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package zbase32_test
import (
"bytes"
"flag"
"fmt"
"os"
"os/exec"
"strconv"
"strings"
"testing"
"testing/quick"
"github.com/tv42/zbase32"
)
var python = flag.Bool("python", false, "run comparison tests against Python zbase32 library")
func calcBits(orig []byte, partial uint) int {
bits := 8 * uint(len(orig))
partial &= 7
if bits > partial {
bits -= partial
mask := ^(byte(1<<partial) - 1)
orig[len(orig)-1] &= mask
}
return int(bits)
}
func TestQuickRoundtripBits(t *testing.T) {
fn := func(orig []byte, partial uint) bool {
bits := calcBits(orig, partial)
encoded := zbase32.EncodeBitsToString(orig, bits)
decoded, err := zbase32.DecodeBitsString(encoded, bits)
if err != nil {
t.Logf("orig=\t%x", orig)
t.Logf("bits=\t%d", bits)
t.Logf("enc=\t%q", encoded)
t.Fatalf("encode-decode roundtrip gave error: %v", err)
}
if !bytes.Equal(orig, decoded) {
t.Logf("orig=\t%x", orig)
t.Logf("dec=\t%x", decoded)
t.Logf("bits=\t%d", bits)
t.Logf("enc=\t%q", encoded)
return false
}
return true
}
if err := quick.Check(fn, nil); err != nil {
t.Fatal(err)
}
}
func TestQuickRoundtripBytes(t *testing.T) {
fn := func(orig []byte) bool {
encoded := zbase32.EncodeToString(orig)
decoded, err := zbase32.DecodeString(encoded)
if err != nil {
t.Logf("orig=\t%x", orig)
t.Logf("enc=\t%q", encoded)
t.Fatalf("encode-decode roundtrip gave error: %v", err)
}
if !bytes.Equal(orig, decoded) {
t.Logf("orig=\t%x", orig)
t.Logf("dec=\t%x", decoded)
t.Logf("enc=\t%q", encoded)
return false
}
return true
}
if err := quick.Check(fn, nil); err != nil {
t.Fatal(err)
}
}
func TestQuickPythonEncodeBits(t *testing.T) {
if !*python {
t.Skip("Skipping, use -python to enable")
}
us := func(orig []byte, partial uint) (string, error) {
bits := calcBits(orig, partial)
encoded := zbase32.EncodeBitsToString(orig, bits)
return encoded, nil
}
them := func(orig []byte, partial uint) (string, error) {
// the python library raises IndexError on zero-length input
if len(orig) == 0 {
return "", nil
}
bits := calcBits(orig, partial)
cmd := exec.Command("python", "-c", `
import sys, zbase32
orig = sys.stdin.read()
bits = int(sys.argv[1])
sys.stdout.write(zbase32.b2a_l(orig, bits))
`,
strconv.Itoa(bits),
)
cmd.Stdin = bytes.NewReader(orig)
cmd.Stderr = os.Stderr
output, err := cmd.Output()
if err != nil {
return "", fmt.Errorf("cannot run python: %v", err)
}
return string(output), nil
}
if err := quick.CheckEqual(us, them, nil); err != nil {
t.Fatal(err)
}
}
func TestQuickPythonDecodeBits(t *testing.T) {
if !*python {
t.Skip("Skipping, use -python to enable")
}
us := func(orig []byte, partial uint) ([]byte, error) {
bits := calcBits(orig, partial)
encoded := zbase32.EncodeBitsToString(orig, bits)
return zbase32.DecodeBitsString(encoded, bits)
}
them := func(orig []byte, partial uint) ([]byte, error) {
// the python library raises IndexError on zero-length input
if len(orig) == 0 {
return []byte{}, nil
}
bits := calcBits(orig, partial)
encoded := zbase32.EncodeBitsToString(orig, bits)
cmd := exec.Command("python", "-c", `
import sys, zbase32
enc = sys.stdin.read()
bits = int(sys.argv[1])
sys.stdout.write(zbase32.a2b_l(enc, bits))
`,
strconv.Itoa(bits),
)
cmd.Stdin = strings.NewReader(encoded)
cmd.Stderr = os.Stderr
output, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("cannot run python: %v", err)
}
return output, nil
}
if err := quick.CheckEqual(us, them, nil); err != nil {
t.Fatal(err)
}
}
func TestQuickPythonEncodeBytes(t *testing.T) {
if !*python {
t.Skip("Skipping, use -python to enable")
}
us := func(orig []byte) (string, error) {
encoded := zbase32.EncodeToString(orig)
return encoded, nil
}
them := func(orig []byte) (string, error) {
// the python library raises IndexError on zero-length input
if len(orig) == 0 {
return "", nil
}
cmd := exec.Command("python", "-c", `
import sys, zbase32
orig = sys.stdin.read()
sys.stdout.write(zbase32.b2a(orig))
`)
cmd.Stdin = bytes.NewReader(orig)
cmd.Stderr = os.Stderr
output, err := cmd.Output()
if err != nil {
return "", fmt.Errorf("cannot run python: %v", err)
}
return string(output), nil
}
if err := quick.CheckEqual(us, them, nil); err != nil {
t.Fatal(err)
}
}
func TestQuickPythonDecodeBytes(t *testing.T) {
if !*python {
t.Skip("Skipping, use -python to enable")
}
us := func(orig []byte) ([]byte, error) {
encoded := zbase32.EncodeToString(orig)
return zbase32.DecodeString(encoded)
}
them := func(orig []byte) ([]byte, error) {
// the python library raises IndexError on zero-length input
if len(orig) == 0 {
return []byte{}, nil
}
encoded := zbase32.EncodeToString(orig)
cmd := exec.Command("python", "-c", `
import sys, zbase32
enc = sys.stdin.read()
sys.stdout.write(zbase32.a2b(enc))
`)
cmd.Stdin = strings.NewReader(encoded)
cmd.Stderr = os.Stderr
output, err := cmd.Output()
if err != nil {
return nil, fmt.Errorf("cannot run python: %v", err)
}
return output, nil
}
if err := quick.CheckEqual(us, them, nil); err != nil {
t.Fatal(err)
}
}
|
