How to use the @antv/g.Event function in @antv/g

it.skip('legend click', () => {
    const lc = view.get('legendController');
    const legend = lc.legends[0];
    const itemsGroup = legend.get('itemsGroup');
    const targetItem = itemsGroup.get('children')[0];
    const event1 = new Event('click', {}, true, true);
    event1.target = targetItem.get('children')[0];
    itemsGroup.emit('click', event1);
    const filteredValues = view.getFilteredValues('country');
    expect(filteredValues).eql(['Africa', 'Europe', 'Oceania']);

    expect(view.get('isUpdate')).to.be.true;
  });

onMouseover() {
        overCalled = true;
      },
      onMouseleave() {
        leaveCalled = true;
      },
    });

    view.render();

    const lc = view.get('legendController');
    const legend = lc.legends[0];
    const itemsGroup = legend.get('itemsGroup');
    const targetItem = itemsGroup.get('children')[0];

    const clickEvent = new Event('mousemove', {}, true, true);
    clickEvent.target = targetItem.get('children')[0];
    itemsGroup.emit('click', clickEvent);
    expect(clickCalled).to.be.true;

    const mousemoveEvent = new Event('mousemove', {}, true, true);
    mousemoveEvent.target = targetItem.get('children')[1];
    itemsGroup.emit('mousemove', mousemoveEvent);
    expect(overCalled).to.be.true;

    const mouseleaveEvent = new Event('mouseleave', {}, true, true);
    mouseleaveEvent.target = targetItem.get('children')[1];
    itemsGroup.emit('mouseleave', mouseleaveEvent);
    expect(leaveCalled).to.be.true;
  });

const lc = view.get('legendController');
    const legend = lc.legends[0];
    const itemsGroup = legend.get('itemsGroup');
    const targetItem = itemsGroup.get('children')[0];

    const clickEvent = new Event('mousemove', {}, true, true);
    clickEvent.target = targetItem.get('children')[0];
    itemsGroup.emit('click', clickEvent);
    expect(clickCalled).to.be.true;

    const mousemoveEvent = new Event('mousemove', {}, true, true);
    mousemoveEvent.target = targetItem.get('children')[1];
    itemsGroup.emit('mousemove', mousemoveEvent);
    expect(overCalled).to.be.true;

    const mouseleaveEvent = new Event('mouseleave', {}, true, true);
    mouseleaveEvent.target = targetItem.get('children')[1];
    itemsGroup.emit('mouseleave', mouseleaveEvent);
    expect(leaveCalled).to.be.true;
  });

},
    });

    view.render();

    const lc = view.get('legendController');
    const legend = lc.legends[0];
    const itemsGroup = legend.get('itemsGroup');
    const targetItem = itemsGroup.get('children')[0];

    const clickEvent = new Event('mousemove', {}, true, true);
    clickEvent.target = targetItem.get('children')[0];
    itemsGroup.emit('click', clickEvent);
    expect(clickCalled).to.be.true;

    const mousemoveEvent = new Event('mousemove', {}, true, true);
    mousemoveEvent.target = targetItem.get('children')[1];
    itemsGroup.emit('mousemove', mousemoveEvent);
    expect(overCalled).to.be.true;

    const mouseleaveEvent = new Event('mouseleave', {}, true, true);
    mouseleaveEvent.target = targetItem.get('children')[1];
    itemsGroup.emit('mouseleave', mouseleaveEvent);
    expect(leaveCalled).to.be.true;
  });

private _onMousemove(ev: EventType): void {
    const item = this._getLegendItem(ev.target);
    if (item && item.get('checked')) {
      const itemMouseover: EventType = new Event('itemmouseover', ev, true, true);
      itemMouseover.item = this._findItem(item);
      itemMouseover.checked = item.get('checked');
      this.emit('itemmouseover', itemMouseover);
      this.get('canvas').draw();
    }
  }

private _onMouseleave(ev: EventType) {
    const item = this._getLegendItem(ev.target);
    if (item && item.get('checked')) {
      const itemMouseleave: EventType = new Event('itemmouseleave', ev, true, true);
      itemMouseleave.item = this._findItem(item);
      itemMouseleave.checked = item.get('checked');
      this.emit('itemmouseleave', itemMouseleave);

      this.get('canvas').draw();
    }
  }

private _onClick(ev: EventType) {
    const clickedItem = this._getLegendItem(ev.target);
    if (clickedItem && !clickedItem.get('destroyed')) {
      const checked = clickedItem.get('checked');
      if (!this.get('allowAllCanceled') && checked && this.getCheckedCount() === 1) {
        return;
      }
      const mode = this.get('selectedMode');
      const item = this._findItem(clickedItem);
      const itemClick: EventType = new Event('itemclick', ev, true, true);
      itemClick.item = item;
      itemClick.currentTarget = clickedItem;
      itemClick.checked = mode === 'single' ? true : !checked;
      const unSelectedColor = this.get('unSelectedColor');
      const checkColor = this.get('textStyle').fill;
      let markerItem;
      let textItem;
      let legendItem;
      if (mode === 'single') {
        const itemsGroup = this.get('itemsGroup');
        const children = itemsGroup.get('children');
        each(children, (child: GroupType) => {
          markerItem = this._findShapeByName(child, 'legend-marker');
          textItem = this._findShapeByName(child, 'legend-text');
          legendItem = this._findShapeByName(child, 'legend-item');
          if (child !== clickedItem) {