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41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
//===- llvm/unittest/Support/TimeValueTest.cpp - Time Value tests ---------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "gtest/gtest.h"
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#include "llvm/Support/TimeValue.h"
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#include <time.h>
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using namespace llvm;
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namespace {
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TEST(TimeValue, time_t) {
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sys::TimeValue now = sys::TimeValue::now();
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time_t now_t = time(nullptr);
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EXPECT_TRUE(std::abs(static_cast<long>(now_t - now.toEpochTime())) < 2);
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}
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TEST(TimeValue, Win32FILETIME) {
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uint64_t epoch_as_filetime = 0x19DB1DED53E8000ULL;
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uint32_t ns = 765432100;
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sys::TimeValue epoch;
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// FILETIME has 100ns of intervals.
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uint64_t ft1970 = epoch_as_filetime + ns / 100;
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epoch.fromWin32Time(ft1970);
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// The "seconds" part in Posix time may be expected as zero.
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EXPECT_EQ(0u, epoch.toEpochTime());
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EXPECT_EQ(ns, static_cast<uint32_t>(epoch.nanoseconds()));
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// Confirm it reversible.
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EXPECT_EQ(ft1970, epoch.toWin32Time());
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}
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}
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