110 lines
4.7 KiB
C++
110 lines
4.7 KiB
C++
// Copyright 2021 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/time/time_delta_from_string.h"
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#include "base/time/time.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace base {
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namespace {
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// Adapted from Abseil's TEST(Duration, ParseDuration):
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// https://cs.chromium.org/chromium/src/third_party/abseil-cpp/absl/time/duration_test.cc?l=1660&rcl=93c58ec988d77f4277f9c9d237d3507991fbd719
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TEST(TimeDeltaFromStringTest, ParseTimeDeltaTest) {
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// No specified unit. Should only work for zero and infinity.
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EXPECT_EQ(TimeDeltaFromString("0"), TimeDelta());
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EXPECT_EQ(TimeDeltaFromString("+0"), TimeDelta());
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EXPECT_EQ(TimeDeltaFromString("-0"), TimeDelta());
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EXPECT_EQ(TimeDeltaFromString("inf"), TimeDelta::Max());
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EXPECT_EQ(TimeDeltaFromString("+inf"), TimeDelta::Max());
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EXPECT_EQ(TimeDeltaFromString("-inf"), TimeDelta::Min());
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EXPECT_EQ(TimeDeltaFromString("infBlah"), absl::nullopt);
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// Illegal input forms.
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EXPECT_EQ(TimeDeltaFromString(""), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("0.0"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString(".0"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("."), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("01"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("1"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("-1"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("2"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("2 s"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString(".s"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("-.s"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("s"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString(" 2s"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("2s "), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString(" 2s "), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("2mt"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("1e3s"), absl::nullopt);
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// One unit type.
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EXPECT_EQ(TimeDeltaFromString("1ns"), Nanoseconds(1));
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EXPECT_EQ(TimeDeltaFromString("1us"), Microseconds(1));
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EXPECT_EQ(TimeDeltaFromString("1ms"), Milliseconds(1));
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EXPECT_EQ(TimeDeltaFromString("1s"), Seconds(1));
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EXPECT_EQ(TimeDeltaFromString("2m"), Minutes(2));
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EXPECT_EQ(TimeDeltaFromString("2h"), Hours(2));
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EXPECT_EQ(TimeDeltaFromString("2d"), Days(2));
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// Huge counts of a unit. 9223372036854775807 == 2^63 - 1.
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EXPECT_EQ(TimeDeltaFromString("9223372036854775807us"),
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Microseconds(9223372036854775807));
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EXPECT_EQ(TimeDeltaFromString("-9223372036854775807us"),
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Microseconds(-9223372036854775807));
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// Overflow count. Note the "93" at the beginning (instead of "92").
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EXPECT_EQ(TimeDeltaFromString("9323372036854775807us"), absl::nullopt);
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// Overflow overall duration.
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EXPECT_EQ(TimeDeltaFromString("9323372036854s"), TimeDelta::Max());
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EXPECT_EQ(TimeDeltaFromString("-9323372036854s"), TimeDelta::Min());
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// Multiple units.
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EXPECT_EQ(TimeDeltaFromString("1d2h3m"), Days(1) + Hours(2) + Minutes(3));
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EXPECT_EQ(TimeDeltaFromString("2h3m4s"), Hours(2) + Minutes(3) + Seconds(4));
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EXPECT_EQ(TimeDeltaFromString("3m4s5us"),
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Minutes(3) + Seconds(4) + Microseconds(5));
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EXPECT_EQ(TimeDeltaFromString("2h3m4s5ms6us7ns"),
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Hours(2) + Minutes(3) + Seconds(4) + Milliseconds(5) +
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Microseconds(6) + Nanoseconds(7));
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// Multiple units out of order.
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EXPECT_EQ(TimeDeltaFromString("2us3m4s5h"),
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Hours(5) + Minutes(3) + Seconds(4) + Microseconds(2));
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// Fractional values of units.
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EXPECT_EQ(TimeDeltaFromString("1.5ns"), 1.5 * Nanoseconds(1));
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EXPECT_EQ(TimeDeltaFromString("1.5us"), 1.5 * Microseconds(1));
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EXPECT_EQ(TimeDeltaFromString("1.5ms"), 1.5 * Milliseconds(1));
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EXPECT_EQ(TimeDeltaFromString("1.5s"), 1.5 * Seconds(1));
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EXPECT_EQ(TimeDeltaFromString("1.5m"), 1.5 * Minutes(1));
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EXPECT_EQ(TimeDeltaFromString("1.5h"), 1.5 * Hours(1));
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EXPECT_EQ(TimeDeltaFromString("1.5d"), 1.5 * Days(1));
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// Huge fractional counts of a unit.
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EXPECT_EQ(TimeDeltaFromString("0.4294967295s"),
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Nanoseconds(429496729) + Nanoseconds(1) / 2);
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EXPECT_EQ(TimeDeltaFromString("0.429496729501234567890123456789s"),
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Nanoseconds(429496729) + Nanoseconds(1) / 2);
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// Negative durations.
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EXPECT_EQ(TimeDeltaFromString("-1s"), Seconds(-1));
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EXPECT_EQ(TimeDeltaFromString("-1m"), Minutes(-1));
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EXPECT_EQ(TimeDeltaFromString("-1h"), Hours(-1));
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EXPECT_EQ(TimeDeltaFromString("-1d"), Days(-1));
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EXPECT_EQ(TimeDeltaFromString("-1h2s"), -(Hours(1) + Seconds(2)));
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EXPECT_EQ(TimeDeltaFromString("1h-2s"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("-1h-2s"), absl::nullopt);
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EXPECT_EQ(TimeDeltaFromString("-1h -2s"), absl::nullopt);
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}
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} // namespace
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} // namespace base
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