src/tint/lang/wgsl/writer/ir_to_program/ir_to_program_test.h

// Copyright 2023 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
//    list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
//    this list of conditions and the following disclaimer in the documentation
//    and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
//    contributors may be used to endorse or promote products derived from
//    this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef SRC_TINT_LANG_WGSL_WRITER_IR_TO_PROGRAM_IR_TO_PROGRAM_TEST_H_
#define SRC_TINT_LANG_WGSL_WRITER_IR_TO_PROGRAM_IR_TO_PROGRAM_TEST_H_

#include <string>

#include "src/tint/lang/core/ir/ir_helper_test.h"

namespace tint::wgsl::writer {

/// Class used for IR to Program tests
class IRToProgramTest : public core::ir::IRTestHelper {
  public:
    /// The result of Run()
    struct Result {
        /// The resulting WGSL
        std::string wgsl;
        /// The resulting AST
        std::string ast;
        /// The resulting IR
        std::string ir;
        /// The resulting error
        std::string err;
    };
    /// @returns the WGSL generated from the IR
    Result Run();
};

#define EXPECT_WGSL(expected_wgsl)                                       \
    do {                                                                 \
        if (auto got = Run(); got.err.empty()) {                         \
            auto expected = std::string(tint::TrimSpace(expected_wgsl)); \
            if (!expected.empty()) {                                     \
                expected = "\n" + expected + "\n";                       \
            }                                                            \
            EXPECT_EQ(expected, got.wgsl) << "IR: " << got.ir;           \
        } else {                                                         \
            FAIL() << got.err << std::endl                               \
                   << "IR: " << got.ir << std::endl                      \
                   << "AST: " << got.ast << std::endl;                   \
        }                                                                \
    } while (false)

}  // namespace tint::wgsl::writer

#endif  // SRC_TINT_LANG_WGSL_WRITER_IR_TO_PROGRAM_IR_TO_PROGRAM_TEST_H_