feat: implement unit testing with bundle

NativeScript/nativescript-cli#4392

Author: Fatme

bundle-app-root.xml

@@ -0,0 +1,2 @@
+<Frame defaultPage="main-page" id="root-frame">
+</Frame>

bundle-app.ts

@@ -0,0 +1,2 @@
+import * as application from "tns-core-modules/application";
+application.run({ moduleName: "bundle-app-root" });

declarations.d.ts

@@ -1,4 +1,10 @@
-interface String {
+declare const enum ScriptTypes {
+    TestType, // from tests folder
+    CodeUnderTestType, // from app folder
+    FrameworkAdapterType // from node_modules
+}
+
+interface String {
     startsWith(prefix: string): boolean;
 }
 
@@ -14,3 +20,50 @@ declare module java {
     }
 }
 
+interface IHostConfiguration {
+    port: number;
+    ips: string[];
+    options: {
+        debugBrk?: boolean;
+        debugTransport?: boolean;
+        bundle?: boolean;
+        appDirectoryRelativePath?: string;
+    }
+}
+
+interface INetworkConfiguration extends IHostConfiguration {
+    reachableIp: string;
+}
+
+interface IKarmaContext {
+    files: string[];
+}
+
+interface IScriptInfo {
+    url: string;
+    localPath?: string;
+    contents?: string;
+    type?: ScriptTypes;
+}
+
+interface IKarmaHostResolver {
+    resolveKarmaHost(ips: string[], port: number): Promise<string>;
+}
+
+interface IKarmaConnectionService {
+    connect(baseUrl: string): Promise<void>;
+}
+
+interface IKarmaFilesService {
+    getServedFilesData(baseUrl: string, config: IHostConfiguration): Promise<IScriptInfo[]>;
+}
+
+interface ITestExecutionService {
+    runTests(scripts: IScriptInfo[]): ITestExecutionError[];
+}
+
+interface ITestExecutionError {
+    msg: string;
+    url: string;
+    line: number;
+}

lib/after-prepare.ts

@@ -1,8 +1,8 @@
 import * as path from "path";
 import * as fs from "fs";
 
-module.exports = function ($platformsData, $testExecutionService) {
-	if($testExecutionService && $testExecutionService.platform) {
+module.exports = function ($platformsData, $testExecutionService, $options) {
+	if($testExecutionService && $testExecutionService.platform && !$options.bundle) {
 		let platformData = $platformsData.getPlatformData($testExecutionService.platform),
 			projectFilesPath = path.join(platformData.appDestinationDirectoryPath, "app"),
 			packageJsonPath = path.join(projectFilesPath, 'package.json'),

main-page.xml

@@ -1,6 +1,6 @@
 <Page xmlns="http://www.nativescript.org/tns.xsd" loaded="pageLoaded">
     <GridLayout cssClass="landingContainer">
-        <Image src="~/tns_modules/nativescript-unit-test-runner/nativescript.png" stretch="none" cssClass="landingBackground"/>
+        <Image src="{{ imageSrc }}" stretch="none" cssClass="landingBackground"/>
 
         <Label text="{{ serverInfo }}" cssClass="landingText"/>
     </GridLayout>