FormData multi-part handling

.travis.yml

@@ -2,4 +2,3 @@ language: node_js
 node_js:
   - "10"
   - "8"
-  - "6"

mocha.opts

@@ -0,0 +1 @@
+--file setupTests.js

package.json

@@ -1,6 +1,7 @@
 {
   "name": "axios-mock-adapter",
   "version": "1.16.0",
+  "engines" : { "node" : ">=8" },
   "description": "Axios adapter that allows to easily mock requests",
   "main": "src/index.js",
   "scripts": {
@@ -43,6 +44,7 @@
     "axios": "^0.18.0",
     "chai": "^4.1.0",
     "eslint": "^5.2.0",
+    "formdata-node": "^1.5.2",
     "istanbul": "^0.4.5",
     "mocha": "^5.2.0",
     "rimraf": "^2.6.1",

src/utils.js

@@ -64,6 +64,26 @@ function isParametersMatching(parameters, required) {
 }
 
 function isBodyMatching(body, requiredBody) {
+  if (requiredBody instanceof FormData) {
+    if (!(body instanceof FormData)) {
+      return false;
+    }
+    var requiredBodyFormData = {};
+    // eslint-disable-next-line
+    for (var pair of requiredBody.entries()) {
+      requiredBodyFormData[pair[0]] = pair[1];
+    }
+    var bodyFormData = {};
+    for (pair of body.entries()) {
+      bodyFormData[pair[0]] = pair[1];
+    }
+    for(var key in requiredBodyFormData) {
+      if(!(key in bodyFormData) || requiredBodyFormData[key]!==bodyFormData[key]) {
+        return false;
+      }
+    }
+    return true;
+  }
   if (requiredBody === undefined) {
     return true;
   }

test/basics.spec.js

@@ -1,6 +1,6 @@
 var axios = require('axios');
 var expect = require('chai').expect;
-
+var FormData = require('formdata-node').default;
 var MockAdapter = require('../src');
 
 describe('MockAdapter basics', function() {
@@ -311,6 +311,50 @@ describe('MockAdapter basics', function() {
     });
   });
 
+  describe('with FormData', function() {
+    it('works when multipart FormData body matches', function() {
+      var body = new FormData();
+      body.append('key', 'value');
+      var matchBody = new FormData;
+      matchBody.append('key', 'value');
+      mock.onPost('/formDataMatch', body).replyOnce(200);
+
+      return instance
+        .post('/formDataMatch', matchBody)
+        .then(function(response) {
+          expect(response.status).to.equal(200);
+        });
+    });
+
+    it('does not reply on FormData keys mismatch', function() {
+      var body = new FormData();
+      body.append('key', 'value');
+      var matchBody = new FormData;
+      matchBody.append('some-other-key', 'value');
+      mock.onPost('/formDataMatch', body).replyOnce(200);
+
+      return instance
+        .post('/formDataNoMatch', matchBody)
+        .catch(function(error) {
+          expect(error.response.status).to.equal(404);
+        });
+    });
+
+    it('does not reply on FormData data mismatch', function() {
+      var body = new FormData();
+      body.append('key', 'value');
+      var matchBody = new FormData;
+      matchBody.append('key', 'another value');
+      mock.onPost('/formDataMatch', body).replyOnce(200);
+
+      return instance
+        .post('/formDataNoMatch', matchBody)
+        .catch(function(error) {
+          expect(error.response.status).to.equal(404);
+        });
+    });
+  });
+
   it('works when using baseURL', function() {
     instance.defaults.baseURL = 'http://www.example.org';
 

test/setupTests.js

@@ -0,0 +1,9 @@
+var FormData = require('formdata-node').default;
+
+beforeEach(function() {
+  global.FormData = FormData;
+});
+
+afterEach(function() {
+  delete global.FormData;
+});