sources/android/support/tests/wchar_unittest.cc

#include <stddef.h>
#include <wchar.h>

#include <minitest/minitest.h>

TEST(wchar, wchar_limits) {
  ASSERT_EQ(sizeof(__WCHAR_TYPE__), sizeof(wchar_t));
  ASSERT_EQ(sizeof(int), sizeof(wint_t));
#ifdef __arm__
  ASSERT_GT(wchar_t(0), wchar_t(-1));
  ASSERT_EQ(wchar_t(0), WCHAR_MIN);
  ASSERT_EQ(wchar_t(0xffffffff), WCHAR_MAX);
#else
  ASSERT_LT(wchar_t(0), wchar_t(-1));
  ASSERT_EQ(wchar_t(0x80000000), WCHAR_MIN);
  ASSERT_EQ(wchar_t(0x7fffffff), WCHAR_MAX);
#endif
}

TEST(wchar, wcschr) {
  static const wchar_t kString[] = L"abcda";
  EXPECT_EQ(kString + 0, wcschr(kString, L'a'));
  EXPECT_EQ(kString + 1, wcschr(kString, L'b'));
  EXPECT_EQ(kString + 2, wcschr(kString, L'c'));
  EXPECT_EQ(kString + 3, wcschr(kString, L'd'));
  EXPECT_FALSE(wcschr(kString, L'e'));
  EXPECT_EQ(kString + 5, wcschr(kString, L'\0'));
}

TEST(wchar, wcsrchr) {
  static const wchar_t kString[] = L"abcda";
  EXPECT_EQ(kString + 4, wcsrchr(kString, L'a'));
  EXPECT_EQ(kString + 1, wcsrchr(kString, L'b'));
  EXPECT_EQ(kString + 2, wcsrchr(kString, L'c'));
  EXPECT_EQ(kString + 3, wcsrchr(kString, L'd'));
  EXPECT_FALSE(wcsrchr(kString, L'e'));
  EXPECT_EQ(kString + 5, wcsrchr(kString, L'\0'));
}