[QA-3] Wallet-connected test — trading + rating flow (operator + chrome)

[realproject7]

Overview

End-to-end test of trading and rating flows. Requires operator for MetaMask approvals.

Prerequisites:

• Existing storyline with token (from QA-2)
• Wallet connected with WETH balance

Test flow — Trading:

1. Navigate to /story/[storylineId]
2. Trading widget: enter amount to buy → approve token allowance → operator approves → buy tx → operator approves
3. Verify: balance updates, price changes
4. Try sell flow: enter amount → sell tx → operator approves
5. Verify: balance decreases, refund received

Test flow — Rating:

1. With tokens held, rating widget should show star selector
2. Select rating (e.g., 4 stars) + optional comment
3. Sign message → operator approves MetaMask signature
4. Verify: rating submitted, average updates
5. Without tokens: verify "Hold tokens to rate" prompt appears

Test flow — Donations:

1. Donate widget: enter amount → operator approves tx
2. Verify: donation recorded, shows in story page

Check:

• Buy/sell transactions work end-to-end
• Token balance reflects correctly
• Rating submission with signature works
• Non-holder gate works
• Donation flow works

[realproject7]

QA-3 Smoke Test Report — Trading + Rating + Donation Flow

Date: 2026-03-16
Server: localhost:3000
Network: Base Sepolia (chain ID 84532)
Wallet: 0x0175...4dBf
Storyline: #2 ("QA Test Story")

---

Step Results

Trading Flow

Step	Description	Result	Details
1	Navigate to /story/2	PASS	Page loads, all widgets visible
2	Buy tab active	PASS	Buy tab selected (green highlight)
3	Enter 1 token	PASS	Estimated cost: 0.0000021 WETH (3% slippage) displayed correctly
4	WETH Approval	PASS	approve tx confirmed on-chain
5	Buy (mint)	FAIL	Contract mint reverted — see Bug #1 below
6	Verify balance/price	BLOCKED	Blocked by step 5 failure
7-9	Sell flow	BLOCKED	Blocked by step 5 failure (no tokens to sell)

Rating Flow

Step	Description	Result	Details
10-13	Rate with tokens	BLOCKED	No tokens held (buy failed)
14	No-token gate message	PASS	Shows "Hold storyline tokens to rate this story."

Donation Flow

Step	Description	Result	Details
15	Enter 0.0001 WETH	PASS	Shows "Donating 0.0001 WETH to story #2"
16	Donate tx	FAIL	Contract donate reverted — see Bug #2 below
17	Verify donation	BLOCKED	Blocked by step 16 failure

---

Bugs Found

Bug #1 — Bonding curve mint reverts with gas limit error

• Severity: HIGH (blocks all token purchases)
• Widget: Trade → Buy
• Error: The contract function "mint" reverted with the following reason: exceeds max transaction gas limit
• Contract: 0x5dfA75b0185efBaEF286E80B847ce84ff8a62C2d (MCV2_BOND)
• Function: mint(address token, uint256 tokensToMint, uint256 maxReserveAmount, address receiver)
• Args: (0x14262a...c05ce, 1000000000000000000, 2163000000000, 0x01759...c4dBf)
• Notes: WETH approval tx succeeded. The mint call fails during gas estimation/simulation. Gas estimate exceeds block gas limit. This suggests the contract may not be properly initialized on Base Sepolia, or there's a missing prerequisite (e.g., reserve token not configured correctly in the bonding curve).
• UI behavior: Error displayed correctly in red, Retry button works. Error handling is good.

Bug #2 — Donation contract donate reverts with gas limit error

• Severity: HIGH (blocks all donations)
• Widget: Donate to Writer
• Error: The contract function "donate" reverted with the following reason: exceeds maximum per-transaction gas limit: transaction gas 131250000, limit 25000000
• Contract: 0x05C4d59529807316D6fA09cdaA509adDfe85b474
• Function: donate(uint256 storylineId, uint256 amount) args: (2, 100000000000000)
• Notes: Same class of issue as Bug [P0-1] Scaffold Next.js App #1 — gas estimation returns 131M gas (vs 25M block limit). Likely the donation contract requires WETH approval first, or there's a contract initialization issue on testnet.
• UI behavior: Error displayed correctly, Retry button works. Error handling is good.

---

UI Quality Notes (Positive)

Despite the contract failures, the UI/UX handled all errors gracefully:

• Error messages display clearly in red text
• Retry buttons appear and work correctly
• Form state resets properly after errors
• Estimated costs calculate and display correctly
• Slippage tolerance shown (3%)
• Rating gate message ("Hold storyline tokens to rate") shows correctly when no tokens held
• All widgets render with correct layout and styling

---

Summary

Category	Pass	Fail	Blocked
UI/Widget rendering	6/6	0	0
Trading (buy)	3/5	1	1
Trading (sell)	0/3	0	3
Rating (with tokens)	0/4	0	4
Rating (no tokens gate)	1/1	0	0
Donation	1/3	1	1
Error handling	3/3	0	0

2 contract-level bugs found (both HIGH — gas limit reverts blocking trading and donations).
0 UI bugs found — all frontend components render and handle errors correctly.

Recommendation: Investigate contract deployment on Base Sepolia. Both MCV2_BOND.mint() and donation contract .donate() fail gas simulation. Check:

1. Reserve token configuration in bonding curve
2. WETH approval to donation contract
3. Contract initialization state on testnet

🤖 Generated with Claude Code

[realproject7]

Correction to QA-3 Report

The donation tx hex data shared by operator was from the MetaMask modal before approval — the txs were not confirmed. The donation flow failed at gas simulation, same as the trading flow.

Updated results for Steps 15-17:

Step	Description	Result	Details
15	Enter 0.0001 WETH	PASS	Shows "Donating 0.0001 WETH to story #2" correctly
16	Donate tx	FAIL	Contract donate reverted during gas simulation — "exceeds maximum per-transaction gas limit: tx gas 131250000, limit 25000000"
17	Verify donation	BLOCKED	Blocked by step 16

Reader Dashboard confirms: 0 donations, "No donations yet."

Both bugs (trading mint + donation) are confirmed as contract-level gas simulation failures on Base Sepolia. No UI bugs found — error handling is clean across all widgets.

🤖 Generated with Claude Code

[realproject7]

QA-3 Report — Trading, Rating & Donation (Base Sepolia)

Tester: T1 (manual, MetaMask)
Network: Base Sepolia
Story: /story/2
Wallet: 0x017596303EE2F3C1250Aa67d2d33DBae1D1c4dBf

Results

Step	Status	Notes
Buy (mint)	✅ PASS	tx 0xd968380f... — 2 tokens minted, 1.3M gas
Sell (burn)	✅ PASS	tx 0xa859b4f5... — 1 token burned, reader dashboard updated (2→1)
Donate	⚠️ PARTIAL	tx 0x12e78a51... confirmed on-chain, but /api/index/donation returned 502 (race condition). Manual re-trigger succeeded.
Rate (submit)	✅ PASS	3 stars + "generic story" comment, signed via MetaMask, appears in recent ratings
Non-holder gate	⏭️ SKIPPED	Would need separate wallet with 0 tokens

Bugs Found (tickets created)

• [Bug] Tx hash in Trade/Donate widgets should link to block explorer #152 — Tx hash links not clickable in TradingWidget/DonateWidget
• [Bug] Indexer race condition — 502 on receipt fetch after tx confirms #154 — Donation indexer race condition (502 on immediate call)
• [Bug] DeadlineCountdown hydration mismatch persists #155 — DeadlineCountdown hydration mismatch
• [QA-Bug] Rating UI — replace number buttons and text stars with proper star icons #156 — Rating UI needs proper star icons (not number buttons / text asterisks)

Gas Estimation Issue (fixed in PR #153)

MetaMask returned 131M gas estimate for donate/mint/burn on Base Sepolia (exceeds 25M block limit). Root cause: MetaMask's gas estimation logic, not our contracts. Fixed by adding explicit gas parameter to all writeContractAsync calls.

Summary

Core trading loop (buy → sell → donate → rate) works end-to-end on testnet. Four UI/UX bugs filed. Ready to proceed to QA-4.