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idx_test.go
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idx_test.go
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package idx
import (
"bytes"
"testing"
)
func TestNewReader(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x08, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x01, 0x02, 0x03, 0x04,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
if rd.Dimensions[0] != 1 || rd.Dimensions[1] != 2 || rd.Dimensions[2] != 2 {
t.Fatal("Got unexpect dimensions")
}
}
func TestNewReader_Error1(t *testing.T) {
_, err := NewReader(new(bytes.Buffer))
if err == nil {
t.Fatal("Expected error from nil io.Reader")
}
}
func TestNewReader_Error2(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x08, 0x03,
})
_, err := NewReader(sample)
if err == nil {
t.Fatal("Expected error from buffer: too short")
}
}
func TestRead(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x08, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x01, 0x02, 0x03, 0x04,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
el := make([]byte, 4)
_, err = rd.Read(el)
if err != nil {
t.Fatal(err)
}
if el[0] != 1 || el[1] != 2 || el[2] != 3 || el[3] != 4 {
t.Fatal("Got unexpected results", el)
}
}
func TestReadUint8(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x08, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x01, 0x02, 0x03, 0x04,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
el := make([]uint8, 4)
err = rd.ReadUint8(el)
if err != nil {
t.Fatal(err)
}
if el[0] != 1 || el[1] != 2 || el[2] != 3 || el[3] != 4 {
t.Fatal("Got unexpected results", el)
}
}
func TestReadInt8(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x09, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x01, 0x02, 0x03, 0x04,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
el := make([]int8, 4)
err = rd.ReadInt8(el)
if err != nil {
t.Fatal(err)
}
if el[0] != 1 || el[1] != 2 || el[2] != 3 || el[3] != 4 {
t.Fatal("Got unexpected results", el)
}
}
func TestReadInt16(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x0B, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x00, 0x01, 0x00, 0x02,
0x00, 0x03, 0x00, 0x04,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
el := make([]int16, 4)
err = rd.ReadInt16(el)
if err != nil {
t.Fatal(err)
}
if el[0] != 1 || el[1] != 2 || el[2] != 3 || el[3] != 4 {
t.Fatal("Got unexpected results", el)
}
}
func TestReadInt32(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x0C, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x04,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
el := make([]int32, 4)
err = rd.ReadInt32(el)
if err != nil {
t.Fatal(err)
}
if el[0] != 1 || el[1] != 2 || el[2] != 3 || el[3] != 4 {
t.Fatal("Got unexpected results", el)
}
}
func TestReadFloat32(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x0D, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x3f, 0x80, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00,
0x40, 0x40, 0x00, 0x00,
0x40, 0x80, 0x00, 0x00,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
el := make([]float32, 4)
err = rd.ReadFloat32(el)
if err != nil {
t.Fatal(err)
}
if el[0] != 1 || el[1] != 2 || el[2] != 3 || el[3] != 4 {
t.Fatal("Got unexpected results", el)
}
}
func TestReadFloat64(t *testing.T) {
sample := bytes.NewBuffer([]byte{
0x00, 0x00, 0x0E, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
0x3f, 0xf0, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x10, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
})
rd, err := NewReader(sample)
if err != nil {
t.Fatal(err)
}
el := make([]float64, 4)
err = rd.ReadFloat64(el)
if err != nil {
t.Fatal(err)
}
if el[0] != 1 || el[1] != 2 || el[2] != 3 || el[3] != 4 {
t.Fatal("Got unexpected results", el)
}
}
func TestNewWriter(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Uint8DataType, []int32{1, 2, 2})
if wr.header.DataType != Uint8DataType {
t.Fatal("Got unexpect data type")
}
if wr.header.NumDimensions != 3 {
t.Fatal("Got unexpect dimensions")
}
}
func TestWrite(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Uint8DataType, []int32{1, 2, 2})
sample := []byte{0x01, 0x02, 0x03, 0x04}
n, err := wr.Write(sample)
if err != nil {
t.Fatal(err)
}
if n != 4 {
t.Fatal("Wrote incorrect number of bytes", n)
}
b := buf.Bytes()
header := b[0:16]
expectedHeader := []byte{
0x00, 0x00, 0x08, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
}
if !bytes.Equal(header, expectedHeader) {
t.Fatal("Wrote unexpected header", header, expectedHeader)
}
el := b[16:]
if !bytes.Equal(el, sample) {
t.Fatal("Wrote unexpected elements", el)
}
}
func TestWriteUint8(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Uint8DataType, []int32{1, 2, 2})
sample := []uint8{1, 2, 3, 4}
err := wr.WriteUint8(sample)
if err != nil {
t.Fatal(err)
}
b := buf.Bytes()
header := b[0:16]
expectedHeader := []byte{
0x00, 0x00, 0x08, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
}
if !bytes.Equal(header, expectedHeader) {
t.Fatal("Wrote unexpected header", header, expectedHeader)
}
el := b[16:]
if !bytes.Equal(el, sample) {
t.Fatal("Wrote unexpected elements", el)
}
}
func TestWriteInt8(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Int8DataType, []int32{1, 2, 2})
sample := []int8{1, 2, 3, 4}
err := wr.WriteInt8(sample)
if err != nil {
t.Fatal(err)
}
b := buf.Bytes()
header := b[0:16]
expectedHeader := []byte{
0x00, 0x00, 0x09, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
}
if !bytes.Equal(header, expectedHeader) {
t.Fatal("Wrote unexpected header", header, expectedHeader)
}
el := b[16:]
if !bytes.Equal(el, []byte{0x01, 0x02, 0x03, 0x04}) {
t.Fatal("Wrote unexpected elements", el)
}
}
func TestWriteInt16(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Int16DataType, []int32{1, 2, 2})
sample := []int16{1, 2, 3, 4}
err := wr.WriteInt16(sample)
if err != nil {
t.Fatal(err)
}
b := buf.Bytes()
header := b[0:16]
expectedHeader := []byte{
0x00, 0x00, 0x0B, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
}
if !bytes.Equal(header, expectedHeader) {
t.Fatal("Wrote unexpected header", header, expectedHeader)
}
el := b[16:]
if !bytes.Equal(el, []byte{
0x00, 0x01,
0x00, 0x02,
0x00, 0x03,
0x00, 0x04,
}) {
t.Fatal("Wrote unexpected elements", el)
}
}
func TestWriteInt32(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Int32DataType, []int32{1, 2, 2})
sample := []int32{1, 2, 3, 4}
err := wr.WriteInt32(sample)
if err != nil {
t.Fatal(err)
}
b := buf.Bytes()
header := b[0:16]
expectedHeader := []byte{
0x00, 0x00, 0x0C, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
}
if !bytes.Equal(header, expectedHeader) {
t.Fatal("Wrote unexpected header", header, expectedHeader)
}
el := b[16:]
if !bytes.Equal(el, []byte{
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x03,
0x00, 0x00, 0x00, 0x04,
}) {
t.Fatal("Wrote unexpected elements", el)
}
}
func TestWriteFloat32(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Float32DataType, []int32{1, 2, 2})
sample := []float32{1, 2, 3, 4}
err := wr.WriteFloat32(sample)
if err != nil {
t.Fatal(err)
}
b := buf.Bytes()
header := b[0:16]
expectedHeader := []byte{
0x00, 0x00, 0x0D, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
}
if !bytes.Equal(header, expectedHeader) {
t.Fatal("Wrote unexpected header", header, expectedHeader)
}
el := b[16:]
if !bytes.Equal(el, []byte{
0x3f, 0x80, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00,
0x40, 0x40, 0x00, 0x00,
0x40, 0x80, 0x00, 0x00,
}) {
t.Fatal("Wrote unexpected elements", el)
}
}
func TestWriteFloat64(t *testing.T) {
buf := new(bytes.Buffer)
wr := NewWriter(buf, Float64DataType, []int32{1, 2, 2})
sample := []float64{1, 2, 3, 4}
err := wr.WriteFloat64(sample)
if err != nil {
t.Fatal(err)
}
b := buf.Bytes()
header := b[0:16]
expectedHeader := []byte{
0x00, 0x00, 0x0E, 0x03,
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x02,
0x00, 0x00, 0x00, 0x02,
}
if !bytes.Equal(header, expectedHeader) {
t.Fatal("Wrote unexpected header", header, expectedHeader)
}
el := b[16:]
if !bytes.Equal(el, []byte{
0x3f, 0xf0, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x40, 0x10, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
}) {
t.Fatal("Wrote unexpected elements", el)
}
}