mock_gles_unittests.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/testing/testing.h"  // IWYU pragma: keep
#include "gtest/gtest.h"
#include "impeller/renderer/backend/gles/proc_table_gles.h"
#include "impeller/renderer/backend/gles/test/mock_gles.h"
 
namespace impeller {
namespace testing {
 
// This test just checks that the proc table is initialized correctly.
//
// If this test doesn't pass, no test that uses the proc table will pass.
TEST(MockGLES, CanInitialize) {
  auto mock_gles = MockGLES::Init();
 
  std::string_view vendor(reinterpret_cast<const char*>(
      mock_gles->GetProcTable().GetString(GL_VENDOR)));
  EXPECT_EQ(vendor, "MockGLES");
}
 
// Tests we can call two functions and capture the calls.
TEST(MockGLES, CapturesPushAndPopDebugGroup) {
  auto mock_gles = MockGLES::Init();
 
  auto& gl = mock_gles->GetProcTable();
  gl.PushDebugGroupKHR(GL_DEBUG_SOURCE_APPLICATION_KHR, 0, -1, "test");
  gl.PopDebugGroupKHR();
 
  auto calls = mock_gles->GetCapturedCalls();
  EXPECT_EQ(calls, std::vector<std::string>(
                       {"PushDebugGroupKHR", "PopDebugGroupKHR"}));
}
 
// Tests that if we call a function we have not mocked, it's OK.
TEST(MockGLES, CanCallUnmockedFunction) {
  auto mock_gles = MockGLES::Init();
 
  auto& gl = mock_gles->GetProcTable();
  gl.DeleteFramebuffers(1, nullptr);
 
  // Test should still complete.
  // If we end up mocking DeleteFramebuffers, delete this test.
}
 
}  // namespace testing
}  // namespace impeller