// Copyright 2022 The Dawn & Tint Authors
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#include "src/tint/lang/core/type/vector.h"

#include "src/tint/lang/core/type/f32.h"
#include "src/tint/lang/core/type/helper_test.h"
#include "src/tint/lang/core/type/i32.h"
#include "src/tint/lang/core/type/manager.h"
#include "src/tint/lang/core/type/u32.h"
#include "src/tint/lang/core/type/void.h"

namespace tint::core::type {
namespace {

using VectorTest = TestHelper;

TEST_F(VectorTest, Creation) {
    Manager ty;
    auto* a = ty.vec2i();
    auto* b = ty.vec2i();
    auto* c = ty.vec2f();
    auto* d = ty.vec3f();

    EXPECT_EQ(a->Type(), ty.i32());
    EXPECT_EQ(a->Width(), 2u);

    EXPECT_EQ(a, b);
    EXPECT_NE(a, c);
    EXPECT_NE(a, d);
}

TEST_F(VectorTest, Creation_Packed) {
    Manager ty;
    auto* v = ty.vec3f();
    auto* p1 = ty.Get<Vector>(ty.f32(), 3u, true);
    auto* p2 = ty.Get<Vector>(ty.f32(), 3u, true);

    EXPECT_FALSE(v->Packed());

    EXPECT_EQ(p1->Type(), ty.f32());
    EXPECT_EQ(p1->Width(), 3u);
    EXPECT_TRUE(p1->Packed());

    EXPECT_NE(v, p1);
    EXPECT_EQ(p1, p2);
}

TEST_F(VectorTest, Hash) {
    Manager ty;
    auto* a = ty.vec2i();
    auto* b = ty.vec2i();

    EXPECT_EQ(a->unique_hash, b->unique_hash);
}

TEST_F(VectorTest, Equals) {
    Manager ty;
    auto* a = ty.vec2i();
    auto* b = ty.vec2i();
    auto* c = ty.vec2f();
    auto* d = ty.vec3f();

    EXPECT_TRUE(a->Equals(*b));
    EXPECT_FALSE(a->Equals(*c));
    EXPECT_FALSE(a->Equals(*d));
    EXPECT_FALSE(a->Equals(Void{}));
}

TEST_F(VectorTest, FriendlyName) {
    Manager ty;
    auto* v = ty.vec3f();
    EXPECT_EQ(v->FriendlyName(), "vec3<f32>");
}

TEST_F(VectorTest, FriendlyName_Packed) {
    Manager ty;
    auto* f32 = ty.f32();
    auto* v = ty.Get<Vector>(f32, 3u, true);
    EXPECT_EQ(v->FriendlyName(), "__packed_vec3<f32>");
}

TEST_F(VectorTest, Clone) {
    Manager ty;
    auto* a = ty.vec2i();

    core::type::Manager mgr;
    core::type::CloneContext ctx{{nullptr}, {nullptr, &mgr}};

    auto* vec = a->Clone(ctx);
    EXPECT_TRUE(vec->Type()->Is<I32>());
    EXPECT_EQ(vec->Width(), 2u);
    EXPECT_FALSE(vec->Packed());
}

TEST_F(VectorTest, Clone_Packed) {
    Manager ty;
    auto* a = ty.Get<Vector>(ty.i32(), 3u, true);

    core::type::Manager mgr;
    core::type::CloneContext ctx{{nullptr}, {nullptr, &mgr}};

    auto* vec = a->Clone(ctx);
    EXPECT_TRUE(vec->Type()->Is<I32>());
    EXPECT_EQ(vec->Width(), 3u);
    EXPECT_TRUE(vec->Packed());
}

}  // namespace
}  // namespace tint::core::type
