el.children[0].children[0].classList.contains('ivu-affix')).to.false;
      expect(vm.$el.children[0].children[0].style.top).to.equal('');
      expect(vm.$el.children[0].children[1].style.display).to.equal('none');
      window.scrollTo(0, 10000);
      setTimeout(()=>{
        expect(vm.$el.children[0].children[0].classList.contains('ivu-affix')).to.true;
        expect(vm.$el.children[0].children[0].style.top).to.equal('20px');
        expect(vm.$el.children[0].children[1].style.display).to.equal('');
        done();
      }, 100);
    });
  
    it('set offset-bottom props', done => {
      vm = createVue(`
      <div>
          <div style="width: 100%; height: 2000px"></div>
          <Affix :offset-bottom="20">
              <span class="demo-affix">Fixed at the top</span>
          </Affix>
          <div style="width: 100%; height: 2000px"></div>
      </div>
      `, true);
      expect(vm.$el.children[1].children[0].classList.contains('ivu-affix')).to.false;
      expect(vm.$el.children[1].children[0].style.bottom).to.equal('');
      // Affix component haven't run handleScroll function when component mounted in real dom.
      // use scrollTo() to trigger scroll event.
      window.scrollTo(0, 100);
      setTimeout(()=>{
        expect(vm.$el.children[1].children[0].classList.contains('ivu-affix')).to.true;
        expect(vm.$el.children[1].children[0].style.bottom).to.equal('20px');
        window.scrollTo(0, 10000);
        setTimeout(()=>{
          expect(vm.$el.children[1].children[0].classList.contains('ivu-affix')).to.false;
          expect(vm.$el.children[1].children[0].style.bottom).to.equal('');
          done();
        }, 100);
      }, 100);
    });
  
    it('both props are set, only offset-bottom is valid', done => {
      vm = createVue(`
      <div>
          <div style="width: 100%; height: 2000px"></div>
          <Affix :offset-bottom="20" :offset-top="20">
              <span class="demo-affix">Fixed at the top</span>
          </Affix>
          <div style="width: 100%; height: 2000px"></div>
      </div>
      `, true);
      expect(vm.$el.children[1].children[0].classList.contains('ivu-affix')).to.false;
      expect(vm.$el.children[1].children[0].style.bottom).to.equal('');
      // Affix component haven't run handleScroll function when component mounted in real dom.
      // use scrollTo() to trigger scroll event.
      window.scrollTo(0, 100);
      setTimeout(()=>{
        expect(vm.$el.children[1].children[0].classList.contains('ivu-affix')).to.true;
        expect(vm.$el.children[1].children[0].style.bottom).to.equal('20px');
        window.scrollTo(0, 10000);
        setTimeout(()=>{
          expect(vm.$el.children[1].children[0].classList.contains('ivu-affix')).to.false;
          expect(vm.$el.children[1].children[0].style.bottom).to.equal('');
          done();
        }, 100);
      }, 100);
    });
  
    it('both props not set, should fixed and top equal 0', done => {
      vm = createVue(`
      <div>
          <Affix>
              <span class="demo-affix">Fixed at the top</span>
          </Affix>
          <div style="width: 100%; height: 2000px"></div>
      </div>
      `, true);
      expect(vm.$el.children[0].children[0].classList.contains('ivu-affix')).to.false;
      expect(vm.$el.children[0].children[0].style.top).to.equal('');
      expect(vm.$el.children[0].children[1].style.display).to.equal('none');
      window.scrollTo(0, 10000);
      setTimeout(()=>{
        expect(vm.$el.children[0].children[0].classList.contains('ivu-affix')).to.true;
        expect(vm.$el.children[0].children[0].style.top).to.equal('0px');
        expect(vm.$el.children[0].children[1].style.display).to.equal('');
        done();
      }, 100);
    });
  
  });