src/tint/lang/hlsl/writer/unary_test.cc

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#include "src/tint/lang/core/fluent_types.h"
#include "src/tint/lang/hlsl/writer/helper_test.h"
#include "src/tint/utils/text/string_stream.h"

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

namespace tint::hlsl::writer {
namespace {

TEST_F(HlslWriterTest, UnaryComplement) {
    auto* func = b.Function("foo", ty.void_(), core::ir::Function::PipelineStage::kCompute);
    func->SetWorkgroupSize(1, 1, 1);
    b.Append(func->Block(), [&] {
        auto* a = b.Var("a", b.Zero<i32>());
        b.Var("b", b.Complement<i32>(b.Load(a)));
        b.Return(func);
    });

    ASSERT_TRUE(Generate()) << err_ << output_.hlsl;
    EXPECT_EQ(output_.hlsl, R"(
[numthreads(1, 1, 1)]
void foo() {
  int a = int(0);
  int b = ~(a);
}

)");
}

TEST_F(HlslWriterTest, UnaryNot) {
    auto* func = b.Function("foo", ty.void_(), core::ir::Function::PipelineStage::kCompute);
    func->SetWorkgroupSize(1, 1, 1);
    b.Append(func->Block(), [&] {
        auto* a = b.Var("a", b.Zero<bool>());
        b.Var("b", b.Not<bool>(b.Load(a)));
        b.Return(func);
    });

    ASSERT_TRUE(Generate()) << err_ << output_.hlsl;
    EXPECT_EQ(output_.hlsl, R"(
[numthreads(1, 1, 1)]
void foo() {
  bool a = false;
  bool b = !(a);
}

)");
}

TEST_F(HlslWriterTest, UnaryNegation) {
    auto* func = b.Function("foo", ty.void_(), core::ir::Function::PipelineStage::kCompute);
    func->SetWorkgroupSize(1, 1, 1);
    b.Append(func->Block(), [&] {
        auto* a = b.Var("a", b.Zero<f32>());
        b.Var("b", b.Negation<f32>(b.Load(a)));
        b.Return(func);
    });

    ASSERT_TRUE(Generate()) << err_ << output_.hlsl;
    EXPECT_EQ(output_.hlsl, R"(
[numthreads(1, 1, 1)]
void foo() {
  float a = 0.0f;
  float b = -(a);
}

)");
}

}  // namespace
}  // namespace tint::hlsl::writer