feat(build): improve testing

gulpfile.ts

@@ -68,9 +68,10 @@ gulp.task('build.test', (done: any) =>
 
 // --------------
 // Build test watch.
-gulp.task('build.test.watch', (done: any) =>
+gulp.task('test.watch', (done: any) =>
   runSequence('build.test',
               'watch.test',
+              'karma.watch',
               done));
 
 // --------------
@@ -116,7 +117,7 @@ gulp.task('serve.prod', (done: any) =>
 // Test.
 gulp.task('test', (done: any) =>
   runSequence('build.test',
-              'karma.start',
+              'karma.run',
               done));
 
 // --------------

package.json

@@ -11,7 +11,7 @@
     "build.e2e": "gulp build.e2e --color",
     "build.prod": "gulp build.prod --color --config-env prod",
     "build.test": "gulp build.test --color",
-    "build.test.watch": "gulp build.test.watch --color",
+    "test.watch": "gulp test.watch --color",
     "generate.manifest": "gulp generate.manifest --color",
     "e2e": "protractor",
     "e2e.live": "protractor --elementExplorer",

tools/tasks/seed/karma.run.ts

@@ -0,0 +1,7 @@
+import { startKarma } from '../../utils/seed/karma.start';
+/**
+ * Executes the build process, running all unit tests using `karma`.
+ */
+export = (done: any) => {
+  return startKarma(done);
+};

tools/tasks/seed/karma.watch.ts

@@ -0,0 +1,9 @@
+import { startKarma } from '../../utils/seed/karma.start';
+/**
+ * Executes the build process, running all unit tests using `karma`.
+ */
+export = (done: any) => {
+  return startKarma(done, {
+    singleRun: false
+  });
+};

tools/utils/seed/karma.start.ts

@@ -0,0 +1,10 @@
+import * as karma from 'karma';
+import { join } from 'path';
+
+export const startKarma = (done: any, config: any = {}) => {
+  return new (<any>karma).Server(Object.assign({
+    configFile: join(process.cwd(), 'karma.conf.js'),
+    singleRun: true
+  }, config)).start(done);
+};
+