Improve error formatting in tests

- Replace [object Object] errors with readable messages by using robust error formatting across test suites
- Introduce formatTestError helper and apply it in all catch blocks and error throws
- Update approvalPipelineTests and related suites to utilize improved error extraction for better debugging

src/lib/integrationTests/formatTestError.ts

@@ -0,0 +1,59 @@
+/**
+ * Test Error Formatting Utility
+ * 
+ * Provides robust error formatting for test results to avoid "[object Object]" messages
+ */
+
+/**
+ * Format error for test result display
+ * Handles Error objects, PostgresError objects, and plain objects
+ * 
+ * @param error - Any error value thrown in a test
+ * @returns Formatted, human-readable error string
+ */
+export function formatTestError(error: unknown): string {
+  // Standard Error objects
+  if (error instanceof Error) {
+    return error.message;
+  }
+  
+  // Object-like errors (PostgresError, custom error objects, etc.)
+  if (typeof error === 'object' && error !== null) {
+    const err = error as any;
+    
+    // Try common error message properties
+    if (err.message && typeof err.message === 'string') {
+      return err.message;
+    }
+    
+    // Some errors nest the actual error in an 'error' property
+    if (err.error) {
+      return formatTestError(err.error);
+    }
+    
+    // Some APIs use 'msg' instead of 'message'
+    if (err.msg && typeof err.msg === 'string') {
+      return err.msg;
+    }
+    
+    // Supabase errors might have details
+    if (err.details && typeof err.details === 'string') {
+      return `${err.message || 'Error'}: ${err.details}`;
+    }
+    
+    // Last resort: stringify the entire object
+    try {
+      const stringified = JSON.stringify(error, null, 2);
+      // If it's too long, truncate it
+      return stringified.length > 500 
+        ? stringified.substring(0, 500) + '... (truncated)'
+        : stringified;
+    } catch {
+      // JSON.stringify can fail on circular references
+      return String(error);
+    }
+  }
+  
+  // Primitive values (strings, numbers, etc.)
+  return String(error);
+}

src/lib/integrationTests/helpers/approvalTestHelpers.ts

@@ -8,6 +8,7 @@
 
 import { supabase } from '@/lib/supabaseClient';
 import { TestDataTracker } from '../TestDataTracker';
+import { formatTestError } from '../formatTestError';
 import {
   submitParkCreation, 
   submitRideCreation,
@@ -18,6 +19,9 @@ import {
   submitRideModelCreation
 } from '@/lib/entitySubmissionHelpers';
 
+// Re-export formatTestError for use in test suites
+export { formatTestError } from '../formatTestError';
+
 // ============================================
 // AUTHENTICATION
 // ============================================
@@ -416,7 +420,7 @@ export async function approveSubmission(
     const duration = performance.now() - startTime;
     return {
       success: false,
-      error: error instanceof Error ? error.message : String(error),
+      error: formatTestError(error),
       duration,
     };
   }

src/lib/integrationTests/index.ts

@@ -7,5 +7,6 @@
 export { IntegrationTestRunner } from './testRunner';
 export { allTestSuites } from './suites';
 export { formatResultsAsMarkdown, formatSingleTestAsMarkdown } from './formatters';
+export { formatTestError } from './formatTestError';
 
 export type { TestResult, Test, TestSuite } from './testRunner';

src/lib/integrationTests/suites/approvalPipelineTests.ts

@@ -36,6 +36,7 @@ import {
   verifySubmissionStatus,
   createParkDirectly,
   createRideDirectly,
+  formatTestError,
 } from '../helpers/approvalTestHelpers';
 
 // ============================================
@@ -132,7 +133,7 @@ const parkCreationTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -220,7 +221,7 @@ const rideCreationTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -298,7 +299,7 @@ const companyCreationTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -387,7 +388,7 @@ const rideModelCreationTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -497,7 +498,7 @@ const rideManufacturerCompositeTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -624,7 +625,7 @@ const partialApprovalTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -714,7 +715,7 @@ const idempotencyTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -809,7 +810,7 @@ const parkUpdateTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -897,7 +898,7 @@ const rideUpdateTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -999,7 +1000,7 @@ const rideManufacturerDesignerCompositeTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1097,7 +1098,7 @@ const parkOperatorOwnerCompositeTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1188,7 +1189,7 @@ const lockConflictTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1280,7 +1281,7 @@ const bannedUserTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1373,7 +1374,7 @@ const multipleEditChainTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1478,7 +1479,7 @@ const versionSnapshotIntegrityTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1557,7 +1558,7 @@ const parkPhotoGalleryTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1639,7 +1640,7 @@ const ridePhotoGalleryTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1753,7 +1754,7 @@ const invalidTempRefTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };
@@ -1852,7 +1853,7 @@ const concurrentEditTest: Test = {
         suite: 'Approval Pipeline',
         status: 'fail',
         duration: Date.now() - startTime,
-        error: error instanceof Error ? error.message : String(error),
+        error: formatTestError(error),
         stack: error instanceof Error ? error.stack : undefined,
         timestamp: new Date().toISOString(),
       };

src/lib/integrationTests/suites/performanceTests.ts

@@ -126,7 +126,7 @@ export const performanceTestSuite: TestSuite = {
             .select('id')
             .single();
 
-          if (parkError) throw parkError;
+          if (parkError) throw new Error(`Park creation failed: ${parkError.message}`);
           parkId = park.id;
           tracker.track('parks', parkId);
 
@@ -214,7 +214,7 @@ export const performanceTestSuite: TestSuite = {
 
           const modDuration = Date.now() - modStart;
 
-          if (modError) throw modError;
+          if (modError) throw new Error(`Moderator check failed: ${modError.message}`);
 
           // Test is_user_banned function performance
           const banStart = Date.now();
@@ -225,7 +225,7 @@ export const performanceTestSuite: TestSuite = {
 
           const banDuration = Date.now() - banStart;
 
-          if (banError) throw banError;
+          if (banError) throw new Error(`Ban check failed: ${banError.message}`);
 
           // Performance threshold: 200ms for simple functions
           const threshold = 200;

src/lib/integrationTests/suites/unitConversionTests.ts

@@ -38,7 +38,7 @@ export const unitConversionTestSuite: TestSuite = {
             .select('id')
             .single();
 
-          if (parkError) throw parkError;
+          if (parkError) throw new Error(`Park creation failed: ${parkError.message}`);
           parkId = park.id;
           tracker.track('parks', parkId);
 
@@ -145,7 +145,7 @@ export const unitConversionTestSuite: TestSuite = {
             .select('id')
             .single();
 
-          if (parkError) throw parkError;
+          if (parkError) throw new Error(`Park creation failed: ${parkError.message}`);
           parkId = park.id;
           tracker.track('parks', parkId);
 
@@ -167,7 +167,7 @@ export const unitConversionTestSuite: TestSuite = {
             .select('id')
             .single();
 
-          if (rideError) throw rideError;
+          if (rideError) throw new Error(`Ride creation failed: ${rideError.message}`);
           rideId = ride.id;
           tracker.track('rides', rideId);