test: Add control serialization test

Add a test that exercises the ControlSerializer to serialize and
deserialize ControlInfoMap and ControlList.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

test/serialization/serialization_test.cpp

@@ -0,0 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * serialization_test.cpp - Base class for serialization tests
+ */
+
+#include "serialization_test.h"
+
+#include <algorithm>
+#include <iostream>
+#include <map>
+
+#include <libcamera/camera.h>
+#include <libcamera/camera_manager.h>
+#include <libcamera/controls.h>
+
+#include "test.h"
+
+using namespace std;
+using namespace libcamera;
+
+bool SerializationTest::equals(const ControlInfoMap &lhs, const ControlInfoMap &rhs)
+{
+	std::map<unsigned int, ControlRange> rlhs;
+	std::transform(lhs.begin(), lhs.end(), std::inserter(rlhs, rlhs.end()),
+			[](const ControlInfoMap::value_type &v)
+				-> decltype(rlhs)::value_type
+			{
+				return { v.first->id(), v.second };
+			});
+
+	std::map<unsigned int, ControlRange> rrhs;
+	std::transform(rhs.begin(), rhs.end(), std::inserter(rrhs, rrhs.end()),
+			[](const ControlInfoMap::value_type &v)
+				-> decltype(rrhs)::value_type
+			{
+				return { v.first->id(), v.second };
+			});
+
+	if (rlhs == rrhs)
+		return true;
+
+	cerr << "lhs:" << endl;
+	for (const auto &value : rlhs)
+		cerr << "- " << value.first << ": "
+		     << value.second.toString() << endl;
+
+	cerr << "rhs:" << endl;
+	for (const auto &value : rrhs)
+		cerr << "- " << value.first << ": "
+		     << value.second.toString() << endl;
+
+	return false;
+}
+
+bool SerializationTest::equals(const ControlList &lhs, const ControlList &rhs)
+{
+	std::map<unsigned int, ControlValue> rlhs;
+	std::transform(lhs.begin(), lhs.end(), std::inserter(rlhs, rlhs.end()),
+			[](const std::pair<unsigned int, ControlValue> &v)
+				-> decltype(rlhs)::value_type
+			{
+				return { v.first, v.second };
+			});
+
+	std::map<unsigned int, ControlValue> rrhs;
+	std::transform(rhs.begin(), rhs.end(), std::inserter(rrhs, rrhs.end()),
+			[](const std::pair<unsigned int, ControlValue> &v)
+				-> decltype(rrhs)::value_type
+			{
+				return { v.first, v.second };
+			});
+
+	if (rlhs == rrhs)
+		return true;
+
+	cerr << "lhs:" << endl;
+	for (const auto &value : rlhs)
+		cerr << "- " << value.first << ": "
+		     << value.second.toString() << endl;
+
+	cerr << "rhs:" << endl;
+	for (const auto &value : rrhs)
+		cerr << "- " << value.first << ": "
+		     << value.second.toString() << endl;
+
+	return false;
+}