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fix: surface server error body & cap scenarios #324

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31edfb5
fix: surface server error body on non-2xx responses
SavioBS629 Jun 19, 2026
5f37f10
fix: batch requests to <=10, harden polling, cap scenarios
SavioBS629 Jun 19, 2026
ea3718a
Merge branch 'main' of github.com:SavioBS629/mcp-server into fix/PMAA…
SavioBS629 Jun 19, 2026
039dbd0
fix: removal of deadcode
SavioBS629 Jun 19, 2026
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14 changes: 12 additions & 2 deletions src/lib/apiClient.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -150,8 +150,18 @@ class ApiClient {
const res = await fn(this.axiosAgent);
return new ApiResponse<T>(res);
} catch (error: any) {
if (error.response && !raise_error) {
return new ApiResponse<T>(error.response);
if (error.response) {
if (!raise_error) {
return new ApiResponse<T>(error.response);
}
const body = error.response.data;
const serverMessage =
typeof body === "string"
? body
: (body?.message ?? body?.error ?? JSON.stringify(body));
if (serverMessage) {
error.message = `Request failed with status code ${error.response.status}: ${serverMessage}`;
}
}
throw error;
}
Expand Down
224 changes: 157 additions & 67 deletions src/tools/testmanagement-utils/TCG-utils/api.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,16 +5,27 @@ import {
FETCH_DETAILS_URL,
FORM_FIELDS_URL,
BULK_CREATE_URL,
TC_DETAILS_MAX_BATCH,
BULK_CREATE_MAX_BATCH,
MAX_SCENARIOS_PER_DOCUMENT,
} from "./config.js";
import {
DefaultFieldMaps,
Scenario,
CreateTestCasesFromFileArgs,
} from "./types.js";
import { createTestCasePayload } from "./helpers.js";
import {
createTestCasePayload,
chunkArray,
canAcceptScenario,
} from "./helpers.js";
import { getBrowserStackAuth } from "../../../lib/get-auth.js";
import { BrowserStackConfig } from "../../../lib/types.js";
import { getTMBaseURL } from "../../../lib/tm-base-url.js";
import logger from "../../../logger.js";

const POLL_INTERVAL_MS = 10000;
const MAX_POLL_DURATION_MS = 8 * 60 * 1000;

/**
* Fetch default and custom form fields for a project.
Expand Down Expand Up @@ -132,6 +143,7 @@ export async function fetchTestCaseDetails(
export async function pollTestCaseDetails(
traceRequestId: string,
config: BrowserStackConfig,
deadline: number = Date.now() + MAX_POLL_DURATION_MS,
): Promise<Record<string, any>> {
const detailMap: Record<string, any> = {};
let done = false;
Expand All @@ -140,18 +152,27 @@ export async function pollTestCaseDetails(

while (!done) {
// add a bit of jitter to avoid synchronized polling storms
await new Promise((r) => setTimeout(r, 10000 + Math.random() * 5000));
await new Promise((r) =>
setTimeout(r, POLL_INTERVAL_MS + Math.random() * 5000),
);

// Give up before the backend key TTL expires; return whatever we collected.
if (Date.now() > deadline) break;

const poll = await apiClient.post({
url: `${TCG_POLL_URL_VALUE}?x-bstack-traceRequestId=${encodeURIComponent(traceRequestId)}`,
headers: {
"API-TOKEN": getBrowserStackAuth(config),
},
body: {},
// Don't throw on a non-2xx: an expired request key returns 400
// ("Request ids does not exists") and simply means there is nothing more
// to fetch — stop gracefully instead of failing the whole run.
raise_error: false,
});

if (!poll.data.data.success) {
throw new Error(`Polling failed: ${poll.data.data.message}`);
if (poll.status !== 200 || !poll.data?.data?.success) {
break;
}

for (const msg of poll.data.data.message) {
Expand Down Expand Up @@ -189,29 +210,55 @@ export async function pollScenariosTestDetails(
let iteratorCount = 0;
const tmBaseUrl = await getTMBaseURL(config);
const TCG_POLL_URL_VALUE = TCG_POLL_URL(tmBaseUrl);
const deadline = Date.now() + MAX_POLL_DURATION_MS;

// Promisify interval-style polling using a wrapper
await new Promise<void>((resolve, reject) => {
const intervalId = setInterval(async () => {
let stopped = false;

const pollOnce = async () => {
if (stopped) return;
try {
const poll = await apiClient.post({
url: `${TCG_POLL_URL_VALUE}?x-bstack-traceRequestId=${encodeURIComponent(traceId)}`,
headers: {
"API-TOKEN": getBrowserStackAuth(config),
},
body: {},
raise_error: false,
});

if (poll.status !== 200) {
clearInterval(intervalId);
reject(new Error(`Polling error: ${poll.statusText || poll.status}`));
stopped = true;
if (Object.keys(scenariosMap).length > 0) {
resolve();
} else {
reject(
new Error(
`Polling error: ${poll.status} ${typeof poll.data === "string" ? poll.data : JSON.stringify(poll.data)}`,
),
);
}
return;
}

let terminated = false;
for (const msg of poll.data.data.message) {
if (msg.type === "scenario") {
msg.data.scenarios.forEach((sc: any) => {
scenariosMap[sc.id] = { id: sc.id, name: sc.name, testcases: [] };
if (
canAcceptScenario(
scenariosMap,
sc.id,
MAX_SCENARIOS_PER_DOCUMENT,
)
) {
scenariosMap[sc.id] ||= {
id: sc.id,
name: sc.name,
testcases: [],
};
}
});
const count = Object.keys(scenariosMap).length;
await context.sendNotification({
Expand All @@ -227,23 +274,32 @@ export async function pollScenariosTestDetails(

if (msg.type === "testcase") {
const sc = msg.data.scenario;
if (sc) {
if (
sc &&
canAcceptScenario(scenariosMap, sc.id, MAX_SCENARIOS_PER_DOCUMENT)
) {
const array = Array.isArray(msg.data.testcases)
? msg.data.testcases
: msg.data.testcases
? [msg.data.testcases]
: [];
const ids = array.map((tc: any) => tc.id || tc.test_case_id);

const reqId = await fetchTestCaseDetails(
documentId,
folderId,
projectReferenceId,
ids,
source,
config,
const ids: string[] = array.map(
(tc: any) => tc.id || tc.test_case_id,
);
detailPromises.push(pollTestCaseDetails(reqId, config));

for (const idChunk of chunkArray(ids, TC_DETAILS_MAX_BATCH)) {
const reqId = await fetchTestCaseDetails(
documentId,
folderId,
projectReferenceId,
idChunk,
source,
config,
);
detailPromises.push(
pollTestCaseDetails(reqId, config, deadline),
);
}

scenariosMap[sc.id] ||= {
id: sc.id,
Expand All @@ -267,20 +323,41 @@ export async function pollScenariosTestDetails(
}

if (msg.type === "termination") {
clearInterval(intervalId);
resolve();
terminated = true;
}
}

if (terminated || Date.now() > deadline) {
stopped = true;
logger.info(
`TCG scenario poll stopped (${terminated ? "termination received" : "max duration reached"}); ${Object.keys(scenariosMap).length} scenarios, ${detailPromises.length} detail fetches`,
);
resolve();
return;
}
setTimeout(pollOnce, POLL_INTERVAL_MS);
} catch (err) {
clearInterval(intervalId);
stopped = true;
reject(err);
}
}, 10000); // 10 second interval
};
setTimeout(pollOnce, POLL_INTERVAL_MS);
});

// once all detail fetches are triggered, wait for them to complete
const detailsList = await Promise.all(detailPromises);
const allDetails = detailsList.reduce((acc, cur) => ({ ...acc, ...cur }), {});
const detailsList = await Promise.allSettled(detailPromises);
const rejectedDetails = detailsList.filter(
(r) => r.status === "rejected",
).length;
if (rejectedDetails > 0) {
logger.info(
`TCG detail fetches: ${detailsList.length - rejectedDetails}/${detailsList.length} succeeded, ${rejectedDetails} failed (degrading gracefully)`,
);
}
const allDetails = detailsList.reduce<Record<string, any>>(
(acc, result) =>
result.status === "fulfilled" ? { ...acc, ...result.value } : acc,
{},
);

// attach the fetched detail objects back to each testcase
for (const scenario of Object.values(scenariosMap)) {
Expand All @@ -307,41 +384,65 @@ export async function bulkCreateTestCases(
documentId: number,
config: BrowserStackConfig,
): Promise<string> {
const results: Record<string, any> = {};
const total = Object.keys(scenariosMap).length;
let doneCount = 0;
let testCaseCount = 0;
const failedScenarios: string[] = [];
const tmBaseUrl = await getTMBaseURL(config);
const BULK_CREATE_URL_VALUE = BULK_CREATE_URL(tmBaseUrl, projectId, folderId);

for (const { id, testcases } of Object.values(scenariosMap)) {
const testCaseLength = testcases.length;
testCaseCount += testCaseLength;
if (testCaseLength === 0) continue;
const payload = {
test_cases: testcases.map((tc) =>
createTestCasePayload(
tc,
id,
folderId,
fieldMaps,
documentId,
booleanFieldId,
traceId,
if (testcases.length === 0) continue;

const batches = chunkArray(testcases, BULK_CREATE_MAX_BATCH);
let createdInScenario = 0;
let scenarioFailed = false;

for (const batch of batches) {
const payload = {
test_cases: batch.map((tc) =>
createTestCasePayload(
tc,
id,
folderId,
fieldMaps,
documentId,
booleanFieldId,
traceId,
),
),
),
};
};

try {
const resp = await apiClient.post({
url: BULK_CREATE_URL_VALUE,
headers: {
"API-TOKEN": getBrowserStackAuth(config),
"Content-Type": "application/json",
},
body: payload,
});
results[id] = resp.data;
try {
await apiClient.post({
url: BULK_CREATE_URL_VALUE,
headers: {
"API-TOKEN": getBrowserStackAuth(config),
"Content-Type": "application/json",
},
body: payload,
});
createdInScenario += batch.length;
} catch (error) {
scenarioFailed = true;
await context.sendNotification({
method: "notifications/progress",
params: {
progressToken: context._meta?.progressToken ?? traceId,
message: `Creation failed for scenario ${id}: ${error instanceof Error ? error.message : "Unknown error"}`,
total,
progress: doneCount,
},
});
}
}

testCaseCount += createdInScenario;
if (scenarioFailed) {
failedScenarios.push(id);
}
if (createdInScenario > 0) {
doneCount++;
await context.sendNotification({
method: "notifications/progress",
params: {
Expand All @@ -351,23 +452,12 @@ export async function bulkCreateTestCases(
progress: doneCount,
},
});
} catch (error) {
//send notification
await context.sendNotification({
method: "notifications/progress",
params: {
progressToken: context._meta?.progressToken ?? traceId,
message: `Creation failed for scenario ${id}: ${error instanceof Error ? error.message : "Unknown error"}`,
total,
progress: doneCount,
},
});
//continue to next scenario
continue;
}
doneCount++;
}
const resultString = `Total of ${testCaseCount} test cases created in ${total} scenarios.`;
let resultString = `Total of ${testCaseCount} test cases created in ${doneCount} of ${total} scenarios.`;
if (failedScenarios.length > 0) {
resultString += ` Failed to create test cases for ${failedScenarios.length} scenario(s): ${failedScenarios.join(", ")}.`;
}
return resultString;
}

Expand Down
7 changes: 7 additions & 0 deletions src/tools/testmanagement-utils/TCG-utils/config.ts
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Original file line number Diff line number Diff line change
@@ -1,3 +1,10 @@
export const TC_DETAILS_MAX_BATCH = 10;

export const BULK_CREATE_MAX_BATCH = 10;

// Cap scenarios per document (mirrors TCG's former maxScenariosPerDocument=10).
export const MAX_SCENARIOS_PER_DOCUMENT = 10;

@SavioBS629 SavioBS629 Jun 19, 2026

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[High] Scenarios beyond this cap are silently discarded

When the backend returns more than 10 distinct scenarios, canAcceptScenario rejects every new scenario id once the map holds 10 — those scenarios and all their test cases are dropped (scenario branch never creates the entry; testcase branch skips fetchTestCaseDetails). bulkCreateTestCases then reports "…in N of <total>" where <total> is the capped count, so a 14-scenario document reports "10 of 10" — the user never learns 4 were dropped.

The real backend constraint is 10 IDs per fetch-details request, already handled correctly by chunkArray(ids, TC_DETAILS_MAX_BATCH). This separate per-document scenario cap looks reverse-engineered from a constant that doesn't exist on the backend.

Suggestion: Drop MAX_SCENARIOS_PER_DOCUMENT capping entirely. If a safety valve is genuinely wanted, track dropped scenario ids and surface them in the result string, and justify the value against the backend.

Reviewer: stack:code-review


export const TCG_TRIGGER_URL = (baseUrl: string) =>
`${baseUrl}/api/v1/integration/tcg/test-generation/suggest-test-cases`;

Expand Down
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