add mock before render #27

.travis.yml

@@ -13,4 +13,4 @@ script:
   - pre-commit run -a
   - npm install -g expo-cli --loglevel=error
   - npm install --log-level=error
-  #- npm test # Tests disabled for now
+  - npm test

App.test.js

@@ -1,11 +1,17 @@
 import React from "react";
+import App from "./App";
+
 import renderer from "react-test-renderer";
 
-import App from "./App";
+// Mock application
+jest.mock("expo", () => ({
+  AppLoading: "AppLoading"
+}));
+
+jest.mock("./navigation/navigation", () => "navigation");
 
-describe("<App />", () => {
-  it("has 1 child", () => {
-    const tree = renderer.create(<App />).toJSON();
-    expect(tree.children.length).toBe(1);
-  });
+// Snapshot test
+test("renders correctly", () => {
+  const tree = renderer.create(<App />).toJSON();
+  expect(tree).toMatchSnapshot();
 });

__snapshots__/App.test.js.snap

@@ -0,0 +1,3 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`renders correctly 1`] = `<navigation />`;

jest.config.js

@@ -176,7 +176,7 @@ module.exports = {
 
   // An array of regexp pattern strings that are matched against all source file paths, matched files will skip transformation
   transformIgnorePatterns: [
-    "node_modules/(?!(jest-)?react-native|react-clone-referenced-element|@react-native-community|expo(nent)?|@expo(nent)?/.*|react-navigation|@react-navigation/.*|@unimodules/.*|sentry-expo|native-base|react-native-screens|react-native|rn-sliding-up-panel)"
+    "node_modules/(?!(jest-)?react-native|react-clone-referenced-element|@react-native-community|expo(nent)?|@expo(nent)?/.*|react-navigation|@react-navigation/.*|@unimodules/.*|sentry-expo|native-base|react-native-screens|react-native|rn-sliding-up-panel|react-native-maps|react-test-renderer)"
   ]
 
   // An array of regexp pattern strings that are matched against all modules before the module loader will automatically return a mock for them