bsdiff_test.go

// SPDX-License-Identifier: MIT
// SPDX-FileCopyrightText: 2019 Gabriel Ochsenhofer
// SPDX-FileCopyrightText: 2025 TotallyGamerJet

package bsdiff

import (
	"bytes"
	"testing"
)

func TestDiff(t *testing.T) {
	oldbs := []byte{0xFF, 0xFA, 0xB7, 0xDD}
	newbs := []byte{0xFF, 0xFA, 0x90, 0xB7, 0xDD, 0xFE}
	var diffbs []byte
	var err error
	if diffbs, err = Diff(oldbs, newbs); err != nil {
		t.Fatal(err)
	}
	z := []byte{
		0x42, 0x53, 0x44, 0x49, 0x46, 0x46, 0x34, 0x30, 0x2D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		0x25, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		0x42, 0x5A, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26, 0x53, 0x59, 0xC9, 0x9D, 0x1D, 0x33, 0x00, 0x00,
		0x06, 0xC0, 0x40, 0x5C, 0x00, 0x40, 0x00, 0x20, 0x00, 0x21, 0x8C, 0xA0, 0x60, 0x6C, 0xE2, 0xC8,
		0xF1, 0x47, 0xC5, 0xDC, 0x91, 0x4E, 0x14, 0x24, 0x32, 0x67, 0x47, 0x4C, 0xC0, 0x42, 0x5A, 0x68,
		0x39, 0x31, 0x41, 0x59, 0x26, 0x53, 0x59, 0xFF, 0x48, 0x9B, 0x82, 0x00, 0x00, 0x00, 0xC0, 0x00,
		0x40, 0x00, 0x20, 0x00, 0x21, 0x18, 0x46, 0xC2, 0xEE, 0x48, 0xA7, 0x0A, 0x12, 0x1F, 0xE9, 0x13,
		0x70, 0x40, 0x42, 0x5A, 0x68, 0x39, 0x31, 0x41, 0x59, 0x26, 0x53, 0x59, 0xDD, 0x13, 0xBF, 0x5C,
		0x00, 0x00, 0x00, 0x00, 0x2A, 0xC0, 0x00, 0x00, 0x80, 0x00, 0x02, 0x00, 0x01, 0x20, 0x00, 0x22,
		0x1B, 0x03, 0x0C, 0x70, 0xC2, 0xEE, 0x48, 0xA7, 0x0A, 0x12, 0x1B, 0xA2, 0x77, 0xEB, 0x80,
	}
	if !bytes.Equal(diffbs[:len(z)], z) {
		t.Fatal(diffbs[:len(z)], "!=", z)
	}
}