Fix unit tests

Author: Fatme Havaluova

test/platform-commands.ts

@@ -99,7 +99,9 @@ function createTestInjector() {
 	testInjector.register("commandsServiceProvider", {
 		registerDynamicSubCommands: () => {}
 	});
-
+	testInjector.register("commandsService", {
+		tryExecuteCommand: () => {}
+	});
 
 	return testInjector;
 }

test/platform-service.ts

@@ -38,6 +38,9 @@ function createTestInjector() {
 	testInjector.register('projectDataService', stubs.ProjectDataService);
 	testInjector.register('prompter', {});
 	testInjector.register('lockfile', stubs.LockFile);
+	testInjector.register("commandsService", {
+		tryExecuteCommand: () => {}
+	});
 
 	return testInjector;
 }