spec: for anonymous messages

fixes VICE-2432
flag=discussion_anonymity

Test Plan:
1) Review Specs.
2) Ensure they are appropriate

Change-Id: If3bfaddf186f72ea6c363b855ae4e50833540b6a
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/283215
Reviewed-by: Caleb Guanzon <cguanzon@instructure.com>
QA-Review: Omar Soto-Fortuño <omar.soto@instructure.com>
QA-Review: Caleb Guanzon <cguanzon@instructure.com>
Product-Review: Caleb Guanzon <cguanzon@instructure.com>
Tested-by: Service Cloud Jenkins <svc.cloudjenkins@instructure.com>

spec/messages/new_discussion_entry.erb_spec.rb

@@ -51,5 +51,20 @@ describe "new_discussion_entry" do
       msg = generate_message(notification_name, path_type, asset)
       expect(msg.body.include?("replying to this message")).to eq false
     end
+
+    context "fully anonymous topic" do
+      let(:anonymous_topic) { discussion_topic_model(anonymous_state: "full_anonymity") }
+
+      before :once do
+        @user = user_model(name: "Chawn Neal")
+        @object = anonymous_topic.discussion_entries.create!(user: @user)
+      end
+
+      it "does not render user name" do
+        msg = generate_message(notification_name, path_type, @object)
+        expect(msg.body).to match(/Anonymous\s\w+\sreplied\sto/)
+        expect(msg.body).not_to include(@user.short_name)
+      end
+    end
   end
 end

spec/models/discussion_entry_spec.rb

@@ -21,6 +21,7 @@
 describe DiscussionEntry do
   let(:topic) { discussion_topic_model }
   let(:anonymous_topic) { discussion_topic_model(anonymous_state: "full_anonymity") }
+  let(:partially_anonymous_topic) { discussion_topic_model(anonymous_state: "partial_anonymity") }
 
   describe "callback lifecycle" do
     before(:once) do
@@ -863,7 +864,7 @@ describe DiscussionEntry do
     end
   end
 
-  describe "author_name" do
+  describe "#author_name" do
     let(:user) { user_model(name: "John Doe") }
     let(:entry) { topic.discussion_entries.create!(message: "Hello!", user: user) }
     let(:anon_entry) { anonymous_topic.discussion_entries.create!(message: "Hello!", user: user) }
@@ -879,5 +880,41 @@ describe DiscussionEntry do
     it "returns You as anonymous author name" do
       expect(anon_entry.author_name(user)).to eq "John Doe"
     end
+
+    context "discussion_topic.anonymous?" do
+      context "TeacherEnrollment" do
+        it "returns user.short_name" do
+          anonymous_topic.course.enroll_user(user, "TeacherEnrollment", enrollment_state: "active")
+          entry = anonymous_topic.discussion_entries.create!(message: "Hello!", user: user)
+
+          expect(entry.author_name).to eq(user.short_name)
+        end
+      end
+
+      context "TaEnrollment" do
+        it "returns user.short_name" do
+          anonymous_topic.course.enroll_user(user, "TaEnrollment", enrollment_state: "active")
+          entry = anonymous_topic.discussion_entries.create!(message: "Hello!", user: user)
+
+          expect(entry.author_name).to eq(user.short_name)
+        end
+      end
+
+      context "DesignerEnrollment" do
+        it "returns user.short_name" do
+          anonymous_topic.course.enroll_user(user, "DesignerEnrollment", enrollment_state: "active")
+          entry = anonymous_topic.discussion_entries.create!(message: "Hello!", user: user)
+
+          expect(entry.author_name).to eq(user.short_name)
+        end
+      end
+
+      context "discussion_topic partial_anonymity && !entry.is_anonymous_author" do
+        it "returns user.short_name" do
+          entry = partially_anonymous_topic.discussion_entries.create!(message: "Hello!", user: user, is_anonymous_author: false)
+          expect(entry.author_name).to eq(user.short_name)
+        end
+      end
+    end
   end
 end

spec/models/message_spec.rb

@@ -197,6 +197,62 @@ describe Message do
     end
   end
 
+  describe "#author_avatar_url" do
+    context "discussion entry and discussion_topic is anonymous" do
+      it "returns correct url" do
+        discussion_topic_model
+        @topic.update(anonymous_state: "full_anonymity")
+        @discussion_entry = @topic.discussion_entries.create!(user: user_model)
+        message_model(context: @discussion_entry)
+
+        expect(@topic).to be_anonymous
+        expect(@message.author_avatar_url).to eq("https://canvas.instructure.com/images/messages/avatar-50.png")
+      end
+    end
+  end
+
+  describe "#author_short_name" do
+    context "discussion entry and discussion_topic is anonymous" do
+      it "returns discussion entry author_name" do
+        discussion_topic_model
+        @topic.update(anonymous_state: "full_anonymity")
+        @discussion_entry = @topic.discussion_entries.create!(user: user_model)
+        message_model(context: @discussion_entry)
+
+        expect(@topic).to be_anonymous
+        expect(@message.author_short_name).to eq(@discussion_entry.author_name)
+      end
+    end
+  end
+
+  describe "#infer_from_name" do
+    context "discussion entry and discussion_topic is anonymous" do
+      it "returns discussion entry author_name" do
+        discussion_topic_model
+        @topic.update(anonymous_state: "full_anonymity")
+        @discussion_entry = @topic.discussion_entries.create!(user: user_model)
+        message_model(context: @discussion_entry)
+
+        expect(@topic).to be_anonymous
+        expect(@message.from_name).to eq(@discussion_entry.author_name)
+      end
+    end
+  end
+
+  describe "#author_email_address" do
+    context "discussion entry and discussion_topic is anonymous" do
+      it "returns nil" do
+        discussion_topic_model
+        @topic.update(anonymous_state: "full_anonymity")
+        @discussion_entry = @topic.discussion_entries.create!(user: user_model)
+        message_model(context: @discussion_entry)
+
+        expect(@topic).to be_anonymous
+        expect(@message.author_email_address).to be_nil
+      end
+    end
+  end
+
   it "raises an error when trying to re-save an existing message" do
     message_model
     @message.body = "something else"