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#include "longs.h"
#include <library/cpp/testing/unittest/registar.h>
#include <library/cpp/digest/old_crc/crc.h>
#include <util/string/util.h>
#include <util/stream/output.h>
#include <util/system/hi_lo.h>
Y_UNIT_TEST_SUITE(TLongsTest) {
Y_UNIT_TEST(TestLongs) {
i16 x16 = 40;
i64 x64 = 40;
i64 y64;
TString s;
s += Sprintf("x16=0x%x\n", (int)x16);
s += Sprintf("LO_8(x16)=0x%x HI_8(x16)=0x%x\n\n", (int)Lo8(x16), (int)Hi8(x16));
char buf[100];
memset(buf, 0, 100);
char* p = buf;
int l = out_long(x64, buf);
s += Sprintf("x64=0x%" PRIi64 "\n", x64);
s += Sprintf("LO_32(x64)=0x%" PRIu32 " HI_32(x64)=0x%" PRIu32 "\n", (ui32)Lo32(x64), (ui32)Hi32(x64));
s += Sprintf("buf=%s, l=%d: ", buf, l);
for (int i = 0; i < l; i++) {
s += Sprintf("0x%02x ", buf[i]);
}
s += Sprintf("\n");
p = buf;
in_long(y64, p);
s += Sprintf("x=0x%" PRIi64 " y=0x%" PRIi64 "\n", x64, y64);
if (x64 != y64) {
s += Sprintf("Error: y64 != x64\n");
} else {
s += Sprintf("OK\n");
}
UNIT_ASSERT_EQUAL(Crc<ui64>(s.data(), s.size()), 7251624297500315779ULL); // WTF?
}
template <typename TSignedInt>
void TestOneValue(TSignedInt value) {
char buffer[sizeof(TSignedInt) + 1];
auto bytes = out_long(value, buffer);
TSignedInt readValue = 0;
auto readBytes = in_long(readValue, buffer);
UNIT_ASSERT_EQUAL(bytes, readBytes);
UNIT_ASSERT_EQUAL(bytes, len_long(value));
UNIT_ASSERT_EQUAL(value, readValue);
}
template <typename TSignedInt>
void TestCornerCasesImpl(int maxPow) {
for (int i = 0; i <= maxPow; ++i) {
TestOneValue<TSignedInt>((TSignedInt)(1ull << i));
TestOneValue<TSignedInt>((TSignedInt)((1ull << i) - 1));
TestOneValue<TSignedInt>((TSignedInt)((1ull << i) + 1));
}
}
Y_UNIT_TEST(TestCornerCases) {
TestCornerCasesImpl<i32>(31);
TestCornerCasesImpl<i64>(63);
}
}
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