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65 lines
1.9 KiB
Go
65 lines
1.9 KiB
Go
// Copyright 2012 Google Inc. All Rights Reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package datastore
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import (
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"testing"
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"time"
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)
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func TestUnixMicro(t *testing.T) {
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// Test that all these time.Time values survive a round trip to unix micros.
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testCases := []time.Time{
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{},
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time.Date(2, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(23, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(234, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(1000, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(1600, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(1700, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(1800, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(1900, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Unix(-1e6, -1000),
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time.Unix(-1e6, 0),
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time.Unix(-1e6, +1000),
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time.Unix(-60, -1000),
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time.Unix(-60, 0),
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time.Unix(-60, +1000),
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time.Unix(-1, -1000),
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time.Unix(-1, 0),
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time.Unix(-1, +1000),
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time.Unix(0, -3000),
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time.Unix(0, -2000),
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time.Unix(0, -1000),
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time.Unix(0, 0),
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time.Unix(0, +1000),
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time.Unix(0, +2000),
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time.Unix(+60, -1000),
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time.Unix(+60, 0),
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time.Unix(+60, +1000),
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time.Unix(+1e6, -1000),
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time.Unix(+1e6, 0),
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time.Unix(+1e6, +1000),
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time.Date(1999, 12, 31, 23, 59, 59, 999000, time.UTC),
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time.Date(2000, 1, 1, 0, 0, 0, 0, time.UTC),
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time.Date(2006, 1, 2, 15, 4, 5, 678000, time.UTC),
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time.Date(2009, 11, 10, 23, 0, 0, 0, time.UTC),
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time.Date(3456, 1, 1, 0, 0, 0, 0, time.UTC),
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}
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for _, tc := range testCases {
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got := fromUnixMicro(toUnixMicro(tc))
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if !got.Equal(tc) {
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t.Errorf("got %q, want %q", got, tc)
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}
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}
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// Test that a time.Time that isn't an integral number of microseconds
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// is not perfectly reconstructed after a round trip.
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t0 := time.Unix(0, 123)
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t1 := fromUnixMicro(toUnixMicro(t0))
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if t1.Nanosecond()%1000 != 0 || t0.Nanosecond()%1000 == 0 {
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t.Errorf("quantization to µs: got %q with %d ns, started with %d ns", t1, t1.Nanosecond(), t0.Nanosecond())
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}
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}
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