/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "gtest/gtest.h"

#include "gfxPrefs.h"

#ifdef GFX_DECL_PREF

#error "This is not supposed to be defined outside of gfxPrefs.h"

#endif

// If the default values for any of these preferences change,

// just modify the test to match. We are only testing against

// a particular value to make sure we receive the correct

// result through this API.

TEST(GfxPrefs, Singleton) {

  gfxPrefs::GetSingleton();

  ASSERT_TRUE(gfxPrefs::SingletonExists());

}

TEST(GfxPrefs, LiveValues) {

  gfxPrefs::GetSingleton();

  ASSERT_TRUE(gfxPrefs::SingletonExists());

  // Live boolean, default false

  ASSERT_FALSE(gfxPrefs::LayersDumpTexture());

  // Live int32_t, default 23456

  ASSERT_TRUE(gfxPrefs::LayerScopePort() == 23456);

  // Live uint32_t, default 2

  ASSERT_TRUE(gfxPrefs::MSAALevel() == 2);

}

TEST(GfxPrefs, OnceValues) {

  gfxPrefs::GetSingleton();

  ASSERT_TRUE(gfxPrefs::SingletonExists());

  // Once boolean, default true

  ASSERT_TRUE(gfxPrefs::WorkAroundDriverBugs());

  // Once boolean, default false

  ASSERT_FALSE(gfxPrefs::LayersDump());

  // Once int32_t, default 95

  ASSERT_TRUE(gfxPrefs::CanvasSkiaGLCacheSize() == 96);

  // Once uint32_t, default 5

  ASSERT_TRUE(gfxPrefs::APZMaxVelocityQueueSize() == 5);

  // Once float, default -1 (should be OK with ==)

  ASSERT_TRUE(gfxPrefs::APZMaxVelocity() == -1.0f);

}

TEST(GfxPrefs, Set) {

  gfxPrefs::GetSingleton();

  ASSERT_TRUE(gfxPrefs::SingletonExists());

  // Once boolean, default false

  ASSERT_FALSE(gfxPrefs::LayersDump());

  gfxPrefs::SetLayersDump(true);

  ASSERT_TRUE(gfxPrefs::LayersDump());

  gfxPrefs::SetLayersDump(false);

  ASSERT_FALSE(gfxPrefs::LayersDump());

  // Live boolean, default false

  ASSERT_FALSE(gfxPrefs::LayersDumpTexture());

  gfxPrefs::SetLayersDumpTexture(true);

  ASSERT_TRUE(gfxPrefs::LayersDumpTexture());

  gfxPrefs::SetLayersDumpTexture(false);

  ASSERT_FALSE(gfxPrefs::LayersDumpTexture());

  // Once float, default -1

  ASSERT_TRUE(gfxPrefs::APZMaxVelocity() == -1.0f);

  gfxPrefs::SetAPZMaxVelocity(1.75f);

  ASSERT_TRUE(gfxPrefs::APZMaxVelocity() == 1.75f);

  gfxPrefs::SetAPZMaxVelocity(-1.0f);

  ASSERT_TRUE(gfxPrefs::APZMaxVelocity() == -1.0f);

}

// Randomly test the function we use in nsExceptionHandler.cpp here:

extern bool SimpleNoCLibDtoA(double aValue, char* aBuffer, int aBufferLength);

TEST(GfxPrefs, StringUtility)

{

  char testBuffer[64];

  double testVal[] = {13.4,

                      3324243.42,

                      0.332424342,

                      864.0,

                      86400 * 100000000.0 * 10000000000.0 * 10000000000.0 * 100.0,

                      86400.0 * 366.0 * 100.0 + 14243.44332};

  for (size_t i=0; i<mozilla::ArrayLength(testVal); i++) {

    ASSERT_TRUE(SimpleNoCLibDtoA(testVal[i], testBuffer, sizeof(testBuffer)));

    ASSERT_TRUE(fabs(1.0 - atof(testBuffer)/testVal[i]) < 0.0001);

  }

  // We do not like negative numbers (random limitation)

  ASSERT_FALSE(SimpleNoCLibDtoA(-864.0, testBuffer, sizeof(testBuffer)));

  // It won't fit into 32:

  ASSERT_FALSE(SimpleNoCLibDtoA(testVal[4], testBuffer, sizeof(testBuffer)/2));

}