Files
clang-p2996/libc/test/UnitTest/MemoryMatcher.cpp
Roland McGrath d2be9826dd [libc] Clean up alternate test framework support (#89659)
This replaces the old macros LIBC_COPT_TEST_USE_FUCHSIA and
LIBC_COPT_TEST_USE_PIGWEED with LIBC_COPT_TEST_ZXTEST and
LIBC_COPT_TEST_GTEST, respectively.  These are really not about
whether the code is in the Fuchsia build or in the Pigweed build,
but just about what test framework is being used.  The gtest
framework can be used in many contexts, and the zxtest framework
is not always what's used in the Fuchsia build.

The test/UnitTest/Test.h wrapper header now provides the macro
LIBC_TEST_HAS_MATCHERS() for use in `#if` conditionals on use of
gmock-style matchers, replacing `#if` conditionals that test the
framework selection macros directly.
2024-04-22 15:18:02 -07:00

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2.0 KiB
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//===-- MemoryMatcher.cpp ---------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
#include "MemoryMatcher.h"
#include "test/UnitTest/Test.h"
#if LIBC_TEST_HAS_MATCHERS()
using LIBC_NAMESPACE::testing::tlog;
namespace LIBC_NAMESPACE {
namespace testing {
template <typename T>
bool equals(const cpp::span<T> &Span1, const cpp::span<T> &Span2,
bool &mismatch_size, size_t &mismatch_index) {
if (Span1.size() != Span2.size()) {
mismatch_size = true;
return false;
}
for (size_t Index = 0; Index < Span1.size(); ++Index)
if (Span1[Index] != Span2[Index]) {
mismatch_index = Index;
return false;
}
return true;
}
bool MemoryMatcher::match(MemoryView actualValue) {
actual = actualValue;
return equals(expected, actual, mismatch_size, mismatch_index);
}
static void display(char C) {
const auto print = [](unsigned char I) {
tlog << static_cast<char>(I < 10 ? '0' + I : 'A' + I - 10);
};
print(static_cast<unsigned char>(C) / 16);
print(static_cast<unsigned char>(C) & 15);
}
static void display(MemoryView View) {
for (auto C : View) {
tlog << ' ';
display(C);
}
}
void MemoryMatcher::explainError() {
if (mismatch_size) {
tlog << "Size mismatch :";
tlog << "expected : ";
tlog << expected.size();
tlog << '\n';
tlog << "actual : ";
tlog << actual.size();
tlog << '\n';
} else {
tlog << "Mismatch at position : ";
tlog << mismatch_index;
tlog << " / ";
tlog << expected.size();
tlog << "\n";
tlog << "expected :";
display(expected);
tlog << '\n';
tlog << "actual :";
display(actual);
tlog << '\n';
}
}
} // namespace testing
} // namespace LIBC_NAMESPACE
#endif // LIBC_TEST_HAS_MATCHERS()