adds validation for name to assignment quick add

fixes CNVS-9495

test plan:
- with draft state enabled
- from assignment index page as a teacher
- click quick add button for assignment
- save without title
- verify that the error message renders
- also verify that you can save assignment with a title from quick add window

Change-Id: If7359af56656b9e3dd6a33b9db9d6638c8b3f175
Reviewed-on: https://gerrit.instructure.com/26281
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Cameron Matheson <cameron@instructure.com>
QA-Review: Caleb Guanzon <cguanzon@instructure.com>
Product-Review: Simon Williams <simon@instructure.com>

app/coffeescripts/views/assignments/CreateAssignmentView.coffee

@@ -4,9 +4,10 @@ define [
   'compiled/views/DialogFormView'
   'jst/assignments/CreateAssignment'
   'jst/EmptyDialogFormWrapper'
+  'i18n!assignments'
   'jquery'
   'jquery.instructure_date_and_time'
-], (_, Assignment, DialogFormView, template, wrapper, $) ->
+], (_, Assignment, DialogFormView, template, wrapper, I18n, $) ->
 
   class CreateAssignmentView extends DialogFormView
     defaults:
@@ -88,3 +89,16 @@ define [
 
     newAssignmentUrl: ->
       ENV.URLS.new_assignment_url
+
+    validateBeforeSave: (data, errors) ->
+      errors = @_validateTitle data, errors
+      errors
+
+    _validateTitle: (data, errors) ->
+      frozenTitle = _.contains(@model.frozenAttributes(), "title")
+
+      if !frozenTitle and (!data.name or $.trim(data.name.toString()).length == 0)
+        errors["name"] = [
+          message: I18n.t 'name_is_required', 'Name is required!'
+        ]
+      errors

spec/coffeescripts/views/assignments/CreateAssignmentViewSpec.coffee

@@ -17,6 +17,9 @@ define [
   assignment2 = ->
     new Assignment(buildAssignment2())
 
+  assignment3 = ->
+    new Assignment(buildAssignment3())
+
   buildAssignment1 = ->
     date1 =
       "due_at":"2013-08-28T23:59:00-06:00"
@@ -44,6 +47,15 @@ define [
       "position":2
     )
 
+  buildAssignment3 = ->
+    buildAssignment(
+      "id":4
+      "name":""
+      "due_at":"2013-08-23T23:59:00-06:00"
+      "points_possible":10
+      "position":3
+    )
+
   buildAssignment = (options) ->
     options ?= {}
 
@@ -82,6 +94,7 @@ define [
     setup: ->
       @assignment1 = assignment1()
       @assignment2 = assignment2()
+      @assignment3 = assignment3()
       @group       = assignmentGroup()
 
   test "initialize generates a new assignment for creation", ->
@@ -191,3 +204,12 @@ define [
     $.fn.datetime_field.restore()
     DialogFormView.prototype.openAgain.restore()
 
+  test "requires name to save assignment", ->
+    view = createView(@assignment3)
+    data =
+      name: ""
+    errors = view.validateBeforeSave(data, [])
+
+    ok errors["name"]
+    equal errors["name"].length, 1
+    equal errors["name"][0]["message"], "Name is required!"