// Copyright 2023 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 "src/tint/ir/module.h"
#include "src/tint/ir/ir_test_helper.h"
#include "src/tint/ir/var.h"

namespace tint::ir {
namespace {

using namespace tint::number_suffixes;  // NOLINT

class IR_ModuleTest : public IRTestHelper {
  protected:
    const type::Pointer* ptr(const type::Type* elem) {
        return ty.ptr(builtin::AddressSpace::kFunction, elem, builtin::Access::kReadWrite);
    }
};

TEST_F(IR_ModuleTest, NameOfUnnamed) {
    auto* v = mod.values.Create<ir::Var>(ptr(ty.i32()));
    EXPECT_FALSE(mod.NameOf(v).IsValid());
}

TEST_F(IR_ModuleTest, SetName) {
    auto* v = mod.values.Create<ir::Var>(ptr(ty.i32()));
    EXPECT_EQ(mod.SetName(v, "a").Name(), "a");
    EXPECT_EQ(mod.NameOf(v).Name(), "a");
}

TEST_F(IR_ModuleTest, SetNameRename) {
    auto* v = mod.values.Create<ir::Var>(ptr(ty.i32()));
    EXPECT_EQ(mod.SetName(v, "a").Name(), "a");
    EXPECT_EQ(mod.SetName(v, "b").Name(), "b");
    EXPECT_EQ(mod.NameOf(v).Name(), "b");
}

TEST_F(IR_ModuleTest, SetNameCollision) {
    auto* a = mod.values.Create<ir::Var>(ptr(ty.i32()));
    auto* b = mod.values.Create<ir::Var>(ptr(ty.i32()));
    auto* c = mod.values.Create<ir::Var>(ptr(ty.i32()));
    EXPECT_EQ(mod.SetName(a, "x").Name(), "x");
    EXPECT_EQ(mod.SetName(b, "x_1").Name(), "x_1");
    EXPECT_EQ(mod.SetName(c, "x").Name(), "x_2");
    EXPECT_EQ(mod.NameOf(a).Name(), "x");
    EXPECT_EQ(mod.NameOf(b).Name(), "x_1");
    EXPECT_EQ(mod.NameOf(c).Name(), "x_2");
}

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