fix onVisibleChange arguments error (ant-design#4589)

* fix onVisibleChange arguments error

* add test

* trigger travis

components/tooltip/__tests__/tooltip.test.js

@@ -0,0 +1,53 @@
+import React from 'react';
+import { mount } from 'enzyme';
+import Tooltip from '..';
+
+describe('Tooltip', () => {
+  it('check `onVisibleChange` arguments', () => {
+    const onVisibleChange = jest.fn();
+
+    const wrapper = mount(
+      <Tooltip
+        title=""
+        mouseEnterDelay={0}
+        mouseLeaveDelay={0}
+        onVisibleChange={onVisibleChange}
+      >
+        <div>Hello world!</div>
+      </Tooltip>
+    );
+
+    // `title` is empty.
+    const div = wrapper.find('div').at(0);
+    div.simulate('mouseenter');
+    expect(onVisibleChange).not.toHaveBeenCalled();
+    expect(wrapper.ref('tooltip').prop('visible')).toBe(false);
+
+    div.simulate('mouseleave');
+    expect(onVisibleChange).not.toHaveBeenCalled();
+    expect(wrapper.ref('tooltip').prop('visible')).toBe(false);
+
+
+    // update `title` value.
+    wrapper.setProps({ title: 'Have a nice day!' });
+    wrapper.simulate('mouseenter');
+    expect(onVisibleChange).toBeCalledWith(true); // mock.calls.length++
+    expect(wrapper.ref('tooltip').prop('visible')).toBe(true);
+
+    wrapper.simulate('mouseleave');
+    expect(onVisibleChange).toBeCalledWith(false); // mock.calls.length++
+    expect(wrapper.ref('tooltip').prop('visible')).toBe(false);
+
+
+    // add `visible` props.
+    wrapper.setProps({ visible: false });
+    wrapper.simulate('mouseenter');
+    expect(onVisibleChange.mock.calls.length).toBe(2);
+    expect(wrapper.ref('tooltip').prop('visible')).toBe(false);
+
+    wrapper.simulate('mouseleave');
+    expect(onVisibleChange.mock.calls.length).toBe(2);
+    expect(wrapper.ref('tooltip').prop('visible')).toBe(false);
+  });
+});
+

components/tooltip/index.tsx

@@ -51,7 +51,7 @@ export default class Tooltip extends React.Component<TooltipProps, any> {
     super(props);
 
     this.state = {
-      visible: props.visible,
+      visible: !!props.visible,
     };
   }
 
@@ -62,14 +62,19 @@ export default class Tooltip extends React.Component<TooltipProps, any> {
   }
 
   onVisibleChange = (visible) => {
-    const props = this.props;
+    const { props, state } = this;
+    const { title, overlay, onVisibleChange } = props;
+
     if (!('visible' in props)) {
+      if (!title && !overlay) {
+        visible = false;
+      }
+
       this.setState({ visible });
-    }
 
-    const onVisibleChange = props.onVisibleChange;
-    if (onVisibleChange) {
-      onVisibleChange(visible);
+      if (onVisibleChange && (visible !== state.visible)) {
+        onVisibleChange(visible);
+      }
     }
   }