75 lines
2.4 KiB
Go
75 lines
2.4 KiB
Go
// Copyright 2014 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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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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