✨ Add repository guidelines and enhance documentation for project structure, build commands, coding standards, and testing practices. Introduce AGENTS.md for contributor guidance, update README.md to reference new guidelines, and improve configuration documentation for NATS modes. Update Makefile and Taskfile with clearer run commands and requirements for development and production modes. Add production deployment guide and improve logging configuration for better observability.

internal/infra/monitoring/server_test.go

@@ -0,0 +1,95 @@
+package monitoring
+
+import (
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"caatsm/internal/infra/buildinfo"
+	"caatsm/internal/infra/config"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"go.uber.org/zap"
+)
+
+func TestMonitoring(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Monitoring Suite")
+}
+
+var _ = Describe("Server", func() {
+	Context("when monitoring is disabled", func() {
+		It("returns nil from ProvideServer", func() {
+			cfg := &config.Config{
+				Monitoring: config.MonitoringConfig{
+					Disabled: true,
+					Addr:     ":0",
+				},
+			}
+
+			server, err := ProvideServer(cfg, zap.NewNop(), nil, nil)
+			Expect(err).NotTo(HaveOccurred())
+			Expect(server).To(BeNil())
+		})
+	})
+
+	Context("health and metrics handlers", func() {
+		BeforeEach(func() {
+			buildinfo.Version = "v-test"
+			buildinfo.Commit = "abc"
+			buildinfo.BuiltAt = "now"
+		})
+
+		It("returns build info on /livez", func() {
+			server := &Server{
+				cfg:    config.MonitoringConfig{},
+				logger: zap.NewNop(),
+			}
+
+			req := httptest.NewRequest(http.MethodGet, "/livez", nil)
+			resp := httptest.NewRecorder()
+
+			server.handleLive(resp, req)
+
+			Expect(resp.Code).To(Equal(http.StatusOK))
+
+			payload := map[string]interface{}{}
+			Expect(json.NewDecoder(resp.Body).Decode(&payload)).To(Succeed())
+			Expect(payload["status"]).To(Equal("ok"))
+		})
+
+		It("reports unconfigured dependencies as unhealthy", func() {
+			server := &Server{
+				cfg: config.MonitoringConfig{
+					EnableHealth:  true,
+					HealthTimeout: time.Second,
+				},
+				logger: zap.NewNop(),
+			}
+
+			req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
+			resp := httptest.NewRecorder()
+
+			server.handleHealth(resp, req)
+
+			Expect(resp.Code).To(Equal(http.StatusServiceUnavailable))
+
+			payload := map[string]interface{}{}
+			Expect(json.NewDecoder(resp.Body).Decode(&payload)).To(Succeed())
+
+			deps := payload["dependencies"].(map[string]interface{})
+			Expect(deps["postgres"].(map[string]interface{})["status"]).To(Equal("unconfigured"))
+			Expect(deps["nats"].(map[string]interface{})["status"]).To(Equal("unconfigured"))
+		})
+	})
+
+	Describe("httpStatusLabel", func() {
+		It("classifies status codes", func() {
+			Expect(httpStatusLabel(200)).To(Equal("ok"))
+			Expect(httpStatusLabel(502)).To(Equal("error"))
+		})
+	})
+})