Fix bug: z.stashFile doesn't pick up filename in Content-Disposition

package.json

@@ -18,7 +18,7 @@
     "preversion": "git pull && npm test",
     "version": "node bin/bump-dependencies.js && git add package.json",
     "postversion": "git push && git push --tags",
-    "test": "mocha -t 5000 --recursive test",
+    "test": "mocha -t 10000 --recursive test",
     "posttest": "npm run lint",
     "plain-test": "mocha -t 5000 --recursive test",
     "integration-test": "mocha -t 10000 integration-test",

src/tools/create-file-stasher.js

@@ -111,27 +111,36 @@ const createFileStasher = input => {
               let newBufferStringStream = response;
               if (_.isString(response)) {
                 newBufferStringStream = response;
-              } else if (response && response.headers) {
-                if (response.body && typeof response.body.pipe === 'function') {
+              } else if (response) {
+                if (Buffer.isBuffer(response)) {
+                  newBufferStringStream = response;
+                } else if (Buffer.isBuffer(response.dataBuffer)) {
+                  newBufferStringStream = response.dataBuffer;
+                } else if (
+                  response.body &&
+                  typeof response.body.pipe === 'function'
+                ) {
                   newBufferStringStream = response.body;
                 } else {
                   newBufferStringStream = response.content;
                 }
-                knownLength =
-                  knownLength || response.getHeader('content-length');
-                const cd = response.getHeader('content-disposition');
-                if (cd) {
-                  filename =
-                    filename ||
-                    contentDisposition.parse(cd).parameters.filename;
+
+                if (response.headers) {
+                  knownLength =
+                    knownLength || response.getHeader('content-length');
+                  const cd = response.getHeader('content-disposition');
+                  if (cd) {
+                    filename =
+                      filename ||
+                      contentDisposition.parse(cd).parameters.filename;
+                  }
                 }
-              } else if (Buffer.isBuffer(response)) {
-                newBufferStringStream = response;
               } else {
                 throw new Error(
                   'Cannot stash a Promise wrapped file of unknown type.'
                 );
               }
+
               return uploader(
                 result,
                 newBufferStringStream,
@@ -140,9 +149,13 @@ const createFileStasher = input => {
                 fileContentType
               );
             };
+
             if (isStreamed) {
               maybeResponse.throwForStatus();
-              return maybeResponse.buffer().then(parseFinalResponse);
+              return maybeResponse.buffer().then(buffer => {
+                maybeResponse.dataBuffer = buffer;
+                return parseFinalResponse(maybeResponse);
+              });
             } else {
               return parseFinalResponse(maybeResponse);
             }

test/tools/file-stasher.js

@@ -226,4 +226,32 @@ describe('file upload', () => {
       })
       .catch(done);
   });
+
+  it('should get filename from content-disposition', done => {
+    mocky.mockRpcCall(mocky.fakeSignedPostData);
+
+    // Expect to have this part in the request body sent to S3
+    mocky.mockUpload(
+      /name="Content-Disposition"\r\n\r\nattachment; filename="an example\.json"/
+    );
+
+    const request = createAppRequestClient(input);
+    const file = request({
+      url: 'https://zapier-httpbin.herokuapp.com/response-headers',
+      params: {
+        'Content-Disposition': 'inline; filename="an example.json"'
+      },
+      raw: true
+    });
+    stashFile(file)
+      .then(url => {
+        should(url).eql(
+          `${mocky.fakeSignedPostData.url}${
+            mocky.fakeSignedPostData.fields.key
+          }`
+        );
+        done();
+      })
+      .catch(done);
+  });
 });

test/tools/mocky.js

@@ -39,9 +39,9 @@ const fakeSignedPostData = {
   }
 };
 
-const mockUpload = () => {
+const mockUpload = bodyMatcher => {
   nock('http://s3-fake.zapier.com')
-    .post('/')
+    .post('/', bodyMatcher)
     .reply(204, '');
 };