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#include "src/tint/lang/core/type/atomic.h"
#include "src/tint/lang/core/type/reference.h"
#include "src/tint/lang/wgsl/resolver/resolver.h"
#include "src/tint/lang/wgsl/resolver/resolver_helper_test.h"

#include "gmock/gmock.h"

namespace tint::resolver {
namespace {

using namespace tint::core::number_suffixes;  // NOLINT

struct ResolverAtomicTest : public resolver::TestHelper, public testing::Test {};

TEST_F(ResolverAtomicTest, GlobalWorkgroupI32) {
    auto* g = GlobalVar("a", ty.atomic(Source{{12, 34}}, ty.i32()), core::AddressSpace::kWorkgroup);

    EXPECT_TRUE(r()->Resolve()) << r()->error();
    ASSERT_TRUE(TypeOf(g)->Is<core::type::Reference>());
    auto* atomic = TypeOf(g)->UnwrapRef()->As<core::type::Atomic>();
    ASSERT_NE(atomic, nullptr);
    EXPECT_TRUE(atomic->Type()->Is<core::type::I32>());
}

TEST_F(ResolverAtomicTest, GlobalWorkgroupU32) {
    auto* g = GlobalVar("a", ty.atomic(Source{{12, 34}}, ty.u32()), core::AddressSpace::kWorkgroup);

    EXPECT_TRUE(r()->Resolve()) << r()->error();
    ASSERT_TRUE(TypeOf(g)->Is<core::type::Reference>());
    auto* atomic = TypeOf(g)->UnwrapRef()->As<core::type::Atomic>();
    ASSERT_NE(atomic, nullptr);
    EXPECT_TRUE(atomic->Type()->Is<core::type::U32>());
}

TEST_F(ResolverAtomicTest, GlobalStorageStruct) {
    auto* s = Structure("s", Vector{Member("a", ty.atomic(Source{{12, 34}}, ty.i32()))});
    auto* g = GlobalVar("g", ty.Of(s), core::AddressSpace::kStorage, core::Access::kReadWrite,
                        Binding(0_a), Group(0_a));

    EXPECT_TRUE(r()->Resolve()) << r()->error();
    ASSERT_TRUE(TypeOf(g)->Is<core::type::Reference>());
    auto* str = TypeOf(g)->UnwrapRef()->As<sem::Struct>();
    ASSERT_NE(str, nullptr);
    ASSERT_EQ(str->Members().Length(), 1u);
    auto* atomic = str->Members()[0]->Type()->As<core::type::Atomic>();
    ASSERT_NE(atomic, nullptr);
    ASSERT_TRUE(atomic->Type()->Is<core::type::I32>());
}

}  // namespace
}  // namespace tint::resolver