setup jest with react-native-testing-library

Author: DaniAkash

babel.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  presets: ["module:metro-react-native-babel-preset"]
+};

jest.config.js

@@ -0,0 +1,7 @@
+module.exports = {
+  preset: "@testing-library/react-native",
+  verbose: true,
+  transformIgnorePatterns: [
+    "node_modules/(?!(jest-)?react-native|react-clone-referenced-element|@react-native-community|expo(nent)?|@expo(nent)?/.*|react-navigation|@react-navigation/.*|@unimodules/.*|unimodules|sentry-expo|native-base)"
+  ]
+};

package.json

@@ -3,7 +3,8 @@
   "version": "0.0.1",
   "description": "A React Native Masonry ScrollView that extends the inbuilt ScrollView component",
   "scripts": {
-    "build": "rm -rf ./lib && tsc -p ."
+    "build": "rm -rf ./lib && tsc -p .",
+    "test": "jest"
   },
   "main": "lib/index.js",
   "author": "DaniAkash <s.daniakash@gmail.com> (https://github.com/DaniAkash)",
@@ -17,13 +18,18 @@
     "masonry-scroll"
   ],
   "devDependencies": {
+    "@testing-library/react-native": "^5.0.3",
+    "@types/jest": "^25.1.1",
     "@types/react": "^16.9.19",
     "@types/react-native": "^0.61.7",
     "husky": "^4.2.1",
+    "jest": "^25.1.0",
+    "metro-react-native-babel-preset": "^0.58.0",
     "prettier": "^1.19.1",
     "pretty-quick": "^2.0.1",
     "react": "^16.12.0",
     "react-native": "^0.61.5",
+    "react-test-renderer": "^16.12.0",
     "typescript": "^3.7.5"
   }
 }

tsconfig.json

@@ -46,7 +46,8 @@
     // "typeRoots": [],                       /* List of folders to include type definitions from. */
     "types": [
       "react",
-      "react-native"
+      "react-native",
+      "jest"
     ] /* Type declaration files to be included in compilation. */,
     // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
     "esModuleInterop": true /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */,