Add test for creating anonymous blocks

spec/controllers/ajax/anonymous_block_controller_spec.rb

@@ -0,0 +1,59 @@
+# frozen_string_literal: true
+require "rails_helper"
+
+describe Ajax::AnonymousBlockController, :ajax_controller, type: :controller do
+  describe "#create" do
+    subject { post(:create, params: params) }
+
+    context "user signed in" do
+      let(:user) { FactoryBot.create(:user) }
+
+      before do
+        sign_in(user)
+      end
+
+      context "when all parameters are given" do
+        let(:question) { FactoryBot.create(:question, author_identifier: "someidentifier") }
+        let!(:inbox) { FactoryBot.create(:inbox, user: user, question: question) }
+        let(:params) do
+          { question: question.id }
+        end
+
+        let(:expected_response) do
+          {
+            "success" => true,
+            "status"  => "okay",
+            "message" => anything
+          }
+        end
+
+        it "creates an anonymous block" do
+          expect { subject }.to(change { AnonymousBlock.count }.by(1))
+        end
+
+        include_examples "returns the expected response"
+      end
+
+      context "when parameters are missing" do
+        let(:params) { {} }
+        let(:expected_response) do
+          {
+            "success" => false,
+            "status"  => "parameter_error",
+            "message" => anything
+          }
+        end
+
+        it "does not create an anonymous block" do
+          expect { subject }.not_to(change { AnonymousBlock.count })
+        end
+
+        include_examples "returns the expected response"
+      end
+    end
+  end
+
+  describe "#destroy" do
+    pending
+  end
+end