github.com/keygen-sh/go-update@v1.0.0/internal/binarydist/patch_test.go (about)

     1  package binarydist
     2  
     3  import (
     4  	"io/ioutil"
     5  	"os"
     6  	"os/exec"
     7  	"testing"
     8  )
     9  
    10  func TestPatch(t *testing.T) {
    11  	mustWriteRandFile("test.old", 1e3)
    12  	mustWriteRandFile("test.new", 1e3)
    13  
    14  	got, err := ioutil.TempFile("/tmp", "bspatch.")
    15  	if err != nil {
    16  		panic(err)
    17  	}
    18  	os.Remove(got.Name())
    19  
    20  	err = exec.Command("bsdiff", "test.old", "test.new", "test.patch").Run()
    21  	if err != nil {
    22  		panic(err)
    23  	}
    24  
    25  	err = Patch(mustOpen("test.old"), got, mustOpen("test.patch"))
    26  	if err != nil {
    27  		t.Fatal("err", err)
    28  	}
    29  
    30  	ref, err := got.Seek(0, 2)
    31  	if err != nil {
    32  		panic(err)
    33  	}
    34  
    35  	t.Logf("got %d bytes", ref)
    36  	if n := fileCmp(got, mustOpen("test.new")); n > -1 {
    37  		t.Fatalf("produced different output at pos %d", n)
    38  	}
    39  }
    40  
    41  func TestPatchHk(t *testing.T) {
    42  	got, err := ioutil.TempFile("/tmp", "bspatch.")
    43  	if err != nil {
    44  		panic(err)
    45  	}
    46  	os.Remove(got.Name())
    47  
    48  	err = Patch(mustOpen("testdata/sample.old"), got, mustOpen("testdata/sample.patch"))
    49  	if err != nil {
    50  		t.Fatal("err", err)
    51  	}
    52  
    53  	ref, err := got.Seek(0, 2)
    54  	if err != nil {
    55  		panic(err)
    56  	}
    57  
    58  	t.Logf("got %d bytes", ref)
    59  	if n := fileCmp(got, mustOpen("testdata/sample.new")); n > -1 {
    60  		t.Fatalf("produced different output at pos %d", n)
    61  	}
    62  }