Function AssertInvalidUTF8

cpp/src/arrow/util/utf8_util_test.cc:158–158

void AssertValidUTF8(const std::string& s) { ASSERT_TRUE(IsValidUTF8(s)); }

void AssertInvalidUTF8(const std::string& s) { ASSERT_TRUE(IsInvalidUTF8(s)); }

void AssertValidASCII(const std::string& s) {
  ASSERT_TRUE(IsValidASCII(s));