testing: navigate to test on double click (microsoft#184626)

Fixes microsoft#183835

Author: connor4312

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

@@ -546,6 +546,7 @@ class TestingExplorerViewModel extends Disposable {
 		@ITestingPeekOpener private readonly peekOpener: ITestingPeekOpener,
 		@ITestProfileService private readonly testProfileService: ITestProfileService,
 		@ITestingContinuousRunService private readonly crService: ITestingContinuousRunService,
+		@ICommandService commandService: ICommandService,
 	) {
 		super();
 
@@ -618,6 +619,12 @@ class TestingExplorerViewModel extends Disposable {
 			testService.excluded.onTestExclusionsChanged,
 		)(this.tree.refilter, this.tree));
 
+		this._register(this.tree.onMouseDblClick(e => {
+			if (e.element instanceof TestItemTreeElement && !e.element.children.size && e.element.test.item.uri) {
+				commandService.executeCommand('vscode.revealTest', e.element.test.item.extId);
+			}
+		}));
+
 		this._register(this.tree);
 
 		this._register(this.onChangeWelcomeVisibility(e => {