Add test:fast for faster unit test runs (#3179)

* refactor: optimize karma configuration for improved performance

* feat: add fast karma configuration and update package.json for debugging

* refactor: streamline karma plugin declaration and update test scripts for clarity

* refactor: update test commands to use fast karma configuration

Author: BryanValverdeU

karma.fast.conf.js

@@ -0,0 +1,139 @@
+const argv = require('minimist')(process.argv.slice(2));
+const components = argv.components !== true && argv.components;
+const runCoverage = typeof argv.coverage !== 'undefined';
+const runFirefox = typeof argv.firefox !== 'undefined';
+const runChrome = typeof argv.chrome !== 'undefined';
+
+const rootPath = __dirname;
+
+module.exports = function (config) {
+    const plugins = ['karma-webpack', 'karma-jasmine', 'karma-sourcemap-loader'];
+    const launcher = [];
+
+    if (runCoverage) {
+        plugins.push('karma-coverage-istanbul-reporter');
+    }
+
+    if (runChrome) {
+        plugins.push('karma-chrome-launcher');
+        launcher.push('Chrome');
+    }
+
+    if (runFirefox) {
+        plugins.push('karma-firefox-launcher');
+        launcher.push('Firefox');
+    }
+
+    const tsConfig = {
+        compilerOptions: {
+            rootDir: rootPath,
+            declaration: false,
+            strict: false,
+            downlevelIteration: true,
+            transpileOnly: true, // Faster compilation - skip type checking
+            paths: {
+                '*': ['*', rootPath + '/packages/*'],
+            },
+        },
+        transpileOnly: true, // Enable faster transpilation
+    };
+
+    const rules = runCoverage
+        ? [
+              {
+                  test: /lib(\\|\/).*\.ts$/,
+                  use: [
+                      { loader: '@jsdevtools/coverage-istanbul-loader' },
+                      {
+                          loader: 'ts-loader',
+                          options: tsConfig,
+                      },
+                  ],
+              },
+              {
+                  test: /test(\\|\/).*\.ts$/,
+                  loader: 'ts-loader',
+                  options: tsConfig,
+              },
+          ]
+        : [
+              {
+                  test: /\.ts$/,
+                  loader: 'ts-loader',
+                  options: tsConfig,
+              },
+          ];
+
+    const settings = {
+        basePath: '.',
+        plugins,
+        client: {
+            components: components,
+            clearContext: false,
+            captureConsole: true,
+        },
+        browsers: launcher,
+        files: ['tools/karma.test.all.js'],
+        frameworks: ['jasmine'],
+        preprocessors: {
+            'tools/karma.test.all.js': ['webpack', 'sourcemap'],
+        },
+        port: 9876,
+        colors: true,
+        logLevel: config.LOG_INFO,
+        autoWatch: true,
+        autoWatchBatchDelay: 300, // Batch file changes for better performance
+
+        // to avoid DISCONNECTED messages
+        browserDisconnectTimeout: 10000, // default 2000
+        browserDisconnectTolerance: 1, // default 0
+        browserNoActivityTimeout: 60000, //default 10000
+        browserConsoleLogOptions: {
+            level: 'log',
+            format: '%b %T: %m',
+            terminal: true,
+        },
+
+        singleRun: true,
+        captureTimeout: 60000,
+
+        webpack: {
+            mode: 'development',
+            devtool: 'eval-source-map', // Faster than inline-source-map
+            module: {
+                rules,
+            },
+            resolve: {
+                extensions: ['.ts', '.tsx', '.js'],
+                modules: ['./packages', './node_modules'],
+            },
+            // Workaround karma-webpack issue https://github.com/ryanclark/karma-webpack/issues/493
+            // Got this solution from https://github.com/ryanclark/karma-webpack/issues/493#issuecomment-780411348
+            optimization: {
+                splitChunks: false,
+                removeAvailableModules: false, // Performance optimization
+                removeEmptyChunks: false, // Performance optimization
+            },
+            // Add filesystem caching for better performance
+            cache: {
+                type: 'filesystem',
+                cacheDirectory: require('path').join(rootPath, 'node_modules/.cache/webpack'),
+            },
+            stats: 'errors-warnings', // Reduce console output
+        },
+
+        // Concurrency level
+        // how many browser should be started simultaneous
+        concurrency: Infinity,
+    };
+
+    if (runCoverage) {
+        settings.reporters = ['coverage-istanbul'];
+        settings.coverageIstanbulReporter = {
+            reports: ['html', 'lcovonly', 'text-summary'],
+            dir: './dist/deploy/coverage',
+        };
+    }
+
+    config.set(settings);
+};

package.json

@@ -27,8 +27,9 @@
         "test": "node tools/build.js normalize & karma start --chrome",
         "test:chrome": "node tools/build.js normalize & karma start --chrome",
         "test:firefox": "node tools/build.js normalize & karma start --firefox",
-        "test:debug": "node tools/build.js normalize & karma start --no-single-run --chrome",
-        "test:debug-firefox": "node tools/build.js normalize & karma start --no-single-run --firefox",
+        "test:debug": "node tools/build.js normalize & karma start karma.fast.conf.js --no-single-run --chrome",
+        "test:fast": "node tools/build.js normalize & karma start karma.fast.conf.js --chrome",
+        "test:debug-firefox": "node tools/build.js normalize & karma start karma.fast.conf.js --no-single-run --firefox",
         "test:coverage": "node tools/build.js normalize & karma start --coverage --firefox --chrome",
         "publish": "node tools/build.js clean normalize buildcommonjs buildamd buildmjs dts pack packprod builddemo builddoc publish"
     },