testing: fix icon on the margin doesn't work (microsoft#182094)

Fixes microsoft#182056

Author: connor4312

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

@@ -14,14 +14,16 @@ import { stripIcons } from 'vs/base/common/iconLabels';
 import { Iterable } from 'vs/base/common/iterator';
 import { Disposable, DisposableStore, IReference, MutableDisposable } from 'vs/base/common/lifecycle';
 import { ResourceMap } from 'vs/base/common/map';
+import { isMacintosh } from 'vs/base/common/platform';
+import { ThemeIcon } from 'vs/base/common/themables';
 import { Constants } from 'vs/base/common/uint';
 import { URI } from 'vs/base/common/uri';
 import { generateUuid } from 'vs/base/common/uuid';
 import { ContentWidgetPositionPreference, ICodeEditor, IContentWidgetPosition, IEditorMouseEvent, MouseTargetType } from 'vs/editor/browser/editorBrowser';
 import { ICodeEditorService } from 'vs/editor/browser/services/codeEditorService';
 import { EditorOption } from 'vs/editor/common/config/editorOptions';
 import { overviewRulerError, overviewRulerInfo } from 'vs/editor/common/core/editorColorRegistry';
-import { IRange, Range } from 'vs/editor/common/core/range';
+import { IRange } from 'vs/editor/common/core/range';
 import { IEditorContribution } from 'vs/editor/common/editorCommon';
 import { IModelDeltaDecoration, ITextModel, OverviewRulerLane, TrackedRangeStickiness } from 'vs/editor/common/model';
 import { IModelService } from 'vs/editor/common/services/model';
@@ -34,24 +36,22 @@ import { IContextKeyService } from 'vs/platform/contextkey/common/contextkey';
 import { IContextMenuService } from 'vs/platform/contextview/browser/contextView';
 import { IInstantiationService } from 'vs/platform/instantiation/common/instantiation';
 import { themeColorFromId } from 'vs/platform/theme/common/themeService';
-import { ThemeIcon } from 'vs/base/common/themables';
 import { IUriIdentityService } from 'vs/platform/uriIdentity/common/uriIdentity';
+import { EditorLineNumberContextMenu, GutterActionsRegistry } from 'vs/workbench/contrib/codeEditor/browser/editorLineNumberMenu';
 import { getTestItemContextOverlay } from 'vs/workbench/contrib/testing/browser/explorerProjections/testItemContextOverlay';
 import { testingRunAllIcon, testingRunIcon, testingStatesToIcons } from 'vs/workbench/contrib/testing/browser/icons';
-import { DefaultGutterClickAction, getTestingConfiguration, TestingConfigKeys } from 'vs/workbench/contrib/testing/common/configuration';
-import { labelForTestInState, Testing } from 'vs/workbench/contrib/testing/common/constants';
+import { DefaultGutterClickAction, TestingConfigKeys, getTestingConfiguration } from 'vs/workbench/contrib/testing/common/configuration';
+import { Testing, labelForTestInState } from 'vs/workbench/contrib/testing/common/constants';
 import { TestId } from 'vs/workbench/contrib/testing/common/testId';
-import { ITestDecoration as IPublicTestDecoration, ITestingDecorationsService, TestDecorations } from 'vs/workbench/contrib/testing/common/testingDecorations';
-import { ITestingPeekOpener } from 'vs/workbench/contrib/testing/common/testingPeekOpener';
-import { isFailedState, maxPriority } from 'vs/workbench/contrib/testing/common/testingStates';
-import { buildTestUri, parseTestUri, TestUriType } from 'vs/workbench/contrib/testing/common/testingUri';
 import { ITestProfileService } from 'vs/workbench/contrib/testing/common/testProfileService';
 import { LiveTestResult } from 'vs/workbench/contrib/testing/common/testResult';
 import { ITestResultService } from 'vs/workbench/contrib/testing/common/testResultService';
-import { getContextForTestItem, ITestService, testsInFile } from 'vs/workbench/contrib/testing/common/testService';
-import { IncrementalTestCollectionItem, InternalTestItem, IRichLocation, ITestMessage, ITestRunProfile, TestDiffOpType, TestMessageType, TestResultItem, TestResultState, TestRunProfileBitset } from 'vs/workbench/contrib/testing/common/testTypes';
-import { EditorLineNumberContextMenu, GutterActionsRegistry } from 'vs/workbench/contrib/codeEditor/browser/editorLineNumberMenu';
-import { isMacintosh } from 'vs/base/common/platform';
+import { ITestService, getContextForTestItem, testsInFile } from 'vs/workbench/contrib/testing/common/testService';
+import { IRichLocation, ITestMessage, ITestRunProfile, IncrementalTestCollectionItem, InternalTestItem, TestDiffOpType, TestMessageType, TestResultItem, TestResultState, TestRunProfileBitset } from 'vs/workbench/contrib/testing/common/testTypes';
+import { ITestDecoration as IPublicTestDecoration, ITestingDecorationsService, TestDecorations } from 'vs/workbench/contrib/testing/common/testingDecorations';
+import { ITestingPeekOpener } from 'vs/workbench/contrib/testing/common/testingPeekOpener';
+import { isFailedState, maxPriority } from 'vs/workbench/contrib/testing/common/testingStates';
+import { TestUriType, buildTestUri, parseTestUri } from 'vs/workbench/contrib/testing/common/testingUri';
 
 const MAX_INLINE_MESSAGE_LENGTH = 128;
 
@@ -423,7 +423,7 @@ export class TestingDecorations extends Disposable implements IEditorContributio
 		this._register(this.editor.onDidChangeModel(e => this.attachModel(e.newModelUrl || undefined)));
 		this._register(this.editor.onMouseDown(e => {
 			if (e.target.position && this.currentUri) {
-				const modelDecorations = editor.getModel()?.getDecorationsInRange(Range.fromPositions(e.target.position)) ?? [];
+				const modelDecorations = editor.getModel()?.getLineDecorations(e.target.position.lineNumber) ?? [];
 				if (!modelDecorations.length) {
 					return;
 				}