Add preferences to user model

spec/models/user_spec.rb

@@ -149,4 +149,50 @@ RSpec.describe User, type: :model do
       end
     end
   end
+
+  describe "#pref_enabled?" do
+    describe "preference not set" do
+      # TODO return default value
+      it "returns false" do
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(false)
+      end
+    end
+
+    describe "preference is set" do
+      it "returns true for boolean true" do
+        user.preferences.merge!({"lightning" => {"notify_sats_received" => true}})
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(true)
+      end
+
+      it "returns true for string 'true'" do
+        user.preferences.merge!({"lightning" => {"notify_sats_received" => "true"}})
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(true)
+      end
+
+      it "returns true for string 'enabled'" do
+        user.preferences.merge!({"lightning" => {"notify_sats_received" => "enabled"}})
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(true)
+      end
+
+      it "returns true for integer 1" do
+        user.preferences.merge!({"lightning" => {"notify_sats_received" => 1}})
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(true)
+      end
+
+      it "returns false for boolean false" do
+        user.preferences.merge!({"lightning" => {"notify_sats_received" => false}})
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(false)
+      end
+
+      it "returns false for string 'false'" do
+        user.preferences.merge!({"lightning" => {"notify_sats_received" => "false"}})
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(false)
+      end
+
+      it "returns false for integer 0" do
+        user.preferences.merge!({"lightning" => {"notify_sats_received" => 0}})
+        expect(user.pref_enabled?("lightning:notify_sats_received")).to be(false)
+      end
+    end
+  end
 end