// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <sstream>

#include "src/tint/ir/test_helper.h"
#include "src/tint/ir/value.h"

namespace tint::ir {
namespace {

using namespace tint::number_suffixes;  // NOLINT

using IR_ConstantTest = TestHelper;

TEST_F(IR_ConstantTest, f32) {
    auto& b = CreateEmptyBuilder();

    std::stringstream str;

    auto* val = b.builder.Constant(1.2_f);
    EXPECT_EQ(1.2_f, val->AsF32());

    val->ToString(str);
    EXPECT_EQ("1.200000", str.str());

    EXPECT_TRUE(val->IsF32());
    EXPECT_FALSE(val->IsF16());
    EXPECT_FALSE(val->IsI32());
    EXPECT_FALSE(val->IsU32());
    EXPECT_FALSE(val->IsBool());
}

TEST_F(IR_ConstantTest, f16) {
    auto& b = CreateEmptyBuilder();

    std::stringstream str;

    auto* val = b.builder.Constant(1.1_h);
    EXPECT_EQ(1.1_h, val->AsF16());

    val->ToString(str);
    EXPECT_EQ("1.099609", str.str());

    EXPECT_FALSE(val->IsF32());
    EXPECT_TRUE(val->IsF16());
    EXPECT_FALSE(val->IsI32());
    EXPECT_FALSE(val->IsU32());
    EXPECT_FALSE(val->IsBool());
}

TEST_F(IR_ConstantTest, i32) {
    auto& b = CreateEmptyBuilder();

    std::stringstream str;

    auto* val = b.builder.Constant(1_i);
    EXPECT_EQ(1_i, val->AsI32());

    val->ToString(str);
    EXPECT_EQ("1", str.str());

    EXPECT_FALSE(val->IsF32());
    EXPECT_FALSE(val->IsF16());
    EXPECT_TRUE(val->IsI32());
    EXPECT_FALSE(val->IsU32());
    EXPECT_FALSE(val->IsBool());
}

TEST_F(IR_ConstantTest, u32) {
    auto& b = CreateEmptyBuilder();

    std::stringstream str;

    auto* val = b.builder.Constant(2_u);
    EXPECT_EQ(2_u, val->AsU32());

    val->ToString(str);
    EXPECT_EQ("2", str.str());

    EXPECT_FALSE(val->IsF32());
    EXPECT_FALSE(val->IsF16());
    EXPECT_FALSE(val->IsI32());
    EXPECT_TRUE(val->IsU32());
    EXPECT_FALSE(val->IsBool());
}

TEST_F(IR_ConstantTest, bool) {
    auto& b = CreateEmptyBuilder();

    std::stringstream str;

    auto* val = b.builder.Constant(false);
    EXPECT_FALSE(val->AsBool());

    val->ToString(str);
    EXPECT_EQ("false", str.str());

    str.str("");
    val = b.builder.Constant(true);
    EXPECT_TRUE(val->AsBool());

    val->ToString(str);
    EXPECT_EQ("true", str.str());

    EXPECT_FALSE(val->IsF32());
    EXPECT_FALSE(val->IsF16());
    EXPECT_FALSE(val->IsI32());
    EXPECT_FALSE(val->IsU32());
    EXPECT_TRUE(val->IsBool());
}

}  // namespace
}  // namespace tint::ir