| // 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. |
| |
| #ifndef SRC_TINT_IR_TEST_HELPER_H_ |
| #define SRC_TINT_IR_TEST_HELPER_H_ |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "gtest/gtest.h" |
| #include "src/tint/ir/builder_impl.h" |
| #include "src/tint/ir/disassembler.h" |
| #include "src/tint/number.h" |
| #include "src/tint/program_builder.h" |
| |
| namespace tint::ir { |
| |
| /// Helper class for testing |
| template <typename BASE> |
| class TestHelperBase : public BASE, public ProgramBuilder { |
| public: |
| TestHelperBase() = default; |
| |
| ~TestHelperBase() override = default; |
| |
| /// Builds and returns a BuilderImpl from the program. |
| /// @note The builder is only created once. Multiple calls to Build() will |
| /// return the same builder without rebuilding. |
| /// @return the builder |
| BuilderImpl& CreateBuilder() { |
| if (gen_) { |
| return *gen_; |
| } |
| diag::Formatter formatter; |
| |
| program = std::make_unique<Program>(std::move(*this)); |
| [&]() { ASSERT_TRUE(program->IsValid()) << formatter.format(program->Diagnostics()); }(); |
| gen_ = std::make_unique<BuilderImpl>(program.get()); |
| return *gen_; |
| } |
| |
| /// Injects a flow block into the builder |
| /// @returns the injected block |
| ir::Block* InjectFlowBlock() { |
| auto* block = gen_->builder.CreateBlock(); |
| gen_->current_flow_block = block; |
| return block; |
| } |
| |
| /// Creates a BuilderImpl without an originating program. This is used for testing the |
| /// expressions which don't require the full builder implementation. The current flow block |
| /// is initialized with an empty block. |
| /// @returns the BuilderImpl for testing. |
| BuilderImpl& CreateEmptyBuilder() { |
| program = std::make_unique<Program>(); |
| gen_ = std::make_unique<BuilderImpl>(program.get()); |
| gen_->current_flow_block = gen_->builder.CreateBlock(); |
| return *gen_; |
| } |
| |
| /// The program built with a call to Build() |
| std::unique_ptr<Program> program; |
| |
| private: |
| std::unique_ptr<BuilderImpl> gen_; |
| }; |
| using TestHelper = TestHelperBase<testing::Test>; |
| |
| template <typename T> |
| using TestParamHelper = TestHelperBase<testing::TestWithParam<T>>; |
| |
| } // namespace tint::ir |
| |
| #endif // SRC_TINT_IR_TEST_HELPER_H_ |