Test a card feed and the cashback rate it applies

The flow under test

The test covers the stated rule, existing transactions on both sides of it, and a new one that has to be classified.

• The rules are published - three percent dining, one percent groceries, nothing on transit.
• An earning transaction - groceries with a cashback badge.
• A non-earning transaction - transit explicitly badged as no cashback.
• A new purchase - dining at $58.40 earning $1.75, which is three percent.

The transit assertion is the one that proves the rule is enforced rather than universally applied. A card that pays cashback on everything satisfies every positive assertion in the file.

The test file

The new purchase is asserted for its merchant, amount, category and cashback together, since the cashback is only correct if the category it was derived from is.

---
mode: testing
url: https://my-testing-repo-main.vercel.app/venmo-clone-app/card?reset=true
max_steps: 40
tags: [venmo, fintech, cards]
---

# Venmoo 22.4: Card transaction feed

Catalog objective: verify a card purchase appears with its cashback tag.
Key assertion: the transaction is listed with the correct merchant.

## Verify the existing card feed
Verify the transactions list shows "Corner Grocer" at "$42.18" in the Groceries category with a cashback badge, and "Metro Transit" at "$2.75" in Transit with a "No cashback" badge.

## Verify the cashback rules are stated
Verify the rewards card states "3% dining · 1% groceries · no cashback on transit".

## Make a card purchase
Click "Simulate a $58.40 purchase at Nonna's Trattoria" and verify a new transaction appears at the top of the feed.

## Verify the new transaction carries the right merchant and cashback tag
Verify the newest row reads "Nonna's Trattoria" at "$58.40" in the Dining category with a cashback badge of "$1.75", which is 3% of the purchase.

The file states the arithmetic explicitly, that $1.75 is three percent of $58.40, so the expected figure can be checked by a reader without recomputing it.

Step by step coverage

Existing state, the rules, an action, and the result.

Asserting the new transaction appears at the top of the feed is a small ordering check that catches a transaction inserted correctly but sorted wrongly.

Running it

kane-cli testmd run tests/venmo/card-transaction-feed_test.md

Add a purchase in the transit category, since earning nothing is a result that has to be produced deliberately rather than by omission.

Classification rules drift as merchant data changes underneath them. Running Kane CLI in CI covers regular checks, and Kane CLI as a QA agent covers building a rewards suite.