XCEngine/tests/Components/test_camera_light_component.cpp

#include <gtest/gtest.h>

#include <XCEngine/Components/CameraComponent.h>
#include <XCEngine/Components/LightComponent.h>

#include <sstream>

using namespace XCEngine::Components;

namespace {

TEST(CameraComponent_Test, DefaultValues) {
    CameraComponent camera;

    EXPECT_EQ(camera.GetProjectionType(), CameraProjectionType::Perspective);
    EXPECT_FLOAT_EQ(camera.GetFieldOfView(), 60.0f);
    EXPECT_FLOAT_EQ(camera.GetOrthographicSize(), 5.0f);
    EXPECT_FLOAT_EQ(camera.GetNearClipPlane(), 0.1f);
    EXPECT_FLOAT_EQ(camera.GetFarClipPlane(), 1000.0f);
    EXPECT_TRUE(camera.IsPrimary());
    EXPECT_EQ(camera.GetClearMode(), CameraClearMode::Auto);
}

TEST(CameraComponent_Test, SetterClamping) {
    CameraComponent camera;

    camera.SetFieldOfView(500.0f);
    camera.SetOrthographicSize(-1.0f);
    camera.SetNearClipPlane(-10.0f);
    camera.SetFarClipPlane(0.0f);

    EXPECT_FLOAT_EQ(camera.GetFieldOfView(), 179.0f);
    EXPECT_FLOAT_EQ(camera.GetOrthographicSize(), 0.001f);
    EXPECT_FLOAT_EQ(camera.GetNearClipPlane(), 0.001f);
    EXPECT_GT(camera.GetFarClipPlane(), camera.GetNearClipPlane());
}

TEST(CameraComponent_Test, SerializeRoundTripPreservesClearMode) {
    CameraComponent source;
    source.SetClearMode(CameraClearMode::DepthOnly);

    std::stringstream stream;
    source.Serialize(stream);

    CameraComponent target;
    target.Deserialize(stream);

    EXPECT_EQ(target.GetClearMode(), CameraClearMode::DepthOnly);
}

TEST(LightComponent_Test, DefaultValues) {
    LightComponent light;

    EXPECT_EQ(light.GetLightType(), LightType::Directional);
    EXPECT_FLOAT_EQ(light.GetIntensity(), 1.0f);
    EXPECT_FLOAT_EQ(light.GetRange(), 10.0f);
    EXPECT_FLOAT_EQ(light.GetSpotAngle(), 30.0f);
    EXPECT_FALSE(light.GetCastsShadows());
}

TEST(LightComponent_Test, SetterClamping) {
    LightComponent light;

    light.SetIntensity(-3.0f);
    light.SetRange(-1.0f);
    light.SetSpotAngle(500.0f);

    EXPECT_FLOAT_EQ(light.GetIntensity(), 0.0f);
    EXPECT_FLOAT_EQ(light.GetRange(), 0.001f);
    EXPECT_FLOAT_EQ(light.GetSpotAngle(), 179.0f);
}

} // namespace