TestForge AI Execution Report

Evidence: Requirement Section 4.4 (req-refund-amount-full) states partial refunds are not supported in v1.0 and any refund not matching the original amount must be rejected. API spec RefundRequest has an optional amount field for partial refunds and includes a 'partial_refund' example, and PaymentStatus includes PARTIALLY_REFUNDED.

Location: POST /api/payments/{id}/refund - RefundRequest

Requirement: Section 4.4 (req-refund-amount-full)

Spec: components/schemas/RefundRequest/properties/amount, components/schemas/PaymentStatus

Confidence: HIGH

Evidence: Requirement Section 2.1 (req-amount-range) states maximum amount is AUD 100,000.00 (inclusive). OpenAPI CreatePaymentRequest.amount has maximum: 999999.99, allowing values between 100,000.01 and 999,999.99 that should be rejected.

Location: POST /api/payments - CreatePaymentRequest.amount

Requirement: Section 2.1 (req-amount-range)

Spec: components/schemas/CreatePaymentRequest/properties/amount/maximum

Confidence: HIGH

Evidence: Requirement Section 2.1 (req-amount-range) states minimum amount is AUD 1.00 (inclusive). OpenAPI CreatePaymentRequest.amount has minimum: 0.01, allowing values between 0.01 and 0.99 that should be rejected.

Location: POST /api/payments - CreatePaymentRequest.amount

Requirement: Section 2.1 (req-amount-range)

Spec: components/schemas/CreatePaymentRequest/properties/amount/minimum

Confidence: HIGH

Evidence: Requirement Section 2.4 (req-payment-creation-response) mandates the 201 response body include: id, amount, currency, payerId, status, createdAt. PaymentResponse schema does not include payerId.

Location: POST /api/payments - PaymentResponse

Requirement: Section 2.4 (req-payment-creation-response)

Spec: components/schemas/PaymentResponse

Confidence: HIGH

Evidence: Requirement Section 4.3 (req-refund-ownership) and Section 5.2 (req-authz-refund-payment) mandate that only the original payerId can initiate a refund, returning HTTP 403 with error code FORBIDDEN_OWNERSHIP for other users. API spec POST /api/payments/{id}/refund has no 403 response and no authorization rule.

Location: POST /api/payments/{id}/refund

Requirement: Section 4.3 (req-refund-ownership), Section 5.2 (req-authz-refund-payment)

Spec: paths//api/payments/{id}/refund/post/responses

Confidence: HIGH

Evidence: Requirement Section 4.2 (req-refund-idempotency) mandates HTTP 422 with error code ALREADY_REFUNDED when refunding an already-refunded payment. API spec 422 response has a generic ErrorResponse with no specific error codes enumerated; ALREADY_REFUNDED is not mentioned.

Location: POST /api/payments/{id}/refund

Requirement: Section 4.2 (req-refund-idempotency)

Spec: paths//api/payments/{id}/refund/post/responses/422

Confidence: HIGH

Evidence: Requirement Section 5.2 (req-authz-query-payment) states only the original payer or admin can query a payment, implying HTTP 403 for unauthorized users. GET /api/payments/{id} only defines 200 and 404 responses with no 403.

Location: GET /api/payments/{id}

Requirement: Section 5.2 (req-authz-query-payment)

Spec: paths//api/payments/{id}/get/responses

Confidence: HIGH

Evidence: Requirement Section 5.1 (req-auth-bearer-token) mandates Bearer token authentication on all endpoints with HTTP 401 and error code UNAUTHORIZED for missing/invalid tokens. The OpenAPI spec defines no securitySchemes, no security requirements, and no 401 responses on any endpoint.

Location: All endpoints

Requirement: Section 5.1 (req-auth-bearer-token)

Spec: components/securitySchemes (absent), paths (no 401 responses)

Confidence: HIGH

Evidence: Requirement Sections 2.3, 2.4, 4.3, 5.2 (req-required-field-payerId, req-payment-creation-response, req-refund-ownership) require a payerId field representing the authenticated user. OpenAPI CreatePaymentRequest uses merchantId and customerId; PaymentResponse has no payerId field.

Location: POST /api/payments - CreatePaymentRequest and PaymentResponse

Requirement: Section 2.3 (req-required-field-payerId), Section 2.4 (req-payment-creation-response), Section 4.3 (req-refund-ownership)

Spec: components/schemas/CreatePaymentRequest, components/schemas/PaymentResponse

Confidence: HIGH

Evidence: Requirement Section 2.4 (req-initial-status) states initial status can be PENDING or COMPLETED depending on payment method. API spec POST /api/payments description states 'Returns COMPLETED immediately (mock behaviour)', implying only COMPLETED as initial state.

Location: POST /api/payments

Requirement: Section 2.4 (req-initial-status)

Spec: paths//api/payments/post/description

Confidence: HIGH

Evidence: Requirement Section 2.2 (req-currency-enum) restricts currency to AUD, USD, EUR. OpenAPI currency field uses pattern '^[A-Z]{3}$' with no enum constraint, and examples use CNY, which is not in the allowed list.

Location: POST /api/payments - CreatePaymentRequest.currency

Requirement: Section 2.2 (req-currency-enum)

Spec: components/schemas/CreatePaymentRequest/properties/currency

Confidence: HIGH

Evidence: Requirement Section 2.1 (req-amount-precision) mandates that amounts with more than 2 decimal places are truncated. The API spec has no mention of truncation behavior for the amount field; it is silent on how extra precision is handled.

Location: POST /api/payments - CreatePaymentRequest.amount

Requirement: Section 2.1 (req-amount-precision)

Spec: components/schemas/CreatePaymentRequest/properties/amount

Confidence: HIGH

Evidence: Requirement Section 2.1 (req-amount-range) mandates HTTP 400 with error code INVALID_AMOUNT for out-of-range amounts. API spec 400 response uses generic ErrorResponse with no enumeration of INVALID_AMOUNT as a possible code value.

Location: POST /api/payments

Requirement: Section 2.1 (req-amount-range)

Spec: paths//api/payments/post/responses/400

Confidence: HIGH

Evidence: Requirement Section 2.2 (req-currency-enum) mandates HTTP 400 with error code UNSUPPORTED_CURRENCY for unsupported currencies. API spec defines a generic 400 ErrorResponse with no enumeration of specific error codes for currency validation.

Location: POST /api/payments

Requirement: Section 2.2 (req-currency-enum)

Spec: paths//api/payments/post/responses/400

Confidence: HIGH

Evidence: Requirements Section 3.2 (req-state-transition-no-rollback-to-pending, req-state-refunded-terminal) forbid transitions to PENDING and any transition from REFUNDED. API spec does not document these forbidden transitions or the corresponding error responses.

Location: POST /api/payments/{id}/refund

Requirement: Section 3.2 (req-state-transition-no-rollback-to-pending, req-state-refunded-terminal)

Spec: paths//api/payments/{id}/refund/post

Confidence: HIGH

Evidence: Requirements Section 3.2 (req-state-transition-pending-to-refunded-forbidden) and Section 4.1 (req-refund-eligibility-completed-only) mandate HTTP 422 with error code INVALID_STATE. API 422 response uses generic ErrorResponse with no enumeration of INVALID_STATE.

Location: POST /api/payments/{id}/refund

Requirement: Section 3.2 (req-state-transition-pending-to-refunded-forbidden), Section 4.1 (req-refund-eligibility-completed-only)

Spec: paths//api/payments/{id}/refund/post/responses/422

Confidence: HIGH

Evidence: Requirement Section 6.5 (req-refund-not-found) mandates HTTP 404 with error code PAYMENT_NOT_FOUND when refunding a non-existent payment ID. API 404 response uses generic ErrorResponse with no enumeration of PAYMENT_NOT_FOUND.

Location: POST /api/payments/{id}/refund

Requirement: Section 6.5 (req-refund-not-found)

Spec: paths//api/payments/{id}/refund/post/responses/404

Confidence: HIGH

Evidence: PaymentStatus enum in API spec includes FAILED and PARTIALLY_REFUNDED. Requirements state machine (Sections 3.1, 3.2) only mentions PENDING, COMPLETED, and REFUNDED states with no reference to FAILED or PARTIALLY_REFUNDED.

Location: components/schemas/PaymentStatus

Requirement: Section 3.1, Section 3.2

Spec: components/schemas/PaymentStatus

Confidence: HIGH

Evidence: CreatePaymentRequest requires merchantId (required field). Requirements Sections 2.3 only list amount, currency, and payerId as required fields with no mention of merchantId.

Location: POST /api/payments - CreatePaymentRequest

Requirement: Section 2.3

Spec: components/schemas/CreatePaymentRequest/required

Confidence: HIGH

Evidence: Requirement Section 5.2 (req-authz-query-payment) allows both the original payer and admins to query a payment. API spec GET /api/payments/{id} has no role-based access control, admin role definition, or security scheme to enforce this.

Location: GET /api/payments/{id}

Requirement: Section 5.2 (req-authz-query-payment)

Spec: paths//api/payments/{id}/get

Confidence: MEDIUM

Evidence: Requirements Section 8 (req-perf-payment-creation, req-perf-status-query, req-perf-refund) define p95 latency SLAs of 200ms, 50ms, and 300ms respectively. OpenAPI spec has no SLA, latency, or performance-related annotations.

Location: All endpoints

Requirement: Section 8 (req-perf-payment-creation, req-perf-status-query, req-perf-refund)

Spec: N/A

Confidence: HIGH

Evidence: CreatePaymentRequest requires customerId. Requirements do not mention customerId; they reference payerId as the user identifier. This may be a naming discrepancy or an undocumented field.

Location: POST /api/payments - CreatePaymentRequest

Requirement: Section 2.3 (req-required-field-payerId)

Spec: components/schemas/CreatePaymentRequest/properties/customerId

Confidence: HIGH

Evidence: PaymentResponse schema includes updatedAt (date-time). Requirement Section 2.4 (req-payment-creation-response) lists required response fields as id, amount, currency, payerId, status, createdAt with no mention of updatedAt.

Location: components/schemas/PaymentResponse

Requirement: Section 2.4 (req-payment-creation-response)

Spec: components/schemas/PaymentResponse/properties/updatedAt

Confidence: HIGH

Root Cause: The API does not enforce ownership authorization on the refund endpoint, allowing User B to successfully refund a payment belonging to User A instead of returning 403 FORBIDDEN_OWNERSHIP.

Evidence: The request is made by 'refunder' (User B) on payment 'pay_960153861d4f' owned by 'customer-userA-001', yet the API returns 200 with status REFUNDED, proving no ownership check is performed.

Suggested Fix: Implement an ownership/authorization check in the refund handler that compares the authenticated user's identity against the payment's merchantId or customerId and returns 403 with code FORBIDDEN_OWNERSHIP when they do not match.

Root Cause: The API immediately transitions newly created payments to COMPLETED status instead of the expected PENDING status, violating the intended payment lifecycle.

Evidence: The POST /api/payments response for the newly created payment returns status 'COMPLETED' rather than 'PENDING', even though the test (and presumably the spec) expects new payments to start in a PENDING state.

Suggested Fix: Fix the payment creation logic to set the initial status to PENDING; status transitions to COMPLETED should occur only after explicit confirmation or processing steps defined in the payment workflow.

Root Cause: The API allows a refund to be applied to an already-REFUNDED payment instead of rejecting it with 422, indicating missing idempotency/state-guard logic in the refund endpoint.

Evidence: The payment 'pay_041437b689e7' already has status REFUNDED, yet POST /refund returns 200 with an updated refundReason and a new updatedAt timestamp, meaning the refund was processed again rather than rejected.

Suggested Fix: Add a pre-condition check in the refund handler that returns 422 (e.g., PAYMENT_NOT_REFUNDABLE or ALREADY_REFUNDED) when the payment status is already REFUNDED; also set expected_status to 422 in the test and assert the error code/message fields.

Root Cause: The expected_status is set to 0 (likely uninitialized/default) instead of the correct expected value of 400, and the test asserts a 'code' field that the API does not return for framework-level deserialization errors.

Evidence: actual_status is 400 which is the semantically correct response, but expected_status is 0; the response body is a Spring default error envelope without a 'code' field, which is consistent with pre-controller type-mismatch rejection.

Suggested Fix: Set expected_status to 400 and remove the assertion on 'code' since Spring's built-in HttpMessageNotReadableException response does not include a business-level error code; alternatively update the API's global exception handler to enrich this error with a 'code' field.

Root Cause: The description string sent is 256 characters (one over the 255-char max boundary), so the API correctly rejects it with 400, but the test expects a 201 success response with body fields like 'id' and 'createdAt'.

Evidence: The description value contains 256 'A' characters; the API responds with VALIDATION_ERROR 'size must be between 0 and 255', confirming the boundary was exceeded by one character; expected_status is 0 (unset) and success-path fields are asserted.

Suggested Fix: Trim the description to exactly 255 characters so the boundary test truly sits at the valid maximum, set expected_status to 201, and assert the success-response fields; or if testing the 256-char case, set expected_status to 400 and assert error fields instead.

Root Cause: The test expects the error code 'ALREADY_REFUNDED' but the API returns the functionally equivalent code 'PAYMENT_NOT_REFUNDABLE', indicating a mismatch between the expected error code and the API's actual contract.

Evidence: actual_status is correctly 422 and the response body contains a valid error message ('Payment pay_bfd6e342ae9a cannot be refunded in status: REFUNDED'), but the asserted code 'ALREADY_REFUNDED' differs from the actual code 'PAYMENT_NOT_REFUNDABLE'.

Suggested Fix: Update the test's expected error code from 'ALREADY_REFUNDED' to 'PAYMENT_NOT_REFUNDABLE' to match the API's documented or actual error codes; alternatively, if the spec mandates 'ALREADY_REFUNDED', update the API to return that specific code for the already-refunded state.

Root Cause: The reason string is 257 characters long (exceeding the 255-char maximum), so the API correctly rejects it, but the test expects a successful refund response.

Evidence: The reason value contains 257 'A' characters; the API returns VALIDATION_ERROR 'size must be between 0 and 255', confirming the value is one character over the limit; the test asserts success-path fields like 'id', 'refundReason', 'createdAt', and 'updatedAt'.

Suggested Fix: Trim the reason string to exactly 255 characters to correctly represent the maximum-length boundary, set expected_status to the appropriate success code, and assert success-response fields; verify the character count programmatically before running the test.

Root Cause: The test expects a business-level error envelope with 'code' and 'message' fields, but passing a non-numeric string for 'amount' triggers a Spring framework deserialization error that returns a minimal error response without those fields.

Evidence: The actual response is the Spring default error format {timestamp, status, error, path} without 'code' or 'message', identical to tc-012's pattern, indicating the rejection happens before the controller/business logic layer.

Suggested Fix: Either update the global exception handler to wrap HttpMessageNotReadableException with a structured error body including 'code' and 'message', or update the test assertions to match the actual Spring error response format and set expected_status to 400.

Root Cause: The test asserts that 'description' must be present in the response, but the stored payment was created without a description field and the API correctly omits absent optional fields.

Evidence: The actual response contains all other expected fields correctly (id, merchantId, customerId, amount, currency, status, createdAt, updatedAt) and returns 200, but 'description' is absent because the seed payment has no description value.

Suggested Fix: Either make the 'description' assertion conditional/optional in the test, or update the test setup data to include a description value when seeding 'pay_4f5ee92bf505'.