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// 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/lang/core/ir/var.h"
#include "gmock/gmock.h"
#include "gtest/gtest-spi.h"
#include "src/tint/lang/core/ir/builder.h"
#include "src/tint/lang/core/ir/instruction.h"
#include "src/tint/lang/core/ir/ir_helper_test.h"
namespace tint::ir {
namespace {
using namespace tint::core::fluent_types; // NOLINT
using namespace tint::number_suffixes; // NOLINT
using IR_VarTest = IRTestHelper;
TEST_F(IR_VarTest, Fail_NullType) {
EXPECT_FATAL_FAILURE(
{
Module mod;
Builder b{mod};
b.Var(nullptr);
},
"");
}
TEST_F(IR_VarTest, Results) {
auto* var = b.Var(ty.ptr<function, f32>());
EXPECT_TRUE(var->HasResults());
EXPECT_FALSE(var->HasMultiResults());
EXPECT_TRUE(var->Result()->Is<InstructionResult>());
EXPECT_EQ(var->Result()->Source(), var);
}
TEST_F(IR_VarTest, Initializer_Usage) {
Module mod;
Builder b{mod};
auto* var = b.Var(ty.ptr<function, f32>());
auto* init = b.Constant(1_f);
var->SetInitializer(init);
EXPECT_THAT(init->Usages(), testing::UnorderedElementsAre(Usage{var, 0u}));
var->SetInitializer(nullptr);
EXPECT_TRUE(init->Usages().IsEmpty());
}
} // namespace
} // namespace tint::ir