testing: add toggle command for showing test coverage in Explorer view (microsoft#261062)

* Initial plan

* Add toggle command for coverage in Explorer view

- Add CoverageToggleInExplorer command ID to TestCommandId enum
- Implement ToggleCoverageInExplorer action with proper menu integration
- Add test to verify command registration

Co-authored-by: connor4312 <[email protected]>

* Enhance toggle command with Test Explorer integration

- Add command to Test Explorer view title bar
- Add comprehensive test suite for toggle functionality
- Improve command discoverability and UX

Co-authored-by: connor4312 <[email protected]>

* Remove menu and no-op tests as requested

Co-authored-by: connor4312 <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: connor4312 <[email protected]>

Author: Copilot

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

@@ -878,6 +878,32 @@ registerAction2(class FilterCoverageToTestInEditor extends Action2 {
 	}
 });
 
+registerAction2(class ToggleCoverageInExplorer extends Action2 {
+	constructor() {
+		super({
+			id: TestCommandId.CoverageToggleInExplorer,
+			title: localize2('testing.toggleCoverageInExplorerTitle', "Toggle Coverage in Explorer"),
+			metadata: {
+				description: localize2('testing.toggleCoverageInExplorerDesc', 'Toggle the display of test coverage in the File Explorer view.')
+			},
+			category: Categories.Test,
+			toggled: {
+				condition: ContextKeyExpr.equals('config.testing.showCoverageInExplorer', true),
+				title: localize('testing.hideCoverageInExplorer', "Hide Coverage in Explorer"),
+			},
+			menu: [
+				{ id: MenuId.CommandPalette, when: TestingContextKeys.isTestCoverageOpen },
+			]
+		});
+	}
+
+	run(accessor: ServicesAccessor): void {
+		const config = accessor.get(IConfigurationService);
+		const value = getTestingConfiguration(config, TestingConfigKeys.ShowCoverageInExplorer);
+		config.updateValue(TestingConfigKeys.ShowCoverageInExplorer, !value);
+	}
+});
+
 class ActionWithIcon extends Action {
 	constructor(id: string, title: string, public readonly icon: ThemeIcon, enabled: boolean | undefined, run: () => void) {
 		super(id, title, undefined, enabled, run);

src/vs/workbench/contrib/testing/common/constants.ts

@@ -69,6 +69,7 @@ export const enum TestCommandId {
 	CoverageFilterToTestInEditor = 'testing.coverageFilterToTestInEditor',
 	CoverageLastRun = 'testing.coverageLastRun',
 	CoverageSelectedAction = 'testing.coverageSelected',
+	CoverageToggleInExplorer = 'testing.toggleCoverageInExplorer',
 	CoverageToggleToolbar = 'testing.coverageToggleToolbar',
 	CoverageViewChangeSorting = 'testing.coverageViewChangeSorting',
 	DebugAction = 'testing.debug',

src/vs/workbench/contrib/testing/test/browser/codeCoverageDecorations.test.ts

@@ -100,4 +100,5 @@ suite('Code Coverage Decorations', () => {
 		// Should have no ranges available for inline display
 		assert.strictEqual(emptyModel.ranges.length === 0, true, 'Model with no coverage details should have no ranges');
 	});
+
 });