Simplify using loading and flash messages together

spec/javascripts/unit/darkswarm/services/credit_card_spec.js.coffee

@@ -1,5 +1,9 @@
 describe 'CreditCard service', ->
   CreditCard = null
+  CreditCards = null
+  $http = null
+  Loading = null
+  RailsFlashLoader = null
 
   beforeEach ->
     module 'Darkswarm'
@@ -8,19 +12,43 @@ describe 'CreditCard service', ->
       $provide.value "railsFlash", null
       null
 
-    inject (_CreditCard_)->
+    inject (_CreditCard_, _CreditCards_, _$httpBackend_, _Loading_, _RailsFlashLoader_)->
       CreditCard = _CreditCard_
+      CreditCards = _CreditCards_
+      $http = _$httpBackend_
+      Loading = _Loading_
+      RailsFlashLoader = _RailsFlashLoader_
+
+    CreditCard.secrets =
+      card:
+        exp_month: "12"
+        exp_year: "2030"
+        last4: "1234"
+      cc_type: 'mastercard'
+      token: "token123"
+
+  describe "submit", ->
+    it "adds a credit card", ->
+      $http.expectPUT("/credit_cards/new_from_token").respond(200, {})
+      spyOn(CreditCards, "add")
+
+      CreditCard.submit()
+      $http.flush()
+
+      expect(CreditCards.add).toHaveBeenCalled()
+
+    it "reports errors", ->
+      $http.expectPUT("/credit_cards/new_from_token").respond(500, {})
+      spyOn(Loading, "clear")
+      spyOn(RailsFlashLoader, "loadFlash")
+
+      CreditCard.submit()
+      $http.flush()
+
+      expect(Loading.clear).toHaveBeenCalled()
+      expect(RailsFlashLoader.loadFlash).toHaveBeenCalled()
 
   describe "process_params", ->
-    beforeEach ->
-      CreditCard.secrets =
-        card:
-          exp_month: "12"
-          exp_year: "2030"
-          last4: "1234"
-        cc_type: 'mastercard'
-        token: "token123"
-
     it "uses cc_type, rather than fetching the brand from the card", ->
       # This is important for processing the card with activemerchant
       process_params = CreditCard.process_params()

spec/javascripts/unit/darkswarm/services/messages_spec.js.coffee

@@ -0,0 +1,41 @@
+describe 'Messages service', ->
+  Messages = null
+  Loading = null
+  RailsFlashLoader = null
+
+  beforeEach ->
+    module 'Darkswarm'
+
+    module ($provide)->
+      $provide.value "railsFlash", null
+      null
+
+    inject (_Messages_, _Loading_, _RailsFlashLoader_)->
+      Messages = _Messages_
+      Loading = _Loading_
+      RailsFlashLoader = _RailsFlashLoader_
+
+  it "shows a loading message", ->
+    Messages.loading("Hang on...")
+    expect(Loading.message).toEqual "Hang on..."
+
+  it "shows a success message", ->
+    spyOn(RailsFlashLoader, "loadFlash")
+    Messages.success("Yay!")
+    expect(RailsFlashLoader.loadFlash).toHaveBeenCalledWith({success: "Yay!"})
+
+  it "shows a error message", ->
+    spyOn(RailsFlashLoader, "loadFlash")
+    Messages.error("Boo!")
+    expect(RailsFlashLoader.loadFlash).toHaveBeenCalledWith({error: "Boo!"})
+
+  it "shows a flash message", ->
+    data = {info: "thinking"}
+    spyOn(RailsFlashLoader, "loadFlash")
+    Messages.flash(data)
+    expect(RailsFlashLoader.loadFlash).toHaveBeenCalledWith(data)
+
+  it "clears a loading message", ->
+    Messages.loading("Hang on...")
+    Messages.success("Done.")
+    expect(Loading.message).toEqual null