src/tint/lang/spirv/writer/ast_printer/scalar_constant_test.cc

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#include "src/tint/lang/spirv/writer/ast_printer/scalar_constant.h"
#include "src/tint/lang/spirv/writer/ast_printer/helper_test.h"

namespace tint::spirv::writer {
namespace {

using SpirvASTPrinterScalarConstantTest = TestHelper;

TEST_F(SpirvASTPrinterScalarConstantTest, Equality) {
    ScalarConstant a{};
    ScalarConstant b{};
    EXPECT_EQ(a, b);

    a.kind = ScalarConstant::Kind::kU32;
    EXPECT_NE(a, b);
    b.kind = ScalarConstant::Kind::kU32;
    EXPECT_EQ(a, b);

    a.value.b = true;
    EXPECT_NE(a, b);
    b.value.b = true;
    EXPECT_EQ(a, b);
}

TEST_F(SpirvASTPrinterScalarConstantTest, U32) {
    auto c = ScalarConstant::U32(123);
    EXPECT_EQ(c.value.u32, 123u);
    EXPECT_EQ(c.kind, ScalarConstant::Kind::kU32);
}

TEST_F(SpirvASTPrinterScalarConstantTest, F16) {
    auto c = ScalarConstant::F16(123.456f);
    // 123.456f will be quantized to f16 123.4375h, bit pattern 0x57b7
    EXPECT_EQ(c.value.f16.bits_representation, 0x57b7u);
    EXPECT_EQ(c.kind, ScalarConstant::Kind::kF16);
}

}  // namespace
}  // namespace tint::spirv::writer