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#include "src/tint/lang/msl/writer/raise/builtin_polyfill.h"

#include <utility>

#include "src/tint/lang/core/ir/transform/helper_test.h"
#include "src/tint/lang/core/type/array.h"
#include "src/tint/lang/core/type/atomic.h"
#include "src/tint/lang/core/type/builtin_structs.h"
#include "src/tint/lang/core/type/depth_texture.h"
#include "src/tint/lang/core/type/multisampled_texture.h"
#include "src/tint/lang/core/type/sampled_texture.h"
#include "src/tint/lang/core/type/storage_texture.h"

namespace tint::msl::writer::raise {
namespace {

using MslWriter_BuiltinPolyfillTest = core::ir::transform::TransformTest;

TEST_F(MslWriter_BuiltinPolyfillTest, WorkgroupBarrier) {
    auto* func = b.Function("foo", ty.void_());
    func->SetStage(core::ir::Function::PipelineStage::kCompute);
    func->SetWorkgroupSize(1, 1, 1);
    b.Append(func->Block(), [&] {
        b.Call(ty.void_(), core::BuiltinFn::kWorkgroupBarrier);
        b.Return(func);
    });

    auto* src = R"(
%foo = @compute @workgroup_size(1, 1, 1) func():void {
  $B1: {
    %2:void = workgroupBarrier
    ret
  }
}
)";
    EXPECT_EQ(src, str());

    auto* expect = R"(
%foo = @compute @workgroup_size(1, 1, 1) func():void {
  $B1: {
    %2:void = msl.threadgroup_barrier 4u
    ret
  }
}
)";

    Run(BuiltinPolyfill);

    EXPECT_EQ(expect, str());
}

TEST_F(MslWriter_BuiltinPolyfillTest, StorageBarrier) {
    auto* func = b.Function("foo", ty.void_());
    func->SetStage(core::ir::Function::PipelineStage::kCompute);
    func->SetWorkgroupSize(1, 1, 1);
    b.Append(func->Block(), [&] {
        b.Call(ty.void_(), core::BuiltinFn::kStorageBarrier);
        b.Return(func);
    });

    auto* src = R"(
%foo = @compute @workgroup_size(1, 1, 1) func():void {
  $B1: {
    %2:void = storageBarrier
    ret
  }
}
)";
    EXPECT_EQ(src, str());

    auto* expect = R"(
%foo = @compute @workgroup_size(1, 1, 1) func():void {
  $B1: {
    %2:void = msl.threadgroup_barrier 1u
    ret
  }
}
)";

    Run(BuiltinPolyfill);

    EXPECT_EQ(expect, str());
}

TEST_F(MslWriter_BuiltinPolyfillTest, TextureBarrier) {
    auto* func = b.Function("foo", ty.void_());
    func->SetStage(core::ir::Function::PipelineStage::kCompute);
    func->SetWorkgroupSize(1, 1, 1);
    b.Append(func->Block(), [&] {
        b.Call(ty.void_(), core::BuiltinFn::kTextureBarrier);
        b.Return(func);
    });

    auto* src = R"(
%foo = @compute @workgroup_size(1, 1, 1) func():void {
  $B1: {
    %2:void = textureBarrier
    ret
  }
}
)";
    EXPECT_EQ(src, str());

    auto* expect = R"(
%foo = @compute @workgroup_size(1, 1, 1) func():void {
  $B1: {
    %2:void = msl.threadgroup_barrier 2u
    ret
  }
}
)";

    Run(BuiltinPolyfill);

    EXPECT_EQ(expect, str());
}

}  // namespace
}  // namespace tint::msl::writer::raise