Chore: Mobile: Add NoteBodyViewer tests (#10747)

packages/app-mobile/jest.setup.js

@@ -1,9 +1,12 @@
 /* eslint-disable jest/require-top-level-describe */
 
 const { afterEachCleanUp, afterAllCleanUp } = require('@joplin/lib/testing/test-utils.js');
+const shim = require('@joplin/lib/shim').default;
 const { shimInit } = require('@joplin/lib/shim-init-node.js');
+const injectedJs = require('./utils/injectedJs.js').default;
 const { mkdir, rm } = require('fs-extra');
 const path = require('path');
+const sharp = require('sharp');
 const { tmpdir } = require('os');
 const uuid = require('@joplin/lib/uuid').default;
 const sqlite3 = require('sqlite3');
@@ -19,7 +22,14 @@ window.setImmediate = setImmediate;
 shimInit({
 	nodeSqlite: sqlite3,
 	React,
+	sharp,
 });
+shim.injectedJs = (name) => {
+	if (!(name in injectedJs)) {
+		throw new Error(`Cannot find injected JS with ID ${name}`);
+	}
+	return injectedJs[name];
+};
 
 // This library has the following error when running within Jest:
 //   Invariant Violation: `new NativeEventEmitter()` requires a non-null argument.
@@ -40,17 +50,27 @@ jest.doMock('react-native-version-info', () => {
 });
 
 // react-native-webview expects native iOS/Android code so needs to be mocked.
-jest.mock('react-native-webview', () => {
-	const { View } = require('react-native');
-	return {
-		WebView: View,
-	};
+jest.mock('./components/ExtendedWebView', () => {
+	return require('./components/ExtendedWebView/index.jest.js');
 });
 
 jest.mock('@react-native-clipboard/clipboard', () => {
 	return { default: { getString: jest.fn(), setString: jest.fn() } };
 });
 
+jest.mock('react-native-share', () => {
+	return { default: { } };
+});
+
+// Used by the renderer
+jest.doMock('react-native-vector-icons/Ionicons', () => {
+	return {
+		default: class extends require('react-native').View {
+			static getImageSourceSync = () => ({ uri: '' });
+		},
+	};
+});
+
 // react-native-fs's CachesDirectoryPath export doesn't work in a testing environment.
 // Use a temporary folder instead.
 const tempDirectoryPath = path.join(tmpdir(), `appmobile-test-${uuid.createNano()}`);