Add E2E integration tests to prevent broken code from reaching production

Issue #66 | State: OPEN | Created: 2026-01-20T00:31:53Z

Assignees: linked0

Updated: 2026-01-20T00:41:19Z | Closed: N/A

Background

e2e-test-address-flow.md

Currently there are no integration tests that verify the full trading flow works end-to-end. This allows broken code to go undetected until manual testing or production.

Problem

Without E2E tests, we cannot catch:

• Hardcoded network references that break other environments
• Nonce management issues in blockchain transactions
• Contract address mismatches between SDK and deployed contracts
• Database and blockchain state desync
• API endpoint regressions

Solution

Add integration tests that run the full flow against a local Hardhat blockchain:

1. Start Hardhat node
2. Deploy contracts
3. Start API server with localhost config
4. Run tests: create market → trade → resolve → claim

Benefits

• Catch breaking changes before merge
• Verify blockchain + database + API work together
• Prevent regressions in critical trading flows
• Confidence when refactoring code

Test Coverage

• Basic trading flow (buy/sell outcome tokens)
• Market creation via API
• Market resolution and claiming
• Liquidity and limit orders

Related

• Design doc: e2e-test-address-flow.md

Comments

@linked0 — 2026-01-20T00:34:21Z

Need to fix following error when pushing the working branch. I bypassed the error for now using git push -f --no-verify.

nostra-server git:(integration-test) git push -f
📦 Running build...
[api]: Process started
[api]: src/__tests__/integration/test-setup.ts(92,17): error TS2339: Property 'success' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(93,60): error TS2339: Property 'error' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(97,26): error TS2339: Property 'market' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(98,29): error TS2339: Property 'market' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(99,28): error TS2339: Property 'market' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(100,30): error TS2339: Property 'outcomes' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(101,29): error TS2339: Property 'outcomes' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(102,28): error TS2339: Property 'outcomes' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(103,27): error TS2339: Property 'outcomes' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(128,17): error TS2339: Property 'success' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(129,60): error TS2339: Property 'error' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(133,25): error TS2339: Property 'data' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(134,24): error TS2339: Property 'data' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(156,25): error TS2339: Property 'success' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(157,33): error TS2339: Property 'transactionHash' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(183,17): error TS2339: Property 'success' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(184,62): error TS2339: Property 'error' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(188,27): error TS2339: Property 'claimable' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(189,33): error TS2339: Property 'estimatedPayout' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(190,26): error TS2339: Property 'balances' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(213,25): error TS2339: Property 'success' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(214,29): error TS2339: Property 'totalShares' does not exist on type 'unknown'.
[api]: src/__tests__/integration/test-setup.ts(215,32): error TS2339: Property 'expectedPayout' does not exist on type 'unknown'.
[api]: Process exited (exit code 1), completed in 1s 150ms