// Copyright 2019 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "dawn/tests/unittests/validation/ValidationTest.h"

namespace {

    class ToggleValidationTest : public ValidationTest {};

    // Tests querying the detail of a toggle from dawn::native::InstanceBase works correctly.
    TEST_F(ToggleValidationTest, QueryToggleInfo) {
        // Query with a valid toggle name
        {
            const char* kValidToggleName = "emulate_store_and_msaa_resolve";
            const dawn::native::ToggleInfo* toggleInfo = instance->GetToggleInfo(kValidToggleName);
            ASSERT_NE(nullptr, toggleInfo);
            ASSERT_NE(nullptr, toggleInfo->name);
            ASSERT_NE(nullptr, toggleInfo->description);
            ASSERT_NE(nullptr, toggleInfo->url);
        }

        // Query with an invalid toggle name
        {
            const char* kInvalidToggleName = "!@#$%^&*";
            const dawn::native::ToggleInfo* toggleInfo =
                instance->GetToggleInfo(kInvalidToggleName);
            ASSERT_EQ(nullptr, toggleInfo);
        }
    }

    // Tests overriding toggles when creating a device works correctly.
    TEST_F(ToggleValidationTest, OverrideToggleUsage) {
        // Create device with a valid name of a toggle
        {
            const char* kValidToggleName = "emulate_store_and_msaa_resolve";
            wgpu::DeviceDescriptor descriptor;
            wgpu::DawnTogglesDeviceDescriptor togglesDesc;
            descriptor.nextInChain = &togglesDesc;
            togglesDesc.forceEnabledToggles = &kValidToggleName;
            togglesDesc.forceEnabledTogglesCount = 1;

            WGPUDevice deviceWithToggle = adapter.CreateDevice(&descriptor);
            std::vector<const char*> toggleNames = dawn::native::GetTogglesUsed(deviceWithToggle);
            bool validToggleExists = false;
            for (const char* toggle : toggleNames) {
                if (strcmp(toggle, kValidToggleName) == 0) {
                    validToggleExists = true;
                }
            }
            ASSERT_EQ(validToggleExists, true);
        }

        // Create device with an invalid toggle name
        {
            const char* kInvalidToggleName = "!@#$%^&*";
            wgpu::DeviceDescriptor descriptor;
            wgpu::DawnTogglesDeviceDescriptor togglesDesc;
            descriptor.nextInChain = &togglesDesc;
            togglesDesc.forceEnabledToggles = &kInvalidToggleName;
            togglesDesc.forceEnabledTogglesCount = 1;

            WGPUDevice deviceWithToggle = adapter.CreateDevice(&descriptor);
            std::vector<const char*> toggleNames = dawn::native::GetTogglesUsed(deviceWithToggle);
            bool InvalidToggleExists = false;
            for (const char* toggle : toggleNames) {
                if (strcmp(toggle, kInvalidToggleName) == 0) {
                    InvalidToggleExists = true;
                }
            }
            ASSERT_EQ(InvalidToggleExists, false);
        }
    }

    TEST_F(ToggleValidationTest, TurnOffVsyncWithToggle) {
        const char* kValidToggleName = "turn_off_vsync";
        wgpu::DeviceDescriptor descriptor;
        wgpu::DawnTogglesDeviceDescriptor togglesDesc;
        descriptor.nextInChain = &togglesDesc;
        togglesDesc.forceEnabledToggles = &kValidToggleName;
        togglesDesc.forceEnabledTogglesCount = 1;

        WGPUDevice deviceWithToggle = adapter.CreateDevice(&descriptor);
        std::vector<const char*> toggleNames = dawn::native::GetTogglesUsed(deviceWithToggle);
        bool validToggleExists = false;
        for (const char* toggle : toggleNames) {
            if (strcmp(toggle, kValidToggleName) == 0) {
                validToggleExists = true;
            }
        }
        ASSERT_EQ(validToggleExists, true);
    }
}  // anonymous namespace