/// Return a random unicode term, like StressIndexingTest.
String randomString() {
int32_t end = random->nextInt(20);
if (buffer.size() < 1 + end) {
buffer.resize((int32_t)((double)(1 + end) * 1.25));
}
for (int32_t i = 0; i < end; ++i) {
int32_t t = random->nextInt(5);
if (t == 0 && i < end - 1) {
#ifdef LPP_UNICODE_CHAR_SIZE_2
// Make a surrogate pair
// High surrogate
buffer[i++] = (wchar_t)nextInt(0xd800, 0xdc00);
// Low surrogate
buffer[i] = (wchar_t)nextInt(0xdc00, 0xe000);
#else
buffer[i] = (wchar_t)nextInt(0xdc00, 0xe000);
#endif
} else if (t <= 1) {
buffer[i] = (wchar_t)nextInt(0x01, 0x80);
} else if (t == 2) {
buffer[i] = (wchar_t)nextInt(0x80, 0x800);
} else if (t == 3) {
buffer[i] = (wchar_t)nextInt(0x800, 0xd800);
} else if (t == 4) {
buffer[i] = (wchar_t)nextInt(0xe000, 0xfff0);
}
}
return String(buffer.get(), end);
}
