Fix changeset mime boundaries

batch.js

@@ -129,8 +129,8 @@ Batch.prototype.body = function()
         }
         msg += `Content-Type: multipart/mixed; boundary=${op.changeset}\r\n`;
         msg += 'Content-Transfer-Encoding: binary\r\n\r\n';
-        msg += `--${op.changeset}\r\n`;
       }
+      msg += `--${op.changeset}\r\n`;
     } else {
       if(last_changeset) {
         msg += `--${last_changeset}--\r\n`;

spec/service-spec.js

@@ -0,0 +1,84 @@
+'use strict';
+
+const request = require('../request');
+const Odata = require('../index');
+
+describe('batch tests', function() {
+
+  var config;
+  var q;
+  beforeAll(function(done) {
+    request.getAsync('http://services.odata.org/V4/(S(readwrite))/OData/OData.svc/')
+      .then(function(response) {
+        var body = JSON.parse(response.body);
+        var r = /(.*)\$metadata/.exec(body['@odata.context']);
+        if(r) {
+          config = {
+            service: r[1],
+            format: 'json'
+          };
+        }
+      })
+      .finally(done);
+  });
+
+  beforeEach(function() {
+    q = Odata(config);
+  });
+
+  it('should retrieve price for item ID 6', function(done) {
+    q.resource('Products', 6).select('Price').get()
+      .then(function(response) {
+        var body = JSON.parse(response.body);
+        expect(body.Price).toEqual(18.8);
+      })
+      .catch(function(err) {
+        fail(err);
+      })
+      .finally(done);
+  });
+
+  it('should change price for item ID 6', function(done) {
+    q.resource('Products', 6).patch({'@odata.type': 'ODataDemo.Product', Price: 20.0}).
+      then(function(response) {
+        expect(response.statusCode).toEqual(204);
+        q = Odata(config);
+        return q.resource('Products', 6).get();
+      })
+      .then(function(response) {
+        var body = JSON.parse(response.body);
+        expect(body.Price).toEqual(20.0);
+      })
+      .catch(function(err) {
+        fail(err);
+      })
+      .finally(done);
+  });
+
+  it('should change price for items 4 and 5 using a batch', function(done) {
+    q.batch()
+      .resource('Products', 4).patch({'@odata.type': 'ODataDemo.Product', Price: 14.4}, {content_id: 1})
+      .resource('Products', 5).patch({'@odata.type': 'ODataDemo.Product', Price: 23.2}, {content_id: 2});
+    q.send()
+      .then(function(response) {
+        q = Odata(config);
+        return q.resource('Products', 4).select('Price').get()
+      })
+      .then(function(response) {
+        var body = JSON.parse(response.body);
+        expect(body.Price).toEqual(14.4);
+        q = Odata(config);
+        return q.resource('Products', 5).select('Price').get()
+      })
+      .then(function(response) {
+        var body = JSON.parse(response.body);
+        expect(body.Price).toEqual(23.2);
+      })
+      .catch(function(err) {
+        fail(err);
+      })
+        .finally(done);
+  });
+
+});
+