testing basics with jest

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "tsc --watch",
     "build": "tsc",
-    "prepublish": "npm run build"
+    "prepublish": "npm run build",
+    "test": "jest"
   },
   "repository": {
     "type": "git",
@@ -26,7 +27,11 @@
   },
   "homepage": "https://github.com/pd4d10/vite-plugin-svgr#readme",
   "devDependencies": {
+    "@babel/preset-env": "^7.15.0",
+    "@babel/preset-typescript": "^7.15.0",
     "@types/node": "^15.12.2",
+    "jest": "^27.0.6",
+    "ts-node": "^10.2.0",
     "typescript": "^4.3.2",
     "vite": "^2.3.7"
   },

src/index.test.ts

@@ -0,0 +1,44 @@
+import {join} from 'path';
+import svgr from '.';
+describe('svgr plugin', () => {
+	it('should observe defaultExport', async () => {
+		expect(
+			await svgr({defaultExport: true}).transform(
+				'// some code here',
+				join(__dirname, 'test.svg')))
+			.toMatchInlineSnapshot(`
+		  Object {
+			"code": "import * as React from \\"react\\";
+		  function ReactComponent(props) {
+			return /* @__PURE__ */ React.createElement(\\"svg\\", {
+			  xmlns: \\"http://www.w3.org/2000/svg\\",
+			  ...props
+			}, /* @__PURE__ */ React.createElement(\\"text\\", null, \\"SVG\\"));
+		  }
+		  export default ReactComponent;
+		  ",
+			"map": null,
+		  }
+		`)
+	})
+	it('should work with no configs', async () => {
+		expect(
+			await svgr().transform(
+				'// some code here',
+				join(__dirname, 'test.svg')))
+			.toMatchInlineSnapshot(`
+		Object {
+		  "code": "import * as React from \\"react\\";
+		function ReactComponent(props) {
+		  return /* @__PURE__ */ React.createElement(\\"svg\\", {
+			xmlns: \\"http://www.w3.org/2000/svg\\",
+			...props
+		  }, /* @__PURE__ */ React.createElement(\\"text\\", null, \\"SVG\\"));
+		}
+		export { ReactComponent };
+		",
+		  "map": null,
+		}
+	  `)
+	})
+})