Merge pull request #7939 from usebruno/fix/7642-stream-files-internal

fix: preserve stream-backed file bodies during request interpolation …

packages/bruno-cli/src/runner/interpolate-vars.js

@@ -2,6 +2,8 @@ const { interpolate } = require('@usebruno/common');
 const { each, forOwn, cloneDeep, find } = require('lodash');
 const { isFormData } = require('@usebruno/common').utils;
 
+const isBinaryRequestBody = (data) => Buffer.isBuffer(data) || typeof data?.pipe === 'function';
+
 const getContentType = (headers = {}) => {
   let contentType = '';
   forOwn(headers, (value, key) => {
@@ -80,7 +82,7 @@ const interpolateVars = (request, envVariables = {}, runtimeVariables = {}, proc
 
   // Skip body interpolation for GraphQL requests.
   if (!isGraphqlRequest) {
-    if (contentType.includes('json') && !Buffer.isBuffer(request.data)) {
+    if (contentType.includes('json') && !isBinaryRequestBody(request.data)) {
       if (typeof request.data === 'string') {
         if (request?.data?.length) {
           request.data = _interpolate(request.data, { escapeJSONStrings: true });

packages/bruno-cli/tests/runner/interpolate-vars.spec.js

@@ -1,6 +1,25 @@
 const { describe, it, expect } = require('@jest/globals');
 const interpolateVars = require('../../src/runner/interpolate-vars');
 
+describe('interpolate-vars: interpolateVars', () => {
+  it('keeps stream-backed JSON request bodies intact', () => {
+    const streamPayload = {
+      pipe: jest.fn(),
+      path: '/tmp/allocations.json'
+    };
+    const request = {
+      method: 'POST',
+      mode: 'file',
+      url: 'http://api.example/upload',
+      headers: { 'content-type': 'application/json' },
+      data: streamPayload
+    };
+
+    const result = interpolateVars(request, { shouldNotApply: 'value' }, null, null);
+    expect(result.data).toBe(streamPayload);
+  });
+});
+
 describe('interpolate-vars: api key header name sidecar', () => {
   it('interpolates apiKeyHeaderName in lockstep with interpolated header keys', () => {
     const request = {