test: add test case for Point geometry

src/geometry/point.ts

@@ -14,7 +14,7 @@ export default class Point extends Geometry {
 
     return {
       ...shapeCfg,
-      isStack: !!this.getAdjust('adjust'),
+      isStack: !!this.getAdjust('adjust'), // 层叠点图
     };
   }
 }

tests/unit/geometry/point-spec.ts

@@ -0,0 +1,48 @@
+import { getCoordinate } from '@antv/coord';
+import Point from '../../../src/geometry/point';
+import Theme from '../../../src/theme/antv';
+import { createCanvas, createDiv, removeDom } from '../../util/dom';
+
+import 'jest-extended';
+
+const CartesianCoordinate = getCoordinate('rect');
+
+describe('Point', () => {
+  const div = createDiv();
+  const canvas = createCanvas({
+    container: div,
+    width: 300,
+    height: 300,
+  });
+  const rectCoord = new CartesianCoordinate({
+    start: { x: 0, y: 300 },
+    end: { x: 300, y: 0 },
+  });
+
+  it('draw point', () => {
+    const point = new Point({
+      data: [{ x: 1996, y: 30 }, { x: 1990, y: 210 }, { x: 1993, y: 29 }],
+      container: canvas.addGroup(),
+      theme: Theme,
+      coordinate: rectCoord,
+    });
+
+    point.position('x*y');
+    point.initial();
+    point.paint();
+    canvas.draw();
+
+    expect(point.shapeType).toBe('point');
+    // @ts-ignore
+    expect(point.generatePoints).toBe(true);
+
+    const element = point.elements[0];
+    expect(element.data).toEqual({ x: 1996, y: 30 });
+    expect(element.model.isStack).toBe(false);
+  });
+
+  afterAll(() => {
+    canvas.destroy();
+    removeDom(div);
+  });
+});