Show stacktrace on test error

Fixes #424

CHANGELOG.md

@@ -4,6 +4,8 @@ Changes to Calva.
 
 ## [Unreleased]
 
+- [Test runner does not show stacktrace on error](https://github.com/BetterThanTomorrow/calva/issues/424)
+
 ## [2.0.307] - 2022-10-11
 
 - [Support user level `~/.config/calva/config.edn`](https://github.com/BetterThanTomorrow/calva/issues/1887)

src/nrepl/index.ts

@@ -515,6 +515,24 @@ export class NReplSession {
     });
   }
 
+  testStacktrace(ns: string, test: string, index: number) {
+    return new Promise<any>((resolve, reject) => {
+      let id = this.client.nextId;
+      this.messageHandlers[id] = (msg) => {
+        resolve(msg);
+        return true;
+      };
+      this.client.write({
+        op: 'test-stacktrace',
+        id,
+        session: this.sessionId,
+        ns,
+        var: test,
+        index: index,
+      });
+    });
+  }
+
   testNs(ns: string) {
     return this.testVarQuery({
       'ns-query': {

src/testRunner.ts

@@ -168,7 +168,7 @@ function useTestExplorer(): boolean | undefined {
   return vscode.workspace.getConfiguration('calva').get('useTestExplorer');
 }
 
-function reportTests(
+async function reportTests(
   controller: vscode.TestController,
   session: NReplSession,
   possibleResults: cider.TestResults[]
@@ -208,7 +208,15 @@ function reportTests(
           cider.cleanUpWhiteSpace(a);
 
           const messages = cider.detailedMessage(a);
-          if (messages) {
+
+          if (a.type == 'error') {
+            const stackTrace = await session.testStacktrace(ns, test, a.index);
+
+            outputWindow.saveStacktrace(stackTrace.stacktrace);
+            outputWindow.append(messages, (_, afterResultLocation) => {
+              outputWindow.markLastStacktraceRange(afterResultLocation);
+            });
+          } else if (messages) {
             outputWindow.append(messages);
           }