#include "fixtures/OpenGLTestFixture.h"
#include "XCEngine/RHI/OpenGL/OpenGLFence.h"

using namespace XCEngine::RHI;

TEST_F(OpenGLTestFixture, Fence_Initialize_Unsignaled) {
    OpenGLFence fence;

    bool result = fence.Initialize(0);

    ASSERT_TRUE(result);

    fence.Shutdown();
}

TEST_F(OpenGLTestFixture, Fence_Initialize_Signaled) {
    OpenGLFence fence;

    bool result = fence.Initialize(1);

    ASSERT_TRUE(result);

    fence.Shutdown();
}

TEST_F(OpenGLTestFixture, Fence_Signal_Wait) {
    OpenGLFence fence;
    fence.Initialize(0);

    fence.Signal(1);

    fence.Wait(1);

    EXPECT_EQ(fence.GetCompletedValue(), 1u);

    fence.Shutdown();
}

TEST_F(OpenGLTestFixture, Fence_Timeline_SignalIncrement) {
    OpenGLFence fence;
    fence.Initialize(0);

    fence.Signal(1);
    fence.Wait(1);
    EXPECT_EQ(fence.GetCompletedValue(), 1u);

    fence.Signal(5);
    fence.Wait(5);
    EXPECT_EQ(fence.GetCompletedValue(), 5u);

    fence.Signal(10);
    fence.Wait(10);
    EXPECT_EQ(fence.GetCompletedValue(), 10u);

    fence.Shutdown();
}

TEST_F(OpenGLTestFixture, Fence_Timeline_SignalDecrement) {
    OpenGLFence fence;
    fence.Initialize(0);

    fence.Signal(5);
    fence.Wait(5);
    EXPECT_EQ(fence.GetCompletedValue(), 5u);

    fence.Signal(3);
    fence.Wait(3);
    EXPECT_EQ(fence.GetCompletedValue(), 3u);

    fence.Shutdown();
}

TEST_F(OpenGLTestFixture, Fence_Timeline_MultipleSignals) {
    OpenGLFence fence;
    fence.Initialize(0);

    fence.Signal(10);
    fence.Wait(10);

    fence.Signal(20);
    fence.Wait(20);

    fence.Signal(30);
    fence.Wait(30);

    EXPECT_EQ(fence.GetCompletedValue(), 30u);

    fence.Shutdown();
}

TEST_F(OpenGLTestFixture, Fence_Timeline_WaitSmallerThanCompleted) {
    OpenGLFence fence;
    fence.Initialize(0);

    fence.Signal(5);
    fence.Wait(5);

    fence.Wait(3);

    EXPECT_GE(fence.GetCompletedValue(), 5u);

    fence.Shutdown();
}

TEST_F(OpenGLTestFixture, Fence_Timeline_GetCompletedValue_Stages) {
    OpenGLFence fence;
    fence.Initialize(0);

    EXPECT_EQ(fence.GetCompletedValue(), 0u);

    fence.Signal(1);
    fence.Wait(1);
    EXPECT_EQ(fence.GetCompletedValue(), 1u);

    fence.Signal(10);
    fence.Wait(10);
    EXPECT_EQ(fence.GetCompletedValue(), 10u);

    fence.Signal(5);
    fence.Wait(5);
    EXPECT_EQ(fence.GetCompletedValue(), 5u);

    fence.Shutdown();
}