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// Copyright 2023 The Dawn & Tint Authors
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#ifndef SRC_TINT_LANG_GLSL_WRITER_PRINTER_HELPER_TEST_H_
#define SRC_TINT_LANG_GLSL_WRITER_PRINTER_HELPER_TEST_H_
#include <string>
#include "gtest/gtest.h"
#include "src/tint/lang/core/ir/builder.h"
#include "src/tint/lang/core/ir/validator.h"
#include "src/tint/lang/glsl/writer/common/version.h"
#include "src/tint/lang/glsl/writer/printer/printer.h"
#include "src/tint/lang/glsl/writer/raise/raise.h"
namespace tint::glsl::writer {
/// Base helper class for testing the GLSL generator implementation.
template <typename BASE>
class GlslPrinterTestHelperBase : public BASE {
public:
/// The test module.
core::ir::Module mod;
/// The test builder.
core::ir::Builder b{mod};
/// The type manager.
core::type::Manager& ty{mod.Types()};
/// The GLSL version
Version version{};
protected:
/// Validation errors
std::string err_;
/// Generated GLSL
std::string output_;
/// Run the writer on the IR module and validate the result.
/// @returns true if generation and validation succeeded
bool Generate() {
if (auto raised = Raise(mod); raised != Success) {
err_ = raised.Failure().reason.Str();
return false;
}
auto result = Print(mod, version);
if (result != Success) {
err_ = result.Failure().reason.Str();
return false;
}
output_ = result.Get();
return true;
}
/// @returns the metal header string
std::string GlslHeader() const {
std::stringstream ver;
ver << "#version " << version.major_version << version.minor_version << "0";
if (version.IsES()) {
ver << " es";
}
ver << "\n";
return ver.str();
}
};
/// Test class
using GlslPrinterTest = GlslPrinterTestHelperBase<testing::Test>;
/// Test param class
template <typename T>
using GlslPrinterTestWithParam = GlslPrinterTestHelperBase<testing::TestWithParam<T>>;
} // namespace tint::glsl::writer
#endif // SRC_TINT_LANG_GLSL_WRITER_PRINTER_HELPER_TEST_H_