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// Copyright 2017 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// This file contains tests for FromDateTime() normalization, which is
// time-zone independent so we just use UTC throughout.
#include <cstdint>
#include <limits>
#include "gtest/gtest.h"
#include "absl/time/internal/test_util.h"
#include "absl/time/time.h"
namespace {
TEST(TimeNormCase, SimpleOverflow) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc =
absl::ConvertDateTime(2013, 11, 15, 16, 32, 59 + 1, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 16, 33, 0, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15, 16, 59 + 1, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 17, 0, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15, 23 + 1, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 16, 0, 32, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 30 + 1, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 12, 1, 16, 32, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 12 + 1, 15, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2014, 1, 15, 16, 32, 14, 0, false, "UTC");
}
TEST(TimeNormCase, SimpleUnderflow) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc = ConvertDateTime(2013, 11, 15, 16, 32, 0 - 1, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 16, 31, 59, 0, false, "UTC");
tc = ConvertDateTime(2013, 11, 15, 16, 0 - 1, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 15, 15, 59, 14, 0, false, "UTC");
tc = ConvertDateTime(2013, 11, 15, 0 - 1, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 14, 23, 32, 14, 0, false, "UTC");
tc = ConvertDateTime(2013, 11, 1 - 1, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 10, 31, 16, 32, 14, 0, false, "UTC");
tc = ConvertDateTime(2013, 1 - 1, 15, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2012, 12, 15, 16, 32, 14, 0, false, "UTC");
}
TEST(TimeNormCase, MultipleOverflow) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc = ConvertDateTime(2013, 12, 31, 23, 59, 59 + 1, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2014, 1, 1, 0, 0, 0, 0, false, "UTC");
}
TEST(TimeNormCase, MultipleUnderflow) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc = absl::ConvertDateTime(2014, 1, 1, 0, 0, 0 - 1, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 12, 31, 23, 59, 59, 0, false, "UTC");
}
TEST(TimeNormCase, OverflowLimits) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc;
absl::Time::Breakdown bd;
const int kintmax = std::numeric_limits<int>::max();
tc = absl::ConvertDateTime(0, kintmax, kintmax, kintmax, kintmax, kintmax,
utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 185085715, 11, 27, 12, 21, 7, 0, false, "UTC");
const int kintmin = std::numeric_limits<int>::min();
tc = absl::ConvertDateTime(0, kintmin, kintmin, kintmin, kintmin, kintmin,
utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, -185085717, 10, 31, 10, 37, 52, 0, false,
"UTC");
const int64_t max_year = std::numeric_limits<int64_t>::max();
tc = absl::ConvertDateTime(max_year, 12, 31, 23, 59, 59, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
EXPECT_EQ(absl::InfiniteFuture(), tc.pre);
const int64_t min_year = std::numeric_limits<int64_t>::min();
tc = absl::ConvertDateTime(min_year, 1, 1, 0, 0, 0, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
EXPECT_EQ(absl::InfinitePast(), tc.pre);
}
TEST(TimeNormCase, ComplexOverflow) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc =
ConvertDateTime(2013, 11, 15, 16, 32, 14 + 123456789, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2017, 10, 14, 14, 5, 23, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15, 16, 32 + 1234567, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2016, 3, 22, 0, 39, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15, 16 + 123456, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2027, 12, 16, 16, 32, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15 + 1234, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2017, 4, 2, 16, 32, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11 + 123, 15, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2024, 2, 15, 16, 32, 14, 0, false, "UTC");
}
TEST(TimeNormCase, ComplexUnderflow) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc =
absl::ConvertDateTime(1999, 3, 0, 0, 0, 0, utc); // year 400
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 1999, 2, 28, 0, 0, 0, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15, 16, 32, 14 - 123456789, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2009, 12, 17, 18, 59, 5, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15, 16, 32 - 1234567, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2011, 7, 12, 8, 25, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15, 16 - 123456, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 1999, 10, 16, 16, 32, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11, 15 - 1234, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2010, 6, 30, 16, 32, 14, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11 - 123, 15, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2003, 8, 15, 16, 32, 14, 0, false, "UTC");
}
TEST(TimeNormCase, Mishmash) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc =
absl::ConvertDateTime(2013, 11 - 123, 15 + 1234, 16 - 123456,
32 + 1234567, 14 - 123456789, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 1991, 5, 9, 3, 6, 5, 0, false, "UTC");
tc = absl::ConvertDateTime(2013, 11 + 123, 15 - 1234, 16 + 123456,
32 - 1234567, 14 + 123456789, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2036, 5, 24, 5, 58, 23, 0, false, "UTC");
// Here is a normalization case we got wrong for a while. Because the
// day is converted to "1" within a 400-year (146097-day) period, we
// didn't need to roll the month and so we didn't mark it as normalized.
tc = absl::ConvertDateTime(2013, 11, -146097 + 1, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 1613, 11, 1, 16, 32, 14, 0, false, "UTC");
// Even though the month overflow compensates for the day underflow,
// this should still be marked as normalized.
tc = absl::ConvertDateTime(2013, 11 + 400 * 12, -146097 + 1, 16, 32, 14, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 11, 1, 16, 32, 14, 0, false, "UTC");
}
TEST(TimeNormCase, LeapYears) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::TimeConversion tc =
absl::ConvertDateTime(2013, 2, 28 + 1, 0, 0, 0, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
absl::Time::Breakdown bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2013, 3, 1, 0, 0, 0, 0, false, "UTC");
tc = absl::ConvertDateTime(2012, 2, 28 + 1, 0, 0, 0, utc);
EXPECT_FALSE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2012, 2, 29, 0, 0, 0, 0, false, "UTC");
tc = absl::ConvertDateTime(2000, 2, 28 + 1, 0, 0, 0, utc);
EXPECT_FALSE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 2000, 2, 29, 0, 0, 0, 0, false, "UTC");
tc = absl::ConvertDateTime(1900, 2, 28 + 1, 0, 0, 0, utc);
EXPECT_TRUE(tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
bd = tc.pre.In(utc);
ABSL_INTERNAL_EXPECT_TIME(bd, 1900, 3, 1, 0, 0, 0, 0, false, "UTC");
}
// Convert all the days from 1970-1-1 to 1970-1-146097 (aka 2369-12-31)
// and check that they normalize to the expected time. 146097 days span
// the 400-year Gregorian cycle used during normalization.
TEST(TimeNormCase, AllTheDays) {
const absl::TimeZone utc = absl::UTCTimeZone();
absl::Time exp_time = absl::UnixEpoch();
for (int day = 1; day <= 146097; ++day) {
absl::TimeConversion tc = absl::ConvertDateTime(1970, 1, day, 0, 0, 0, utc);
EXPECT_EQ(day > 31, tc.normalized);
EXPECT_EQ(absl::TimeConversion::UNIQUE, tc.kind);
EXPECT_EQ(exp_time, tc.pre);
exp_time += absl::Hours(24);
}
}
} // namespace