testing: avoid profiles dropdown when there's a single profile (#236509)

Fixes #232767

src/vs/workbench/contrib/testing/browser/testingExplorerView.ts

@@ -346,6 +346,7 @@ export class TestingExplorerView extends ViewPane {
 		const profileActions: IAction[] = [];
 
 		let participatingGroups = 0;
+		let participatingProfiles = 0;
 		let hasConfigurable = false;
 		const defaults = this.testProfileService.getGroupDefaultProfiles(group);
 		for (const { profiles, controller } of this.testProfileService.all()) {
@@ -363,6 +364,7 @@ export class TestingExplorerView extends ViewPane {
 				}
 
 				hasConfigurable = hasConfigurable || profile.hasConfigurationHandler;
+				participatingProfiles++;
 				profileActions.push(new Action(
 					`${controller.id}.${profile.profileId}`,
 					defaults.includes(profile) ? localize('defaultTestProfile', '{0} (Default)', profile.label) : profile.label,
@@ -402,7 +404,7 @@ export class TestingExplorerView extends ViewPane {
 		const menuActions = getFlatContextMenuActions(menu);
 
 		const postActions: IAction[] = [];
-		if (profileActions.length > 1) {
+		if (participatingProfiles > 1) {
 			postActions.push(new Action(
 				'selectDefaultTestConfigurations',
 				localize('selectDefaultConfigs', 'Select Default Profile'),
@@ -423,9 +425,12 @@ export class TestingExplorerView extends ViewPane {
 		}
 
 		// show menu actions if there are any otherwise don't
-		return menuActions.length > 0
-			? Separator.join(profileActions, menuActions, postActions)
-			: Separator.join(profileActions, postActions);
+		return {
+			numberOfProfiles: participatingProfiles,
+			actions: menuActions.length > 0
+				? Separator.join(profileActions, menuActions, postActions)
+				: Separator.join(profileActions, postActions),
+		};
 	}
 
 	/**
@@ -438,7 +443,7 @@ export class TestingExplorerView extends ViewPane {
 
 	private getRunGroupDropdown(group: TestRunProfileBitset, defaultAction: IAction, options: IActionViewItemOptions) {
 		const dropdownActions = this.getTestConfigGroupActions(group);
-		if (dropdownActions.length < 2) {
+		if (dropdownActions.numberOfProfiles < 2) {
 			return super.getActionViewItem(defaultAction, options);
 		}
 
@@ -452,7 +457,7 @@ export class TestingExplorerView extends ViewPane {
 
 		return this.instantiationService.createInstance(
 			DropdownWithPrimaryActionViewItem,
-			primaryAction, this.getDropdownAction(), dropdownActions,
+			primaryAction, this.getDropdownAction(), dropdownActions.actions,
 			'',
 			options
 		);