test: moved react-17 test into src

Author: scottrippey

src/useEvent.test-react-17.ts

@@ -0,0 +1,8 @@
+// Run all the other tests:
+import "./useEvent.test";
+
+// Just to make sure our overrides are working:
+import React from "react";
+it(`we're testing React 17`, async () => {
+  expect(React.version).toMatchInlineSnapshot(`"17.0.2"`);
+});

test/react-17/jest.config.js

@@ -2,9 +2,9 @@ module.exports = {
   ...require("../../jest.config"),
   rootDir: ".",
   moduleNameMapper: {
-    // Ensure we "lock" the React version for these tests:
+    // Ensure we "lock" the React version to v17 for these tests:
     "^react$": "<rootDir>/node_modules/react",
-    // Use react-hooks instead:
+    // Use react-hooks instead (we have a tiny bit of interop code to ensure the tests still work)
     "^@testing-library/react$": "<rootDir>/node_modules/@testing-library/react-hooks",
   },
 };

test/react-17/package-lock.json

@@ -1,7 +1,8 @@
 {
   "devDependencies": {
     "@testing-library/react-hooks": "^8.0.1",
-    "react": "^17.0.2"
+    "react": "^17.0.2",
+    "react-test-renderer": "^17.0.2"
   },
   "scripts": {
     "test": "jest"

test/react-17/package.json

@@ -1,18 +1 @@
-import React from "react";
-import { renderHook } from "@testing-library/react-hooks";
-
-// import useEvent from "../../src/useEvent";
-
-it(`we're testing React 17`, async () => {
-  expect(React.version).toMatchInlineSnapshot(`"17.0.2"`);
-});
-
-describe("useEvent", () => {
-  it("should stuff", async () => {
-    const res = renderHook(() => {
-      return 5;
-      // return React.useMemo(() => 5, []);
-    });
-    expect(typeof res.result.current).toEqual("function");
-  });
-});
+import "../../src/useEvent.test-react-17";