diff --git a/packages/plugin-ext/src/common/plugin-api-rpc-model.ts b/packages/plugin-ext/src/common/plugin-api-rpc-model.ts
index 7a4ecdae2f2b4..de2450bff21bb 100644
--- a/packages/plugin-ext/src/common/plugin-api-rpc-model.ts
+++ b/packages/plugin-ext/src/common/plugin-api-rpc-model.ts
@@ -72,6 +72,17 @@ export interface Range {
     readonly endColumn: number;
 }
 
+export interface Position {
+    /**
+     * line number (starts at 1)
+     */
+    readonly lineNumber: number,
+    /**
+     * column (starts at 1)
+     */
+    readonly column: number
+}
+
 export { MarkdownStringDTO as MarkdownString };
 
 export interface SerializedDocumentFilter {
diff --git a/packages/plugin-ext/src/common/test-types.ts b/packages/plugin-ext/src/common/test-types.ts
index af87290c87672..abaaf91c1407d 100644
--- a/packages/plugin-ext/src/common/test-types.ts
+++ b/packages/plugin-ext/src/common/test-types.ts
@@ -25,7 +25,7 @@
 
 import { MarkdownString } from '@theia/core/lib/common/markdown-rendering';
 import { UriComponents } from './uri-components';
-import { Location, Range } from './plugin-api-rpc-model';
+import { Location, Range, Position } from './plugin-api-rpc-model';
 import { isObject } from '@theia/core';
 
 export enum TestRunProfileKind {
@@ -74,17 +74,30 @@ export interface TestFailureDTO extends TestStateChangeDTO {
     readonly duration?: number;
 }
 
+export namespace TestFailureDTO {
+    export function is(ref: unknown): ref is TestFailureDTO {
+        return isObject<TestFailureDTO>(ref)
+            && ref.state === (TestExecutionState.Failed || TestExecutionState.Errored);
+    }
+}
 export interface TestSuccessDTO extends TestStateChangeDTO {
     readonly state: TestExecutionState.Passed;
     readonly duration?: number;
 }
 
+export interface TestMessageStackFrameDTO {
+    uri?: UriComponents;
+    position?: Position;
+    label: string;
+}
+
 export interface TestMessageDTO {
     readonly expected?: string;
     readonly actual?: string;
     readonly location?: Location;
     readonly message: string | MarkdownString;
     readonly contextValue?: string;
+    readonly stackTrace?: TestMessageStackFrameDTO[];
 }
 
 export interface TestItemDTO {
diff --git a/packages/plugin-ext/src/main/browser/test-main.ts b/packages/plugin-ext/src/main/browser/test-main.ts
index cd50fd4813ddf..8759f46832435 100644
--- a/packages/plugin-ext/src/main/browser/test-main.ts
+++ b/packages/plugin-ext/src/main/browser/test-main.ts
@@ -16,20 +16,25 @@
 
 import { SimpleObservableCollection, TreeCollection, observableProperty } from '@theia/test/lib/common/collections';
 import {
-    TestController, TestItem, TestOutputItem, TestRun, TestRunProfile, TestService, TestState, TestStateChangedEvent
+    TestController, TestItem, TestOutputItem, TestRun, TestRunProfile, TestService, TestState, TestStateChangedEvent, TestMessage,
+    TestFailure, TestMessageStackFrame
 } from '@theia/test/lib/browser/test-service';
 import { TestExecutionProgressService } from '@theia/test/lib/browser/test-execution-progress-service';
 import { AccumulatingTreeDeltaEmitter, CollectionDelta, DeltaKind, TreeDelta, TreeDeltaBuilder } from '@theia/test/lib/common/tree-delta';
-import { Emitter, Location, Range } from '@theia/core/shared/vscode-languageserver-protocol';
-import { Range as PluginRange, Location as PluginLocation } from '../../common/plugin-api-rpc-model';
+import { Emitter, Location, Range, Position } from '@theia/core/shared/vscode-languageserver-protocol';
+import { Range as PluginRange, Location as PluginLocation, Position as PluginPosition } from '../../common/plugin-api-rpc-model';
 import { MarkdownString } from '@theia/core/lib/common/markdown-rendering';
 import { CancellationToken, Disposable, Event, URI } from '@theia/core';
 import { MAIN_RPC_CONTEXT, TestControllerUpdate, TestingExt, TestingMain } from '../../common';
 import { RPCProtocol } from '../../common/rpc-protocol';
 import { interfaces } from '@theia/core/shared/inversify';
-import { TestExecutionState, TestItemDTO, TestItemReference, TestOutputDTO, TestRunDTO, TestRunProfileDTO, TestStateChangeDTO } from '../../common/test-types';
+import {
+    TestExecutionState, TestFailureDTO, TestItemDTO, TestItemReference, TestMessageDTO, TestMessageStackFrameDTO, TestOutputDTO,
+    TestRunDTO, TestRunProfileDTO, TestStateChangeDTO
+} from '../../common/test-types';
 import { TestRunProfileKind } from '../../plugin/types-impl';
 import { CommandRegistryMainImpl } from './command-registry-main';
+import { UriComponents } from '../../common/uri-components';
 
 export class TestItemCollection extends TreeCollection<string, TestItemImpl, TestItemImpl | TestControllerImpl> {
     override add(item: TestItemImpl): TestItemImpl | undefined {
@@ -333,8 +338,10 @@ class TestRunImpl implements TestRun {
             const item = this.controller.findItem(change.itemPath);
             if (item) {
                 const oldState = this.testStates.get(item);
-                this.testStates.set(item, change);
-                stateEvents.push({ test: item, oldState: oldState, newState: change });
+                // convert back changes (for example, convert back location from DTO)
+                const convertedState = convertTestState(change);
+                this.testStates.set(item, convertedState);
+                stateEvents.push({ test: item, oldState: oldState, newState: convertedState});
             }
         });
         const outputEvents: [TestItem | undefined, TestOutputItem][] = [];
@@ -368,6 +375,55 @@ class TestRunImpl implements TestRun {
     }
 }
 
+function convertTestState(testStateDto: TestStateChangeDTO): TestState | TestFailure {
+    if (TestFailureDTO.is(testStateDto)) {
+        return {
+            state: testStateDto.state,
+            messages: testStateDto.messages.map(message => convertTestMessage(message)),
+            duration: testStateDto.duration
+        };
+    }
+    return {
+        state: testStateDto.state
+    };
+}
+
+function convertTestMessage(dto: TestMessageDTO): TestMessage {
+    return {
+        message: dto.message,
+        actual: dto.actual,
+        location: dto.location ? convertLocation(dto.location) : undefined,
+        contextValue: dto.contextValue,
+        expected: dto.expected,
+        stackTrace: dto.stackTrace && dto.stackTrace.map(stackFrame => convertStackFrame(stackFrame))
+    };
+}
+
+function convertStackFrame(dto: TestMessageStackFrameDTO): TestMessageStackFrame {
+    return {
+        label: dto.label,
+        position: convertPosition(dto.position),
+        uri: convertURI(dto.uri),
+    };
+}
+
+function convertPosition(position: PluginPosition | undefined): Position | undefined {
+    if (!position) {
+        return undefined;
+    }
+    return {
+        line: position.lineNumber - 1,
+        character: position.column - 1
+    };
+}
+
+function convertURI(uri: UriComponents | undefined): URI | undefined {
+    if (!uri) {
+        return undefined;
+    }
+    return URI.fromComponents(uri);
+}
+
 function convertLocation(location: PluginLocation | undefined): Location | undefined {
     if (!location) {
         return undefined;
diff --git a/packages/plugin-ext/src/plugin/plugin-context.ts b/packages/plugin-ext/src/plugin/plugin-context.ts
index 8a36492244edc..166387629d234 100644
--- a/packages/plugin-ext/src/plugin/plugin-context.ts
+++ b/packages/plugin-ext/src/plugin/plugin-context.ts
@@ -187,6 +187,7 @@ import {
     TestTag,
     TestRunRequest,
     TestMessage,
+    TestMessageStackFrame,
     ExtensionKind,
     InlineCompletionItem,
     InlineCompletionList,
@@ -1460,6 +1461,7 @@ export function createAPIFactory(
             TestTag,
             TestRunRequest,
             TestMessage,
+            TestMessageStackFrame,
             ExtensionKind,
             InlineCompletionItem,
             InlineCompletionList,
diff --git a/packages/plugin-ext/src/plugin/tests.ts b/packages/plugin-ext/src/plugin/tests.ts
index 101532e86b2ed..8608eb10a6c8b 100644
--- a/packages/plugin-ext/src/plugin/tests.ts
+++ b/packages/plugin-ext/src/plugin/tests.ts
@@ -40,10 +40,11 @@ import { TestItemImpl, TestItemCollection } from './test-item';
 import { AccumulatingTreeDeltaEmitter, TreeDelta } from '@theia/test/lib/common/tree-delta';
 import {
     TestItemDTO, TestOutputDTO, TestExecutionState, TestRunProfileDTO,
-    TestRunProfileKind, TestRunRequestDTO, TestStateChangeDTO, TestItemReference, TestMessageArg, TestMessageDTO
+    TestRunProfileKind, TestRunRequestDTO, TestStateChangeDTO, TestItemReference, TestMessageArg, TestMessageDTO,
+    TestMessageStackFrameDTO
 } from '../common/test-types';
 import { ChangeBatcher, observableProperty } from '@theia/test/lib/common/collections';
-import { TestRunRequest } from './types-impl';
+import { TestRunRequest, URI } from './types-impl';
 import { MarkdownString } from '../common/plugin-api-rpc-model';
 
 type RefreshHandler = (token: theia.CancellationToken) => void | theia.Thenable<void>;
@@ -374,7 +375,16 @@ export class TestingExtImpl implements TestingExt {
             actualOutput: testMessage.actual,
             expectedOutput: testMessage.expected,
             contextValue: testMessage.contextValue,
-            location: testMessage.location ? Convert.toLocation(testMessage.location) : undefined
+            location: testMessage.location ? Convert.toLocation(testMessage.location) : undefined,
+            stackTrace: testMessage.stackTrace ? testMessage.stackTrace.map(frame => this.toStackFrame(frame)) : undefined
+        };
+    }
+
+    toStackFrame(stackFrame: TestMessageStackFrameDTO): theia.TestMessageStackFrame {
+        return {
+            label: stackFrame.label,
+            position: Convert.toPosition(stackFrame.position),
+            uri: stackFrame.uri ? URI.revive(stackFrame.uri) : undefined
         };
     }
 
diff --git a/packages/plugin-ext/src/plugin/type-converters.ts b/packages/plugin-ext/src/plugin/type-converters.ts
index 557b412ed4e43..ceb95a09f02cf 100644
--- a/packages/plugin-ext/src/plugin/type-converters.ts
+++ b/packages/plugin-ext/src/plugin/type-converters.ts
@@ -34,7 +34,7 @@ import { BinaryBuffer } from '@theia/core/lib/common/buffer';
 import { CellRange, isTextStreamMime } from '@theia/notebook/lib/common';
 import { MarkdownString as MarkdownStringDTO } from '@theia/core/lib/common/markdown-rendering';
 
-import { TestItemDTO, TestMessageDTO } from '../common/test-types';
+import { TestItemDTO, TestMessageDTO, TestMessageStackFrameDTO } from '../common/test-types';
 import { PluginIconPath } from './plugin-icon-path';
 
 const SIDE_GROUP = -2;
@@ -134,12 +134,21 @@ export function fromRange(range: theia.Range | undefined): model.Range | undefin
         endColumn: end.character + 1
     };
 }
-
-export function fromPosition(position: types.Position | theia.Position): Position {
+export function fromPosition(position: types.Position | theia.Position): Position;
+export function fromPosition(position: types.Position | theia.Position | undefined): Position | undefined;
+export function fromPosition(position: types.Position | theia.Position | undefined): Position | undefined {
+    if (!position) {
+        return undefined;
+    }
     return { lineNumber: position.line + 1, column: position.character + 1 };
 }
 
-export function toPosition(position: Position): types.Position {
+export function toPosition(position: Position): types.Position;
+export function toPosition(position: Position | undefined): types.Position | undefined;
+export function toPosition(position: Position | undefined): types.Position | undefined {
+    if (!position) {
+        return undefined;
+    }
     return new types.Position(position.lineNumber - 1, position.column - 1);
 }
 
@@ -1681,11 +1690,22 @@ export namespace TestMessage {
             message: fromMarkdown(message.message)!,
             expected: message.expectedOutput,
             actual: message.actualOutput,
-            contextValue: message.contextValue
+            contextValue: message.contextValue,
+            stackTrace: message.stackTrace && message.stackTrace.map(frame => TestMessageStackFrame.from(frame))
         }];
     }
 }
 
+export namespace TestMessageStackFrame {
+    export function from(stackTrace: theia.TestMessageStackFrame): TestMessageStackFrameDTO {
+        return {
+            label: stackTrace.label,
+            position: stackTrace.position && fromPosition(stackTrace.position),
+            uri: stackTrace?.uri
+        };
+    }
+}
+
 export namespace TestItem {
     export function from(test: theia.TestItem): TestItemDTO {
         return <TestItemDTO>TestItem.fromPartial(test);
diff --git a/packages/plugin-ext/src/plugin/types-impl.ts b/packages/plugin-ext/src/plugin/types-impl.ts
index 1aee501f2e810..d7a0734259657 100644
--- a/packages/plugin-ext/src/plugin/types-impl.ts
+++ b/packages/plugin-ext/src/plugin/types-impl.ts
@@ -3036,7 +3036,7 @@ export class DebugThread implements theia.DebugThread {
 }
 
 export class DebugStackFrame implements theia.DebugStackFrame {
-      constructor(readonly session: theia.DebugSession, readonly threadId: number, readonly frameId: number) { }
+    constructor(readonly session: theia.DebugSession, readonly threadId: number, readonly frameId: number) { }
 }
 
 @es5ClassCompat
@@ -3350,6 +3350,7 @@ export class TestMessage implements theia.TestMessage {
     public actualOutput?: string;
     public location?: theia.Location;
     public contextValue?: string;
+    public stackTrace?: theia.TestMessageStackFrame[] | undefined;
 
     public static diff(message: string | theia.MarkdownString, expected: string, actual: string): theia.TestMessage {
         const msg = new TestMessage(message);
@@ -3366,6 +3367,14 @@ export class TestCoverageCount {
     constructor(public covered: number, public total: number) { }
 }
 
+export class TestMessageStackFrame implements theia.TestMessageStackFrame {
+    constructor(
+        public label: string,
+        public uri?: theia.Uri,
+        public position?: Position
+    ) { }
+}
+
 @es5ClassCompat
 export class FileCoverage {
 
diff --git a/packages/plugin/src/theia.d.ts b/packages/plugin/src/theia.d.ts
index 4ce0f20f46c2a..3cc49e47cb6e4 100644
--- a/packages/plugin/src/theia.d.ts
+++ b/packages/plugin/src/theia.d.ts
@@ -16573,6 +16573,34 @@ export module '@theia/plugin' {
         error: string | MarkdownString | undefined;
     }
 
+    /**
+     * A stack frame found in the {@link TestMessage.stackTrace}.
+     */
+    export class TestMessageStackFrame {
+        /**
+         * The location of this stack frame. This should be provided as a URI if the
+         * location of the call frame can be accessed by the editor.
+         */
+        uri?: Uri;
+
+        /**
+         * Position of the stack frame within the file.
+         */
+        position?: Position;
+
+        /**
+         * The name of the stack frame, typically a method or function name.
+         */
+        label: string;
+
+        /**
+         * @param label The name of the stack frame
+         * @param file The file URI of the stack frame
+         * @param position The position of the stack frame within the file
+         */
+        constructor(label: string, uri?: Uri, position?: Position);
+    }
+
     /**
      * Message associated with the test state. Can be linked to a specific
      * source range -- useful for assertion failures, for example.
@@ -16629,6 +16657,11 @@ export module '@theia/plugin' {
          */
         contextValue?: string;
 
+        /**
+         * The stack trace associated with the message or failure.
+         */
+        stackTrace?: TestMessageStackFrame[];
+
         /**
          * Creates a new TestMessage that will present as a diff in the editor.
          * @param message Message to display to the user.
diff --git a/packages/test/src/browser/test-service.ts b/packages/test/src/browser/test-service.ts
index 210ca558c58c7..df43d6af1fa17 100644
--- a/packages/test/src/browser/test-service.ts
+++ b/packages/test/src/browser/test-service.ts
@@ -15,7 +15,7 @@
 // *****************************************************************************
 
 import { CancellationToken, ContributionProvider, Disposable, Emitter, Event, QuickPickService, isObject, nls } from '@theia/core/lib/common';
-import { CancellationTokenSource, Location, Range } from '@theia/core/shared/vscode-languageserver-protocol';
+import { CancellationTokenSource, Location, Range, Position } from '@theia/core/shared/vscode-languageserver-protocol';
 import { CollectionDelta, TreeDelta } from '../common/tree-delta';
 import { MarkdownString } from '@theia/core/lib/common/markdown-rendering';
 import URI from '@theia/core/lib/common/uri';
@@ -56,9 +56,16 @@ export enum TestExecutionState {
 export interface TestMessage {
     readonly expected?: string;
     readonly actual?: string;
-    readonly location: Location;
+    readonly location?: Location;
     readonly message: string | MarkdownString;
     readonly contextValue?: string;
+    readonly stackTrace?: TestMessageStackFrame[];
+}
+
+export interface TestMessageStackFrame {
+    readonly label: string,
+    readonly uri?: URI,
+    readonly position?: Position,
 }
 
 export namespace TestMessage {
@@ -367,7 +374,7 @@ export class DefaultTestService implements TestService {
 
     selectDefaultProfile(): void {
         this.pickProfileKind().then(kind => {
-           const profiles = this.getControllers().flatMap(c => c.testRunProfiles).filter(profile => profile.kind === kind);
+            const profiles = this.getControllers().flatMap(c => c.testRunProfiles).filter(profile => profile.kind === kind);
             this.pickProfile(profiles, nls.localizeByDefault('Pick a test profile to use')).then(activeProfile => {
                 if (activeProfile) {
                     // only change the default for the controller containing selected profile for default and its profiles with same kind
diff --git a/packages/test/src/browser/view/test-result-widget.ts b/packages/test/src/browser/view/test-result-widget.ts
index 4df73d7914e97..07b2a7412ba09 100644
--- a/packages/test/src/browser/view/test-result-widget.ts
+++ b/packages/test/src/browser/view/test-result-widget.ts
@@ -14,13 +14,17 @@
 // SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
 // *****************************************************************************
 
-import { BaseWidget, Message, codicon } from '@theia/core/lib/browser';
+import { BaseWidget, LabelProvider, Message, OpenerService, codicon } from '@theia/core/lib/browser';
 import { inject, injectable, postConstruct } from '@theia/core/shared/inversify';
 import { TestOutputUIModel } from './test-output-ui-model';
 import { DisposableCollection, nls } from '@theia/core';
-import { TestFailure, TestMessage } from '../test-service';
+import { TestFailure, TestMessage, TestMessageStackFrame } from '../test-service';
 import { MarkdownRenderer } from '@theia/core/lib/browser/markdown-rendering/markdown-renderer';
 import { MarkdownString } from '@theia/core/lib/common/markdown-rendering';
+import { URI } from '@theia/core/lib/common/uri';
+import { FileService } from '@theia/filesystem/lib/browser/file-service';
+import { NavigationLocationService } from '@theia/editor/lib/browser/navigation/navigation-location-service';
+import { NavigationLocation, Position } from '@theia/editor/lib/browser/navigation/navigation-location';
 
 @injectable()
 export class TestResultWidget extends BaseWidget {
@@ -29,6 +33,10 @@ export class TestResultWidget extends BaseWidget {
 
     @inject(TestOutputUIModel) uiModel: TestOutputUIModel;
     @inject(MarkdownRenderer) markdownRenderer: MarkdownRenderer;
+    @inject(OpenerService) openerService: OpenerService;
+    @inject(FileService) fileService: FileService;
+    @inject(NavigationLocationService) navigationService: NavigationLocationService;
+    @inject(LabelProvider) protected readonly labelProvider: LabelProvider;
 
     protected toDisposeOnRender = new DisposableCollection();
     protected input: TestMessage[] = [];
@@ -83,6 +91,35 @@ export class TestResultWidget extends BaseWidget {
             } else {
                 this.content.append(this.node.ownerDocument.createTextNode(message.message));
             }
+            if (message.stackTrace) {
+                message.stackTrace.map(frame => this.renderFrame(frame));
+            }
+        });
+    }
+
+    renderFrame(stackFrame: TestMessageStackFrame): void {
+        const frameElement = this.node.ownerDocument.createElement('div');
+        frameElement.append(this.node.ownerDocument.createTextNode(stackFrame.label));
+
+        // Add URI information as clickable links
+        if (stackFrame.uri) {
+
+            const uri = stackFrame.uri;
+            frameElement.append(' from ');
+            const link = this.node.ownerDocument.createElement('a');
+            link.textContent = `${this.labelProvider.getName(uri)}`;
+            link.title = `${uri}`;
+            link.onclick = () => this.openUriInWorkspace(uri, stackFrame.position);
+            frameElement.append(link);
+        }
+        this.content.append(frameElement);
+    }
+
+    async openUriInWorkspace(uri: URI, position?: Position): Promise<void> {
+        this.fileService.resolve(uri).then(stat => {
+            if (stat.isFile) {
+                this.navigationService.reveal(NavigationLocation.create(uri, position ?? { line: 0, character: 0 }));
+            }
         });
     }