libc/test/UnitTest/PrintfMatcher.h

//===-- PrintfMatcher.h -----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIBC_UTILS_UNITTEST_PRINTF_MATCHER_H
#define LLVM_LIBC_UTILS_UNITTEST_PRINTF_MATCHER_H

#include "src/__support/macros/config.h"
#include "src/__support/printf_core/core_structs.h"
#include "test/UnitTest/Test.h"

namespace LIBC_NAMESPACE_DECL {
namespace testing {

void display(const printf_core::BasicFormatSection<char> &format_section);
void display(const printf_core::BasicFormatSection<wchar_t> &format_section);

template <typename CharT>
class FormatSectionMatcher
    : public Matcher<printf_core::BasicFormatSection<CharT>> {
  printf_core::BasicFormatSection<CharT> expected;
  printf_core::BasicFormatSection<CharT> actual;

public:
  FormatSectionMatcher(printf_core::BasicFormatSection<CharT> expectedValue)
      : expected(expectedValue) {}

  bool match(printf_core::BasicFormatSection<CharT> actualValue) {
    actual = actualValue;
    return expected == actual;
  }

  void explainError() override {
    tlog << "expected format section: ";
    display(expected);
    tlog << '\n';
    tlog << "actual format section  : ";
    display(actual);
    tlog << '\n';
  }
};

template <typename CharT>
FormatSectionMatcher<CharT>
MakeFormatSectionMatcher(printf_core::BasicFormatSection<CharT> expected) {
  return FormatSectionMatcher<CharT>(expected);
}

} // namespace testing
} // namespace LIBC_NAMESPACE_DECL

#define EXPECT_PFORMAT_EQ(expected, actual)                                    \
  EXPECT_THAT(actual,                                                          \
              LIBC_NAMESPACE::testing::MakeFormatSectionMatcher(expected))

#define ASSERT_PFORMAT_EQ(expected, actual)                                    \
  ASSERT_THAT(actual,                                                          \
              LIBC_NAMESPACE::testing::MakeFormatSectionMatcher(expected))

#endif // LLVM_LIBC_UTILS_UNITTEST_PRINTF_MATCHER_H