Test case log state machine

app/models/case_log.rb

@@ -51,11 +51,11 @@ class CaseLog < ApplicationRecord
   end
 
   def not_started?
-    status == "not started"
+    status == "not_started"
   end
 
   def in_progress?
-    status == "in progress"
+    status == "in_progress"
   end
 
   private

spec/models/case_log_spec.rb

@@ -14,4 +14,21 @@ RSpec.describe Form, type: :model do
       expect { CaseLog.create!(tenant_age: 0) }.to raise_error(ActiveRecord::RecordInvalid)
     end
   end
+
+  describe "status" do
+    let!(:empty_case_log) { FactoryBot.create(:case_log) }
+    let!(:in_progress_case_log) { FactoryBot.create(:case_log, :in_progress) }
+
+    it "is set to not started for an empty case log" do
+      expect(empty_case_log.not_started?).to be(true)
+      expect(empty_case_log.in_progress?).to be(false)
+      expect(empty_case_log.completed?).to be(false)
+    end
+
+    it "is set to not started for an empty case log" do
+      expect(in_progress_case_log.in_progress?).to be(true)
+      expect(in_progress_case_log.not_started?).to be(false)
+      expect(in_progress_case_log.completed?).to be(false)
+    end
+  end
 end

spec/requests/case_log_controller_spec.rb

@@ -127,6 +127,19 @@ RSpec.describe CaseLogsController, type: :request do
       end
     end
 
+    context "invalid case log params" do
+      let(:params) { {tenant_age: 200} }
+
+      it "returns 422" do
+        expect(response).to have_http_status(:unprocessable_entity)
+      end
+
+      it "returns an error message" do
+        json_response = JSON.parse(response.body)
+        expect(json_response["errors"]).to eq(["Tenant age must be between 0 and 120"])
+      end
+    end
+
     context "request with invalid credentials" do
       let(:basic_credentials) do
         ActionController::HttpAuthentication::Basic.encode_credentials(api_username, "Oops")