Tests added to check status codes when handling milestone via API

A few more tests added to check status code when creating or updating milestones.

spec/requests/api/milestones_spec.rb

@@ -24,6 +24,11 @@ describe Gitlab::API do
       response.status.should == 200
       json_response['title'].should == milestone.title
     end
+
+    it "should return a 404 error if milestone id not found" do
+      get api("/projects/#{project.id}/milestones/1234", user)
+      response.status.should == 404
+    end
   end
   describe "POST /projects/:id/milestones" do
@@ -34,6 +39,19 @@ describe Gitlab::API do
       json_response['title'].should == 'new milestone'
       json_response['description'].should be_nil
     end
+
+    it "should create a new project milestone with description and due date" do
+      post api("/projects/#{project.id}/milestones", user),
+        title: 'new milestone', description: 'release', due_date: '2013-03-02'
+      response.status.should == 201
+      json_response['description'].should == 'release'
+      json_response['due_date'].should == '2013-03-02'
+    end
+
+    it "should return a 400 error if title is missing" do
+      post api("/projects/#{project.id}/milestones", user)
+      response.status.should == 400
+    end
   end
   describe "PUT /projects/:id/milestones/:milestone_id" do
@@ -43,5 +61,11 @@ describe Gitlab::API do
       response.status.should == 200
       json_response['title'].should == 'updated title'
     end
+
+    it "should return a 404 error if milestone is not found" do
+      put api("/projects/#{project.id}/milestones/1234", user),
+        title: 'updated title'
+      response.status.should == 404
+    end
   end
 end