chore: add Caddy config to ServiceSpec, load x-caddy to it

pkg/api/service_test.go

@@ -0,0 +1,104 @@
+package api
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestServiceSpec_Validate_CaddyAndPorts(t *testing.T) {
+	tests := []struct {
+		name    string
+		spec    ServiceSpec
+		wantErr string
+	}{
+		{
+			name: "valid with neither Caddy nor Ports",
+			spec: ServiceSpec{
+				Name: "test",
+				Container: ContainerSpec{
+					Image: "nginx:latest",
+				},
+			},
+			wantErr: "",
+		},
+		{
+			name: "valid with Caddy only",
+			spec: ServiceSpec{
+				Name: "test",
+				Container: ContainerSpec{
+					Image: "nginx:latest",
+				},
+				Caddy: &CaddySpec{
+					Config: "example.com {\n  reverse_proxy :8080\n}",
+				},
+			},
+			wantErr: "",
+		},
+		{
+			name: "valid with Ports only",
+			spec: ServiceSpec{
+				Name: "test",
+				Container: ContainerSpec{
+					Image: "nginx:latest",
+				},
+				Ports: []PortSpec{
+					{
+						ContainerPort: 80,
+						Protocol:      ProtocolHTTP,
+					},
+				},
+			},
+			wantErr: "",
+		},
+		{
+			name: "valid with empty Caddy config and Ports",
+			spec: ServiceSpec{
+				Name: "test",
+				Container: ContainerSpec{
+					Image: "nginx:latest",
+				},
+				Caddy: &CaddySpec{
+					Config: "",
+				},
+				Ports: []PortSpec{
+					{
+						ContainerPort: 80,
+						Protocol:      ProtocolHTTP,
+					},
+				},
+			},
+			wantErr: "",
+		},
+		{
+			name: "invalid with both Caddy and Ports",
+			spec: ServiceSpec{
+				Name: "test",
+				Container: ContainerSpec{
+					Image: "nginx:latest",
+				},
+				Caddy: &CaddySpec{
+					Config: "example.com {\n  reverse_proxy :8080\n}",
+				},
+				Ports: []PortSpec{
+					{
+						ContainerPort: 80,
+						Protocol:      ProtocolHTTP,
+					},
+				},
+			},
+			wantErr: "ports and Caddy configuration cannot be specified simultaneously",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := tt.spec.Validate()
+			if tt.wantErr == "" {
+				require.NoError(t, err)
+			} else {
+				require.ErrorContains(t, err, tt.wantErr)
+			}
+		})
+	}
+}