test: update test case

Author: kagawagao

__tests__/plots/__snapshots__/line.spec.tsx.snap

@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`LineChart lifecycle 1`] = `<div />`;

__tests__/plots/line.spec.tsx

@@ -1,5 +1,6 @@
 import React, { createRef } from 'react'
 import ReactDOM from 'react-dom'
+import { create } from 'react-test-renderer'
 import LineChart from '../../src/plots/line'
 import { LineOptions, Plot as BasePlot } from '@antv/g2plot'
 
@@ -30,18 +31,48 @@ describe('LineChart', () => {
   })
 
   test('test update config and data', () => {
+    const data = [
+      { year: '1991', value: 3 },
+      { year: '1992', value: 4 },
+      { year: '1993', value: 3.5 },
+      { year: '1994', value: 5 },
+      { year: '1995', value: 4.9 },
+      { year: '1996', value: 6 },
+      { year: '1997', value: 7 },
+      { year: '1998', value: 9 },
+      { year: '1999', value: 13 },
+    ]
+    const config = {
+      data,
+      xField: 'year',
+      yField: 'value',
+      smooth: true,
+      meta: {
+        value: {
+          max: 15,
+        },
+      },
+    }
     const div = document.createElement('div')
 
-    ReactDOM.render(<LineChart data={null} />, div)
+    ReactDOM.render(<LineChart {...config} data={null} />, div)
 
-    ReactDOM.render(<LineChart data={[]} autoFit />, div)
+    ReactDOM.render(<LineChart {...config} data={[]} autoFit />, div)
 
-    ReactDOM.render(<LineChart data={null} autoFit />, div)
+    ReactDOM.render(<LineChart {...config} data={null} autoFit />, div)
 
-    ReactDOM.render(<LineChart data={[{ x: 1 }]} autoFit />, div)
-    ReactDOM.render(<LineChart autoFit data={[]} />, div)
-    ReactDOM.render(<LineChart data={[]} autoFit />, div)
+    ReactDOM.render(<LineChart {...config} autoFit />, div)
+    ReactDOM.render(<LineChart {...config} autoFit data={[]} />, div)
+    ReactDOM.render(<LineChart {...config} data={[]} autoFit />, div)
 
     ReactDOM.unmountComponentAtNode(div)
   })
+
+  test('lifecycle', () => {
+    const renderer = create(<LineChart data={[]} />)
+
+    expect(renderer.toJSON()).toMatchSnapshot()
+
+    renderer.unmount()
+  })
 })