test(parsing): add 229 unit tests across 18 config/parsing packages

Covering nil-input safety, plugin backends (HTTP/gRPC/default), loaders
(File/HTTP/Redis), selector strategies, edge cases (empty/invalid inputs),
and hop-to-node metadata inheritance. All tests passing.

config/parsing/ingress/parse_test.go

@@ -0,0 +1,141 @@
+package ingress
+
+import (
+	"io"
+	"testing"
+
+	"github.com/go-gost/core/logger"
+	"github.com/go-gost/x/config"
+	xlogger "github.com/go-gost/x/logger"
+)
+
+func TestMain(m *testing.M) {
+	logger.SetDefault(xlogger.NewLogger(xlogger.OutputOption(io.Discard)))
+	m.Run()
+}
+
+func TestParseIngress_Nil(t *testing.T) {
+	ing := ParseIngress(nil)
+	if ing != nil {
+		t.Fatal("expected nil for nil config")
+	}
+}
+
+func TestParseIngress_PluginHTTP(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "http-ing",
+		Plugin: &config.PluginConfig{
+			Type: "http",
+			Addr: "127.0.0.1:9000",
+		},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}
+
+func TestParseIngress_PluginGRPC(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "grpc-ing",
+		Plugin: &config.PluginConfig{
+			Type:  "grpc",
+			Addr:  "127.0.0.1:9001",
+			Token: "secret",
+			TLS: &config.TLSConfig{
+				Secure:     true,
+				ServerName: "ingress.local",
+			},
+		},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}
+
+func TestParseIngress_PluginDefaultType(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "default-ing",
+		Plugin: &config.PluginConfig{
+			Addr: "127.0.0.1:9002",
+		},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}
+
+func TestParseIngress_WithRules(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "rule-ing",
+		Rules: []*config.IngressRuleConfig{
+			{Hostname: "example.com", Endpoint: "10.0.0.1:8080"},
+			{Hostname: "test.com", Endpoint: "10.0.0.2:9090"},
+		},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}
+
+func TestParseIngress_EmptyRules(t *testing.T) {
+	// Rules with empty hostname or endpoint should be skipped
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "partial-ing",
+		Rules: []*config.IngressRuleConfig{
+			{Hostname: "", Endpoint: "nope:8080"},  // skipped
+			{Hostname: "nope.com", Endpoint: ""},    // skipped
+			{Hostname: "valid.com", Endpoint: "10.0.0.1:8080"}, // kept
+		},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress even with partial rules")
+	}
+}
+
+func TestParseIngress_FileLoader(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "file-ing",
+		File: &config.FileLoader{Path: "/tmp/ingress.txt"},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}
+
+func TestParseIngress_HTTPLoader(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "http-ing",
+		HTTP: &config.HTTPLoader{URL: "http://localhost:8080/ingress"},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}
+
+func TestParseIngress_RedisLoader(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "redis-ing",
+		Redis: &config.RedisLoader{
+			Addr: "127.0.0.1:6379",
+			Key:  "ingress-key",
+			Type: "hash",
+		},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}
+
+func TestParseIngress_RedisSetLoader(t *testing.T) {
+	ing := ParseIngress(&config.IngressConfig{
+		Name: "redis-set-ing",
+		Redis: &config.RedisLoader{
+			Addr: "127.0.0.1:6379",
+			Key:  "ingress-set",
+			Type: "set",
+		},
+	})
+	if ing == nil {
+		t.Fatal("expected non-nil ingress")
+	}
+}