add tests

capabilities_client_test.go

@@ -0,0 +1,58 @@
+package protocol_test
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/laravel-ls/protocol"
+)
+
+func Test_CapabilitiesClient_UnmarshalValidJSON(t *testing.T) {
+	data := []byte(`{"window":{"showDocument":{"support":true}}}`)
+
+	var decoded protocol.ClientCapabilities
+	if err := json.Unmarshal(data, &decoded); err != nil {
+		t.Fatalf("unmarshal failed: %v", err)
+	}
+
+	if decoded.Window == nil {
+		t.Fatalf("expected window capabilities to be present")
+	}
+
+	if decoded.Window.ShowDocument == nil {
+		t.Fatalf("expected showDocument capabilities to be present")
+	}
+
+	if !decoded.Window.ShowDocument.Support {
+		t.Fatalf("expected showDocument support to be true")
+	}
+}
+
+func Test_CapabilitiesClient_UnmarshalEmptyObject(t *testing.T) {
+	var decoded protocol.ClientCapabilities
+	if err := json.Unmarshal([]byte(`{}`), &decoded); err != nil {
+		t.Fatalf("unmarshal failed: %v", err)
+	}
+
+	if decoded.Window != nil {
+		t.Fatalf("expected window capabilities to be nil for empty object")
+	}
+}
+
+func Test_CapabilitiesClient_MarshalOmitEmptyWindow(t *testing.T) {
+	original := protocol.ClientCapabilities{}
+
+	data, err := json.Marshal(original)
+	if err != nil {
+		t.Fatalf("marshal failed: %v", err)
+	}
+
+	var payload map[string]any
+	if err := json.Unmarshal(data, &payload); err != nil {
+		t.Fatalf("unmarshal failed: %v", err)
+	}
+
+	if _, ok := payload["window"]; ok {
+		t.Fatalf("expected window to be omitted, got payload: %s", string(data))
+	}
+}