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restic/vendor/github.com/dustin/go-humanize/bigbytes_test.go
2017-09-13 14:09:48 +02:00

220 lines
5.3 KiB
Go

package humanize
import (
"math/big"
"testing"
)
func TestBigByteParsing(t *testing.T) {
tests := []struct {
in string
exp uint64
}{
{"42", 42},
{"42MB", 42000000},
{"42MiB", 44040192},
{"42mb", 42000000},
{"42mib", 44040192},
{"42MIB", 44040192},
{"42 MB", 42000000},
{"42 MiB", 44040192},
{"42 mb", 42000000},
{"42 mib", 44040192},
{"42 MIB", 44040192},
{"42.5MB", 42500000},
{"42.5MiB", 44564480},
{"42.5 MB", 42500000},
{"42.5 MiB", 44564480},
// No need to say B
{"42M", 42000000},
{"42Mi", 44040192},
{"42m", 42000000},
{"42mi", 44040192},
{"42MI", 44040192},
{"42 M", 42000000},
{"42 Mi", 44040192},
{"42 m", 42000000},
{"42 mi", 44040192},
{"42 MI", 44040192},
{"42.5M", 42500000},
{"42.5Mi", 44564480},
{"42.5 M", 42500000},
{"42.5 Mi", 44564480},
{"1,005.03 MB", 1005030000},
// Large testing, breaks when too much larger than
// this.
{"12.5 EB", uint64(12.5 * float64(EByte))},
{"12.5 E", uint64(12.5 * float64(EByte))},
{"12.5 EiB", uint64(12.5 * float64(EiByte))},
}
for _, p := range tests {
got, err := ParseBigBytes(p.in)
if err != nil {
t.Errorf("Couldn't parse %v: %v", p.in, err)
} else {
if got.Uint64() != p.exp {
t.Errorf("Expected %v for %v, got %v",
p.exp, p.in, got)
}
}
}
}
func TestBigByteErrors(t *testing.T) {
got, err := ParseBigBytes("84 JB")
if err == nil {
t.Errorf("Expected error, got %v", got)
}
got, err = ParseBigBytes("")
if err == nil {
t.Errorf("Expected error parsing nothing")
}
}
func bbyte(in uint64) string {
return BigBytes((&big.Int{}).SetUint64(in))
}
func bibyte(in uint64) string {
return BigIBytes((&big.Int{}).SetUint64(in))
}
func TestBigBytes(t *testing.T) {
testList{
{"bytes(0)", bbyte(0), "0 B"},
{"bytes(1)", bbyte(1), "1 B"},
{"bytes(803)", bbyte(803), "803 B"},
{"bytes(999)", bbyte(999), "999 B"},
{"bytes(1024)", bbyte(1024), "1.0 kB"},
{"bytes(1MB - 1)", bbyte(MByte - Byte), "1000 kB"},
{"bytes(1MB)", bbyte(1024 * 1024), "1.0 MB"},
{"bytes(1GB - 1K)", bbyte(GByte - KByte), "1000 MB"},
{"bytes(1GB)", bbyte(GByte), "1.0 GB"},
{"bytes(1TB - 1M)", bbyte(TByte - MByte), "1000 GB"},
{"bytes(1TB)", bbyte(TByte), "1.0 TB"},
{"bytes(1PB - 1T)", bbyte(PByte - TByte), "999 TB"},
{"bytes(1PB)", bbyte(PByte), "1.0 PB"},
{"bytes(1PB - 1T)", bbyte(EByte - PByte), "999 PB"},
{"bytes(1EB)", bbyte(EByte), "1.0 EB"},
// Overflows.
// {"bytes(1EB - 1P)", Bytes((KByte*EByte)-PByte), "1023EB"},
{"bytes(0)", bibyte(0), "0 B"},
{"bytes(1)", bibyte(1), "1 B"},
{"bytes(803)", bibyte(803), "803 B"},
{"bytes(1023)", bibyte(1023), "1023 B"},
{"bytes(1024)", bibyte(1024), "1.0 KiB"},
{"bytes(1MB - 1)", bibyte(MiByte - IByte), "1024 KiB"},
{"bytes(1MB)", bibyte(1024 * 1024), "1.0 MiB"},
{"bytes(1GB - 1K)", bibyte(GiByte - KiByte), "1024 MiB"},
{"bytes(1GB)", bibyte(GiByte), "1.0 GiB"},
{"bytes(1TB - 1M)", bibyte(TiByte - MiByte), "1024 GiB"},
{"bytes(1TB)", bibyte(TiByte), "1.0 TiB"},
{"bytes(1PB - 1T)", bibyte(PiByte - TiByte), "1023 TiB"},
{"bytes(1PB)", bibyte(PiByte), "1.0 PiB"},
{"bytes(1PB - 1T)", bibyte(EiByte - PiByte), "1023 PiB"},
{"bytes(1EiB)", bibyte(EiByte), "1.0 EiB"},
// Overflows.
// {"bytes(1EB - 1P)", bibyte((KIByte*EIByte)-PiByte), "1023EB"},
{"bytes(5.5GiB)", bibyte(5.5 * GiByte), "5.5 GiB"},
{"bytes(5.5GB)", bbyte(5.5 * GByte), "5.5 GB"},
}.validate(t)
}
func TestVeryBigBytes(t *testing.T) {
b, _ := (&big.Int{}).SetString("15347691069326346944512", 10)
s := BigBytes(b)
if s != "15 ZB" {
t.Errorf("Expected 15 ZB, got %v", s)
}
s = BigIBytes(b)
if s != "13 ZiB" {
t.Errorf("Expected 13 ZiB, got %v", s)
}
b, _ = (&big.Int{}).SetString("15716035654990179271180288", 10)
s = BigBytes(b)
if s != "16 YB" {
t.Errorf("Expected 16 YB, got %v", s)
}
s = BigIBytes(b)
if s != "13 YiB" {
t.Errorf("Expected 13 YiB, got %v", s)
}
}
func TestVeryVeryBigBytes(t *testing.T) {
b, _ := (&big.Int{}).SetString("16093220510709943573688614912", 10)
s := BigBytes(b)
if s != "16093 YB" {
t.Errorf("Expected 16093 YB, got %v", s)
}
s = BigIBytes(b)
if s != "13312 YiB" {
t.Errorf("Expected 13312 YiB, got %v", s)
}
}
func TestParseVeryBig(t *testing.T) {
tests := []struct {
in string
out string
}{
{"16 ZB", "16000000000000000000000"},
{"16 ZiB", "18889465931478580854784"},
{"16.5 ZB", "16500000000000000000000"},
{"16.5 ZiB", "19479761741837286506496"},
{"16 Z", "16000000000000000000000"},
{"16 Zi", "18889465931478580854784"},
{"16.5 Z", "16500000000000000000000"},
{"16.5 Zi", "19479761741837286506496"},
{"16 YB", "16000000000000000000000000"},
{"16 YiB", "19342813113834066795298816"},
{"16.5 YB", "16500000000000000000000000"},
{"16.5 YiB", "19947276023641381382651904"},
{"16 Y", "16000000000000000000000000"},
{"16 Yi", "19342813113834066795298816"},
{"16.5 Y", "16500000000000000000000000"},
{"16.5 Yi", "19947276023641381382651904"},
}
for _, test := range tests {
x, err := ParseBigBytes(test.in)
if err != nil {
t.Errorf("Error parsing %q: %v", test.in, err)
continue
}
if x.String() != test.out {
t.Errorf("Expected %q for %q, got %v", test.out, test.in, x)
}
}
}
func BenchmarkParseBigBytes(b *testing.B) {
for i := 0; i < b.N; i++ {
ParseBigBytes("16.5 Z")
}
}
func BenchmarkBigBytes(b *testing.B) {
for i := 0; i < b.N; i++ {
bibyte(16.5 * GByte)
}
}