fl_display_monitor_test.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "flutter/shell/platform/linux/fl_display_monitor.h"
#include "flutter/shell/platform/embedder/test_utils/proc_table_replacement.h"
#include "flutter/shell/platform/linux/fl_engine_private.h"
 
#include "flutter/shell/platform/linux/testing/linux_test.h"
#include "gtest/gtest.h"
 
class FlDisplayMonitorTest : public flutter::testing::LinuxTest {};
 
TEST_F(FlDisplayMonitorTest, Test) {
  StartEngine();
 
  bool called = false;
  fl_engine_get_embedder_api(engine)->NotifyDisplayUpdate = MOCK_ENGINE_PROC(
      NotifyDisplayUpdate,
      ([&called](auto engine, FlutterEngineDisplaysUpdateType update_type,
                 const FlutterEngineDisplay* displays, size_t displays_length) {
        called = true;
 
        EXPECT_EQ(displays_length, 1u);
 
        return kSuccess;
      }));
 
  g_autoptr(FlDisplayMonitor) monitor =
      fl_display_monitor_new(engine, gdk_display_get_default());
  EXPECT_FALSE(called);
  fl_display_monitor_start(monitor);
  EXPECT_TRUE(called);
}