some frontend unit tests

app/api.js

@@ -145,9 +145,6 @@ function download(id, keychain) {
         if (authHeader) {
           keychain.nonce = parseNonce(authHeader);
         }
-        if (xhr.status === 404) {
-          return reject(new Error('notfound'));
-        }
         if (xhr.status !== 200) {
           return reject(new Error(xhr.status));
         }

app/fileManager.js

@@ -188,7 +188,7 @@ export default function(state, emitter) {
       }
       console.error(err);
       state.transfer = null;
-      const location = err.message === 'notfound' ? '/404' : '/error';
+      const location = err.message === '404' ? '/404' : '/error';
       if (location === '/error') {
         state.raven.captureException(err);
         metrics.stoppedDownload({ size, err });

app/fileReceiver.js

@@ -59,7 +59,7 @@ export default class FileReceiver extends Nanobus {
     return;
   }
 
-  async download() {
+  async download(noSave = false) {
     this.state = 'downloading';
     this.emit('progress', this.progress);
     try {
@@ -78,11 +78,13 @@ export default class FileReceiver extends Nanobus {
       if (this.cancelled) {
         throw new Error(0);
       }
-      await saveFile({
-        plaintext,
-        name: decodeURIComponent(this.fileInfo.name),
-        type: this.fileInfo.type
-      });
+      if (!noSave) {
+        await saveFile({
+          plaintext,
+          name: decodeURIComponent(this.fileInfo.name),
+          type: this.fileInfo.type
+        });
+      }
       this.msg = 'downloadFinish';
       this.state = 'complete';
       return;

app/ownedFile.js

@@ -16,7 +16,7 @@ export default class OwnedFile {
     this.ownerToken = obj.ownerToken;
     this.dlimit = obj.dlimit || 1;
     this.dtotal = obj.dtotal || 0;
-    this.keychain = new Keychain(obj.secretKey);
+    this.keychain = new Keychain(obj.secretKey, obj.nonce);
     this._hasPassword = !!obj.hasPassword;
   }
 
@@ -59,6 +59,7 @@ export default class OwnedFile {
       if (e.message === '404') {
         this.dtotal = this.dlimit;
       }
+      // ignore other errors
     }
   }