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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package date
import (
"math/rand"
"testing"
"time"
)
func TestEncode(t *testing.T) {
cases := []int{
0, 1, 28, 30, 31, 32, 364, 365, 366, 367, 500, 1000, 10000, 100000,
}
tBase := time.Date(1970, time.January, 1, 0, 0, 0, 0, time.UTC)
for i, c := range cases {
d := encode(tBase.AddDate(0, 0, c))
if d != PeriodOfDays(c) {
t.Errorf("Encode(%v) == %v, want %v", i, d, c)
}
d = encode(tBase.AddDate(0, 0, -c))
if d != PeriodOfDays(-c) {
t.Errorf("Encode(%v) == %v, want %v", i, d, c)
}
}
}
func TestEncodeDecode(t *testing.T) {
cases := []struct {
year int
month time.Month
day int
}{
{1969, time.December, 31},
{1970, time.January, 1},
{1970, time.January, 2},
{2000, time.February, 28},
{2000, time.February, 29},
{2000, time.March, 1},
{2004, time.February, 28},
{2004, time.February, 29},
{2004, time.March, 1},
{2100, time.February, 28},
{2100, time.February, 29},
{2100, time.March, 1},
{0, time.January, 1},
{1, time.February, 3},
{19, time.March, 4},
{100, time.April, 5},
{2000, time.May, 6},
{30000, time.June, 7},
{400000, time.July, 8},
{5000000, time.August, 9},
{-1, time.September, 11},
{-19, time.October, 12},
{-100, time.November, 13},
{-2000, time.December, 14},
{-30000, time.February, 15},
{-400000, time.May, 16},
{-5000000, time.September, 17},
}
for _, c := range cases {
tIn := time.Date(c.year, c.month, c.day, 0, 0, 0, 0, time.UTC)
d := encode(tIn)
tOut := decode(d)
if !tIn.Equal(tOut) {
t.Errorf("EncodeDecode(%v) == %v, want %v", c, tOut, tIn)
}
}
}
func TestDecodeEncode(t *testing.T) {
for i := 0; i < 1000; i++ {
c := PeriodOfDays(rand.Int31())
d := encode(decode(c))
if d != c {
t.Errorf("DecodeEncode(%v) == %v, want %v", i, d, c)
}
}
for i := 0; i < 1000; i++ {
c := -PeriodOfDays(rand.Int31())
d := encode(decode(c))
if d != c {
t.Errorf("DecodeEncode(%v) == %v, want %v", i, d, c)
}
}
}
// TestZone checks that the conversions between a time.Time value and the
// internal representation of a Date value correctly handle time zones other
// than UTC, especially in cases where the local date at a given time is
// different from the UTC date for that same time.
func TestZone(t *testing.T) {
cases := []string{
"2015-07-29 15:12:34 +0000",
"2015-07-29 15:12:34 -0500",
"2015-07-29 15:12:34 +0500",
"2015-07-29 21:12:34 -0500",
"2015-07-29 21:12:34 -0500",
"2015-07-29 03:12:34 +0500",
"2015-07-29 03:12:34 +0500",
}
for _, c := range cases {
tIn, err := time.Parse("2006-01-02 15:04:05 -0700", c)
if err != nil {
t.Errorf("Zone(%v) cannot parse %v", c, c)
}
d := encode(tIn)
tOut := decode(d)
yIn, mIn, dIn := tIn.Date()
yOut, mOut, dOut := tOut.Date()
if yIn != yOut {
t.Errorf("Zone(%v).y == %v, want %v", c, yOut, yIn)
}
if mIn != mOut {
t.Errorf("Zone(%v).m == %v, want %v", c, mOut, mIn)
}
if dIn != dOut {
t.Errorf("Zone(%v).d == %v, want %v", c, dOut, dIn)
}
}
}
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