mirror of
https://github.com/autc04/Retro68.git
synced 2024-09-10 03:54:48 +00:00
128 lines
3.0 KiB
Go
128 lines
3.0 KiB
Go
// Copyright 2009 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 strconv_test
|
|
|
|
import (
|
|
. "strconv"
|
|
"testing"
|
|
)
|
|
|
|
type shiftTest struct {
|
|
i uint64
|
|
shift int
|
|
out string
|
|
}
|
|
|
|
var shifttests = []shiftTest{
|
|
{0, -100, "0"},
|
|
{0, 100, "0"},
|
|
{1, 100, "1267650600228229401496703205376"},
|
|
{1, -100,
|
|
"0.00000000000000000000000000000078886090522101180541" +
|
|
"17285652827862296732064351090230047702789306640625",
|
|
},
|
|
{12345678, 8, "3160493568"},
|
|
{12345678, -8, "48225.3046875"},
|
|
{195312, 9, "99999744"},
|
|
{1953125, 9, "1000000000"},
|
|
}
|
|
|
|
func TestDecimalShift(t *testing.T) {
|
|
for i := 0; i < len(shifttests); i++ {
|
|
test := &shifttests[i]
|
|
d := NewDecimal(test.i)
|
|
d.Shift(test.shift)
|
|
s := d.String()
|
|
if s != test.out {
|
|
t.Errorf("Decimal %v << %v = %v, want %v",
|
|
test.i, test.shift, s, test.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
type roundTest struct {
|
|
i uint64
|
|
nd int
|
|
down, round, up string
|
|
int uint64
|
|
}
|
|
|
|
var roundtests = []roundTest{
|
|
{0, 4, "0", "0", "0", 0},
|
|
{12344999, 4, "12340000", "12340000", "12350000", 12340000},
|
|
{12345000, 4, "12340000", "12340000", "12350000", 12340000},
|
|
{12345001, 4, "12340000", "12350000", "12350000", 12350000},
|
|
{23454999, 4, "23450000", "23450000", "23460000", 23450000},
|
|
{23455000, 4, "23450000", "23460000", "23460000", 23460000},
|
|
{23455001, 4, "23450000", "23460000", "23460000", 23460000},
|
|
|
|
{99994999, 4, "99990000", "99990000", "100000000", 99990000},
|
|
{99995000, 4, "99990000", "100000000", "100000000", 100000000},
|
|
{99999999, 4, "99990000", "100000000", "100000000", 100000000},
|
|
|
|
{12994999, 4, "12990000", "12990000", "13000000", 12990000},
|
|
{12995000, 4, "12990000", "13000000", "13000000", 13000000},
|
|
{12999999, 4, "12990000", "13000000", "13000000", 13000000},
|
|
}
|
|
|
|
func TestDecimalRound(t *testing.T) {
|
|
for i := 0; i < len(roundtests); i++ {
|
|
test := &roundtests[i]
|
|
d := NewDecimal(test.i)
|
|
d.RoundDown(test.nd)
|
|
s := d.String()
|
|
if s != test.down {
|
|
t.Errorf("Decimal %v RoundDown %d = %v, want %v",
|
|
test.i, test.nd, s, test.down)
|
|
}
|
|
d = NewDecimal(test.i)
|
|
d.Round(test.nd)
|
|
s = d.String()
|
|
if s != test.round {
|
|
t.Errorf("Decimal %v Round %d = %v, want %v",
|
|
test.i, test.nd, s, test.down)
|
|
}
|
|
d = NewDecimal(test.i)
|
|
d.RoundUp(test.nd)
|
|
s = d.String()
|
|
if s != test.up {
|
|
t.Errorf("Decimal %v RoundUp %d = %v, want %v",
|
|
test.i, test.nd, s, test.up)
|
|
}
|
|
}
|
|
}
|
|
|
|
type roundIntTest struct {
|
|
i uint64
|
|
shift int
|
|
int uint64
|
|
}
|
|
|
|
var roundinttests = []roundIntTest{
|
|
{0, 100, 0},
|
|
{512, -8, 2},
|
|
{513, -8, 2},
|
|
{640, -8, 2},
|
|
{641, -8, 3},
|
|
{384, -8, 2},
|
|
{385, -8, 2},
|
|
{383, -8, 1},
|
|
{1, 100, 1<<64 - 1},
|
|
{1000, 0, 1000},
|
|
}
|
|
|
|
func TestDecimalRoundedInteger(t *testing.T) {
|
|
for i := 0; i < len(roundinttests); i++ {
|
|
test := roundinttests[i]
|
|
d := NewDecimal(test.i)
|
|
d.Shift(test.shift)
|
|
int := d.RoundedInteger()
|
|
if int != test.int {
|
|
t.Errorf("Decimal %v >> %v RoundedInteger = %v, want %v",
|
|
test.i, test.shift, int, test.int)
|
|
}
|
|
}
|
|
}
|