tests(react): create tests for the react bindings to core (#17551)

* Add tests.

* updates after API meeting.

* test(): add tests for create controller components.

* correct testing for controller component

* Ensure tests properly cleanup after each run.

* create common test utils for overlay and controllers.

* initial tests for ion router outlet

* simple update.

* add mocks for jest tests.

react/package.json

@@ -24,7 +24,8 @@
     "clean": "rm -rf dist",
     "compile": "npm run tsc",
     "deploy": "np --any-branch",
-    "tsc": "tsc -p ."
+    "tsc": "tsc -p .",
+    "test": "jest"
   },
   "main": "./dist/index.js",
   "module": "./dist/index.js",
@@ -33,25 +34,39 @@
     "dist/"
   ],
   "devDependencies": {
+    "@trust/webcrypto": "^0.9.2",
     "@types/jest": "23.3.9",
     "@types/node": "10.12.9",
     "@types/react": "16.7.6",
     "@types/react-dom": "16.0.9",
-    "@types/react-router": "^4.4.3",
+    "@types/react-router": "^4.4.4",
+    "@types/react-router-dom": "^4.3.1",
+    "jest": "^23.0.0",
+    "jest-dom": "^3.0.2",
+    "np": "^3.1.0",
     "react": "^16.7.0",
     "react-dom": "^16.7.0",
     "react-router": "^4.3.1",
     "react-router-dom": "^4.3.1",
-    "typescript": "^3.2.2",
-    "np": "^3.1.0"
+    "react-testing-library": "^5.5.3",
+    "ts-jest": "^23.10.5",
+    "typescript": "^3.2.2"
   },
   "dependencies": {
-    "@ionic/core": "4.0.1"
+    "@ionic/core": "^4.0.2"
   },
   "peerDependencies": {
     "react": "^16.7.0",
     "react-dom": "^16.7.0",
     "react-router": "^4.3.1",
     "react-router-dom": "^4.3.1"
+  },
+  "jest": {
+    "preset": "ts-jest",
+    "setupTestFrameworkScriptFile": "<rootDir>/jest.setup.js",
+    "testPathIgnorePatterns": [
+      "node_modules",
+      "dist"
+    ]
   }
 }