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}, // 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), "0B"}, {"bytes(1)", bbyte(1), "1B"}, {"bytes(803)", bbyte(803), "803B"}, {"bytes(999)", bbyte(999), "999B"}, {"bytes(1024)", bbyte(1024), "1.0KB"}, {"bytes(1MB - 1)", bbyte(MByte - Byte), "1000KB"}, {"bytes(1MB)", bbyte(1024 * 1024), "1.0MB"}, {"bytes(1GB - 1K)", bbyte(GByte - KByte), "1000MB"}, {"bytes(1GB)", bbyte(GByte), "1.0GB"}, {"bytes(1TB - 1M)", bbyte(TByte - MByte), "1000GB"}, {"bytes(1TB)", bbyte(TByte), "1.0TB"}, {"bytes(1PB - 1T)", bbyte(PByte - TByte), "999TB"}, {"bytes(1PB)", bbyte(PByte), "1.0PB"}, {"bytes(1PB - 1T)", bbyte(EByte - PByte), "999PB"}, {"bytes(1EB)", bbyte(EByte), "1.0EB"}, // Overflows. // {"bytes(1EB - 1P)", Bytes((KByte*EByte)-PByte), "1023EB"}, {"bytes(0)", bibyte(0), "0B"}, {"bytes(1)", bibyte(1), "1B"}, {"bytes(803)", bibyte(803), "803B"}, {"bytes(1023)", bibyte(1023), "1023B"}, {"bytes(1024)", bibyte(1024), "1.0KiB"}, {"bytes(1MB - 1)", bibyte(MiByte - IByte), "1024KiB"}, {"bytes(1MB)", bibyte(1024 * 1024), "1.0MiB"}, {"bytes(1GB - 1K)", bibyte(GiByte - KiByte), "1024MiB"}, {"bytes(1GB)", bibyte(GiByte), "1.0GiB"}, {"bytes(1TB - 1M)", bibyte(TiByte - MiByte), "1024GiB"}, {"bytes(1TB)", bibyte(TiByte), "1.0TiB"}, {"bytes(1PB - 1T)", bibyte(PiByte - TiByte), "1023TiB"}, {"bytes(1PB)", bibyte(PiByte), "1.0PiB"}, {"bytes(1PB - 1T)", bibyte(EiByte - PiByte), "1023PiB"}, {"bytes(1EiB)", bibyte(EiByte), "1.0EiB"}, // Overflows. // {"bytes(1EB - 1P)", bibyte((KIByte*EIByte)-PiByte), "1023EB"}, {"bytes(5.5GiB)", bibyte(5.5 * GiByte), "5.5GiB"}, {"bytes(5.5GB)", bbyte(5.5 * GByte), "5.5GB"}, }.validate(t) } func TestVeryBigBytes(t *testing.T) { b, _ := (&big.Int{}).SetString("15347691069326346944512", 10) s := BigBytes(b) if s != "15ZB" { t.Errorf("Expected 15ZB, got %v", s) } s = BigIBytes(b) if s != "13ZiB" { t.Errorf("Expected 13ZiB, got %v", s) } b, _ = (&big.Int{}).SetString("15716035654990179271180288", 10) s = BigBytes(b) if s != "16YB" { t.Errorf("Expected 16YB, got %v", s) } s = BigIBytes(b) if s != "13YiB" { t.Errorf("Expected 13YiB, got %v", s) } } func TestVeryVeryBigBytes(t *testing.T) { b, _ := (&big.Int{}).SetString("16093220510709943573688614912", 10) s := BigBytes(b) if s != "16093YB" { t.Errorf("Expected 16093YB, got %v", s) } s = BigIBytes(b) if s != "13312YiB" { t.Errorf("Expected 13312YiB, got %v", s) } } func TestParseVeryBig(t *testing.T) { tests := []struct { in string out string }{ {"16ZB", "16000000000000000000000"}, {"16ZiB", "18889465931478580854784"}, {"16.5ZB", "16500000000000000000000"}, {"16.5ZiB", "19479761741837286506496"}, {"16Z", "16000000000000000000000"}, {"16Zi", "18889465931478580854784"}, {"16.5Z", "16500000000000000000000"}, {"16.5Zi", "19479761741837286506496"}, {"16YB", "16000000000000000000000000"}, {"16YiB", "19342813113834066795298816"}, {"16.5YB", "16500000000000000000000000"}, {"16.5YiB", "19947276023641381382651904"}, {"16Y", "16000000000000000000000000"}, {"16Yi", "19342813113834066795298816"}, {"16.5Y", "16500000000000000000000000"}, {"16.5Yi", "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("16.5Z") } } func BenchmarkBigBytes(b *testing.B) { for i := 0; i < b.N; i++ { bibyte(16.5 * GByte) } }