src/tint/lang/msl/writer/ast_printer/cast_test.cc

// Copyright 2020 The Dawn & Tint Authors
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#include "src/tint/lang/msl/writer/ast_printer/helper_test.h"
#include "src/tint/utils/text/string_stream.h"

namespace tint::msl::writer {
namespace {

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

using MslASTPrinterTest = TestHelper;

TEST_F(MslASTPrinterTest, EmitExpression_Cast_Scalar) {
    auto* cast = Call<f32>(1_i);
    WrapInFunction(cast);

    ASTPrinter& gen = Build();

    StringStream out;
    ASSERT_TRUE(gen.EmitExpression(out, cast)) << gen.Diagnostics();
    EXPECT_EQ(out.str(), "1.0f");
}

TEST_F(MslASTPrinterTest, EmitExpression_Cast_Vector) {
    auto* cast = Call<vec3<f32>>(Call<vec3<i32>>(1_i, 2_i, 3_i));
    WrapInFunction(cast);

    ASTPrinter& gen = Build();

    StringStream out;
    ASSERT_TRUE(gen.EmitExpression(out, cast)) << gen.Diagnostics();
    EXPECT_EQ(out.str(), "float3(1.0f, 2.0f, 3.0f)");
}

TEST_F(MslASTPrinterTest, EmitExpression_Cast_IntMin) {
    auto* cast = Call<u32>(i32(std::numeric_limits<int32_t>::min()));
    WrapInFunction(cast);

    ASTPrinter& gen = Build();

    StringStream out;
    ASSERT_TRUE(gen.EmitExpression(out, cast)) << gen.Diagnostics();
    EXPECT_EQ(out.str(), "2147483648u");
}

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