test: add tests for route validation scenarios

internal/route/route_test.go

@@ -0,0 +1,153 @@
+package route
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/yusing/go-proxy/internal/common"
+	"github.com/yusing/go-proxy/internal/docker"
+	loadbalance "github.com/yusing/go-proxy/internal/net/gphttp/loadbalancer/types"
+	"github.com/yusing/go-proxy/internal/route/types"
+	"github.com/yusing/go-proxy/internal/watcher/health"
+)
+
+func TestRouteValidate(t *testing.T) {
+	t.Run("AlreadyValidated", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeHTTP,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80},
+			Metadata: Metadata{
+				isValidated: true,
+			},
+		}
+		err := r.Validate()
+		require.NoError(t, err, "Validate should return nil for already validated route")
+	})
+
+	t.Run("ReservedPort", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeHTTP,
+			Host:   "localhost",
+			Port:   types.Port{Proxy: common.ProxyHTTPPort},
+		}
+		err := r.Validate()
+		require.Error(t, err, "Validate should return error for localhost with reserved port")
+		require.Contains(t, err.Error(), "reserved for godoxy")
+	})
+
+	t.Run("ListeningPortWithHTTP", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeHTTP,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80, Listening: 1234},
+		}
+		err := r.Validate()
+		require.Error(t, err, "Validate should return error for HTTP scheme with listening port")
+		require.Contains(t, err.Error(), "unexpected listening port")
+	})
+
+	t.Run("DisabledHealthCheckWithLoadBalancer", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeHTTP,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80},
+			HealthCheck: &health.HealthCheckConfig{
+				Disable: true,
+			},
+			LoadBalance: &loadbalance.Config{
+				Link: "test-link",
+			}, // Minimal LoadBalance config with non-empty Link will be checked by UseLoadBalance
+		}
+		err := r.Validate()
+		require.Error(t, err, "Validate should return error for disabled healthcheck with loadbalancer")
+		require.Contains(t, err.Error(), "cannot disable healthcheck")
+	})
+
+	t.Run("FileServerScheme", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeFileServer,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80},
+			Root:   "/tmp", // Root is required for file server
+		}
+		err := r.Validate()
+		require.NoError(t, err, "Validate should not return error for valid file server route")
+		require.NotNil(t, r.impl, "Impl should be initialized")
+	})
+
+	t.Run("HTTPScheme", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeHTTP,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80},
+		}
+		err := r.Validate()
+		require.NoError(t, err, "Validate should not return error for valid HTTP route")
+		require.NotNil(t, r.impl, "Impl should be initialized")
+	})
+
+	t.Run("TCPScheme", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeTCP,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80, Listening: 8080},
+		}
+		err := r.Validate()
+		require.NoError(t, err, "Validate should not return error for valid TCP route")
+		require.NotNil(t, r.impl, "Impl should be initialized")
+	})
+
+	t.Run("DockerContainer", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeHTTP,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80},
+			Metadata: Metadata{
+				Container: &docker.Container{
+					ContainerID: "test-id",
+					Image: &docker.ContainerImage{
+						Name: "test-image",
+					},
+				},
+			},
+		}
+		err := r.Validate()
+		require.NoError(t, err, "Validate should not return error for valid docker container route")
+		require.NotNil(t, r.ProxyURL, "ProxyURL should be set")
+	})
+
+	t.Run("InvalidScheme", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: "invalid",
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80},
+		}
+		require.Panics(t, func() {
+			_ = r.Validate()
+		}, "Validate should panic for invalid scheme")
+	})
+
+	t.Run("ModifiedFields", func(t *testing.T) {
+		r := &Route{
+			Alias:  "test",
+			Scheme: types.SchemeHTTP,
+			Host:   "example.com",
+			Port:   types.Port{Proxy: 80},
+		}
+		err := r.Validate()
+		require.NoError(t, err)
+		require.True(t, r.isValidated)
+		require.NotNil(t, r.ProxyURL)
+		require.NotNil(t, r.HealthCheck)
+	})
+}