1// Copyright 2020 Google LLC
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//      http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14package bttest
15
16import (
17	"math"
18	"testing"
19	"time"
20
21	"cloud.google.com/go/bigtable"
22)
23
24func TestTimestampConversion(t *testing.T) {
25	// 1. Test a Timestamp converting to Time.
26	var ts1 bigtable.Timestamp = 1583863200000000
27	t1 := ts1.Time().UTC()
28	want1 := time.Date(2020, time.March, 10, 18, 0, 0, 0, time.UTC)
29
30	if !want1.Equal(t1) {
31		t.Errorf("Mismatched time got %v wanted %v", t1, want1)
32	}
33	// 2. Test a reversed Timestamp converting to Time.
34	reverse := math.MaxInt64 - ts1
35
36	got2 := reverse.Time().UTC()
37	want2 := time.Date(294196, time.October, 31, 10, 0, 54, 775807000, time.UTC)
38
39	if !want2.Equal(got2) {
40		t.Errorf("Mismatched time got %v wanted %v", got2, want2)
41	}
42
43	// 3. Test a Time converted to Timestamp then converted back to Time.
44	t2 := time.Date(2016, time.October, 3, 14, 7, 7, 0, time.UTC)
45	ts2 := bigtable.Timestamp(t2.UnixNano() / 1000)
46
47	got3 := ts2.Time().UTC()
48	want3 := time.Date(2016, time.October, 3, 14, 7, 7, 0, time.UTC)
49	if !want3.Equal(got3) {
50		t.Errorf("Mismatched time got %v wanted %v", got3, want3)
51	}
52}
53