func BenchmarkDecompressor(b *testing.B) {
r := zdateReader(100, true)
buf, err := ioutil.ReadAll(r)
if err != nil {
b.Fatalf("%v", err)
}
b.SetBytes(int64(len(buf)))
// determine buffer size to read all the data
// in a single call
r.Seek(0, 0)
d := capn.NewDecompressor(r)
buf, err = ioutil.ReadAll(d)
if err != nil {
b.Fatalf("%v", err)
}
b.ResetTimer()
for i := 0; i < b.N || benchForever; i++ {
r.Seek(0, 0)
n, err := d.Read(buf)
if err != nil {
b.Fatalf("%v", err)
}
if n != len(buf) {
b.Fatal("short read")
}
}
}
func TestDecompressorVerbosely(t *testing.T) {
cv.Convey("Testing the go-capnproto Decompressor.Read() function:", t, func() {
for _, test := range compressionTests {
fmt.Printf("\n\nGiven compressed text '%#v'\n", test.compressed)
// fmt.Printf(" test.original = %#v\n test.compressed = %#v\n", test.original, test.compressed)
for readSize := 1; readSize <= 8+2*len(test.original); readSize++ {
fmt.Printf("\n When we use go-capnproto NewDecompressor, with readSize: %d\n Then we should get the original text back.", readSize)
r := bytes.NewReader(test.compressed)
d := capn.NewDecompressor(r)
buf := make([]byte, readSize)
var actual []byte
for {
n, err := d.Read(buf)
actual = append(actual, buf[:n]...)
if err != nil {
if err == io.EOF {
break
}
t.Fatalf("Read: %v", err)
}
}
cv.So(len(actual), cv.ShouldResemble, len(test.original))
if len(test.original) > 0 {
cv.So(actual, cv.ShouldResemble, test.original)
}
} // end readSize loop
}
fmt.Printf("\n\n")
})
}
func TestDecodeOnKnownWellPackedData(t *testing.T) {
// length 17
byteSliceIn := []byte{0x10, 0x5, 0x50, 0x2, 0x1, 0x1, 0x25, 0x0, 0x0, 0x11, 0x1, 0xc, 0xf, 0xd4, 0x7, 0xc, 0x7}
fmt.Printf("len of byteSliceIn is %d\n", len(byteSliceIn))
// annotated: byteSliceIn := []byte{tag:0x10, 0x5, tag:0x50, 0x2, 0x1, tag:0x1, 0x25, tag:0x0, 0x0, tag:0x11, 0x1, 0xc, tag:0xf, 0xd4, 0x7, 0xc, 0x7}
// length 48
expectedOut := []byte{0x0, 0x0, 0x0, 0x0, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0x1, 0x0, 0x25, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0xd4, 0x7, 0xc, 0x7, 0x0, 0x0, 0x0, 0x0}
r := bytes.NewReader(byteSliceIn)
actual, err := ioutil.ReadAll(capn.NewDecompressor(r))
if err != nil {
panic(err)
}
cv.Convey("Given a known-to-be-correctly packed 17-byte long sequence for a ZdateVector holding a single Zdate", t, func() {
cv.Convey("When we use go-capnproto NewDecompressor", func() {
cv.Convey("Then we should get the same unpacked bytes as capnp provides", func() {
cv.So(len(actual), cv.ShouldResemble, len(expectedOut))
cv.So(actual, cv.ShouldResemble, expectedOut)
})
})
})
}
func TestDecompressorUNPACKZdate2(t *testing.T) {
const n = 2
un := zdateReader(n, false)
expected, err := ioutil.ReadAll(un)
fmt.Printf("expected: '%#v' of len(%d)\n", expected, len(expected))
// prints:
// expected: []byte{
// 0x0, 0x0, 0x0, 0x0, 0x7, 0x0, 0x0, 0x0,
// 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, 0x1, 0x0,
// 0x25, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
// 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
// 0x1, 0x0, 0x0, 0x0, 0x14, 0x0, 0x0, 0x0,
// 0xd4, 0x7, 0xc, 0x7, 0xd5, 0x7, 0xc, 0x7,
// 0xd4, 0x7, 0xc, 0x7, 0x0, 0x0, 0x0, 0x0,
// 0xd5, 0x7, 0xc, 0x7, 0x0, 0x0, 0x0, 0x0} of len(64)
if err != nil {
t.Fatalf("ReadAll: %v", err)
}
//r = zdateReader(n, true)
_, slicePacked := zdateFilledSegment(n, true)
fmt.Printf("slicePacked = %#v\n", slicePacked)
// prints slicePacked = []byte{
// tag0x10, 0x7, tag:0x50, 0x2, 0x1, tag0x1, 0x25, tag0x0,
// 0x0, tag0x11, 0x1, 0x14, tag0xff, 0xd4, 0x7, 0xc,
// 0x7, 0xd5, 0x7, 0xc, 0x7, N:0x2, 0xd4, 0x7,
// 0xc, 0x7, 0x0, 0x0, 0x0, 0x0, 0xd5, 0x7,
// 0xc, 0x7, 0x0, 0x0, 0x0, 0x0}
pa := bytes.NewReader(slicePacked)
actual, err := ioutil.ReadAll(capn.NewDecompressor(pa))
if err != nil {
t.Fatalf("ReadAll: %v", err)
}
cv.Convey("Given the []byte slice from a capnp conversion from packed to unpacked form of a two Zdate vector", t, func() {
cv.Convey("When we use go-capnproto NewDecompressor", func() {
cv.Convey("Then we should get the same unpacked bytes as capnp provides", func() {
cv.So(len(actual), cv.ShouldResemble, len(expected))
cv.So(actual, cv.ShouldResemble, expected)
})
})
})
}
func TestDecompressorZdate1(t *testing.T) {
const n = 1
r := zdateReader(n, false)
expected, err := ioutil.ReadAll(r)
if err != nil {
t.Fatalf("ReadAll: %v", err)
}
r = zdateReader(n, true)
actual, err := ioutil.ReadAll(capn.NewDecompressor(r))
if err != nil {
t.Fatalf("ReadAll: %v", err)
}
if !bytes.Equal(expected, actual) {
fmt.Printf("expected to get: '%s'\n actually observed instead: '%s'\n", expected, actual)
t.Fatal("decompressor failed")
}
}
func TestDecompressor(t *testing.T) {
errCount := 0
for i, test := range compressionTests {
for readSize := 1; readSize <= 8+2*len(test.original); readSize++ {
r := bytes.NewReader(test.compressed)
d := capn.NewDecompressor(r)
buf := make([]byte, readSize)
var actual []byte
for {
n, err := d.Read(buf)
actual = append(actual, buf[:n]...)
if err != nil {
if err == io.EOF {
break
}
t.Fatalf("Read: %v", err)
}
}
if len(test.original) != len(actual) {
errCount++
t.Errorf("test:%d readSize:%d expected %d bytes, got %d",
i, readSize, len(test.original), len(actual))
continue
}
if !bytes.Equal(test.original, actual) {
errCount++
t.Errorf("test:%d readSize:%d: bytes not equal", i, readSize)
}
}
}
if errCount == 0 {
fmt.Printf("TestDecompressor() passed. (0 errors).\n")
}
}