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gosamplerate_test.go
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gosamplerate_test.go
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package gosamplerate
import (
"reflect"
"strings"
"testing"
)
func TestGetConverterName(t *testing.T) {
name, err := GetName(SRC_LINEAR)
if err != nil {
t.Fatal(err)
}
if name != "Linear Interpolator" {
t.Fatal("Unexpected string")
}
}
func TestGetConverterNameError(t *testing.T) {
_, err := GetName(5)
if err == nil {
t.Fatal("expected Error")
}
if err.Error() != "unknown samplerate converter" {
t.Fatal("unexpected string")
}
}
func TestGetConverterDescription(t *testing.T) {
desc, err := GetDescription(SRC_LINEAR)
if err != nil {
t.Fatal(err)
}
if desc != "Linear interpolator, very fast, poor quality." {
t.Fatal("Unexpected string")
}
}
func TestGetConverterDescriptionError(t *testing.T) {
_, err := GetDescription(5)
if err == nil {
t.Fatal("expected Error")
}
if err.Error() != "unknown samplerate converter" {
t.Fatal("unexpected string")
}
}
func TestGetVersion(t *testing.T) {
version := GetVersion()
if !strings.Contains(version, "libsamplerate-") {
t.Fatal("Unexpected string")
}
}
func TestInitAndDestroy(t *testing.T) {
channels := 2
src, err := New(SRC_SINC_FASTEST, channels, 100)
if err != nil {
t.Fatal(err)
}
chs, err := src.GetChannels()
if err != nil {
t.Fatal(err)
}
if chs != channels {
t.Fatal("unexpected amount of channels")
}
err = src.Reset()
if err != nil {
t.Fatal(err)
}
err = Delete(src)
if err != nil {
t.Fatal(err)
}
}
func TestInvalidSrcObject(t *testing.T) {
_, err := New(5, 2, 100)
if err == nil {
t.Fatal("expected Error")
}
if err.Error() != "Could not initialize samplerate converter object" {
t.Log("unexpected Error string")
}
}
func TestSimple(t *testing.T) {
input := []float32{0.1, -0.5, 0.3, 0.4, 0.1}
expectedOutput := []float32{0.1, 0.1, -0.10000001, -0.5, 0.033333343, 0.33333334, 0.4, 0.2}
output, err := Simple(input, 1.5, 1, SRC_LINEAR)
if err != nil {
t.Fatal(err)
}
if !closeEnough(output, expectedOutput) {
t.Log("input", input)
t.Log("output", output)
t.Log("expectedOutput", expectedOutput)
t.Fatal("unexpected output")
}
}
func TestSimpleLessThanOne(t *testing.T) {
var input []float32
for i := 0; i < 10; i++ {
input = append(input, 0.1, -0.5, 0.3, 0.4, 0.1)
}
expectedOutput := []float32{0.1, -0.5, 0.4, 0.1, 0.3, 0.1, -0.5, 0.4, 0.1, 0.3, 0.1, -0.5, 0.4, 0.1, 0.3, 0.1, -0.5, 0.4, 0.1, 0.3, 0.1, -0.5, 0.4, 0.1, 0.3}
output, err := Simple(input, 0.5, 1, SRC_LINEAR)
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(output, expectedOutput) {
t.Log("input", input)
t.Log("output", output)
t.Fatal("unexpected output")
}
}
func TestSimpleError(t *testing.T) {
input := []float32{0.1, 0.9}
var invalidRatio float64 = -5.3
_, err := Simple(input, invalidRatio, 1, SRC_LINEAR)
if err == nil {
t.Fatal("expected Error")
}
if err.Error() != "Error code: 6; SRC ratio outside [1/256, 256] range." {
t.Log(err.Error())
t.Fatal("unexpected string")
}
}
func TestProcess(t *testing.T) {
src, err := New(SRC_LINEAR, 2, 100)
if err != nil {
t.Fatal(err)
}
input := []float32{0.1, -0.5, 0.2, -0.3}
output, err := src.Process(input, 2.0, false)
if err != nil {
t.Fatal(err)
}
expOutput := []float32{0.1, -0.5, 0.1, -0.5, 0.1, -0.5, 0.15, -0.4}
if !reflect.DeepEqual(output, expOutput) {
t.Log("input:", input)
t.Log("output:", output)
t.Fatal("unexpected output")
}
err = Delete(src)
if err != nil {
t.Fatal(err)
}
}
func TestProcessWithEndOfInputFlagSet(t *testing.T) {
src, err := New(SRC_SINC_FASTEST, 2, 100)
if err != nil {
t.Fatal(err)
}
input := []float32{0.1, -0.5, 0.2, -0.3}
output, err := src.Process(input, 2.0, true)
if err != nil {
t.Fatal(err)
}
expOutput := []float32{0.11488709,
-0.46334597, 0.18373828, -0.48996875, 0.1821644,
-0.32879135, 0.10804618, -0.11150829}
if !reflect.DeepEqual(output, expOutput) {
t.Log("input:", input)
t.Log("output:", output)
t.Fatal("unexpected output")
}
err = Delete(src)
if err != nil {
t.Fatal(err)
}
}
func TestProcessDataSliceBiggerThanInputBuffer(t *testing.T) {
src, err := New(SRC_LINEAR, 1, 100)
if err != nil {
t.Fatal(err)
}
input := make([]float32, 150)
_, err = src.Process(input, 150.0, true)
if err == nil {
t.Fatal("expected Error")
}
if err.Error() != "data slice is larger than buffer" {
t.Log("unexpected Error string")
}
}
func TestProcessErrorWithInvalidRatio(t *testing.T) {
src, err := New(SRC_LINEAR, 1, 100)
if err != nil {
t.Fatal(err)
}
input := make([]float32, 100)
_, err = src.Process(input, -5, true)
if err == nil {
t.Fatal("expected Error")
}
if err.Error() != "Error code: 6; SRC ratio outside [1/256, 256] range." {
t.Log(err.Error())
t.Log("unexpected Error string")
}
}
func TestGetChannels(t *testing.T) {
channels := 2
src, err := New(SRC_SINC_FASTEST, channels, 100)
if err != nil {
t.Fatal(err)
}
chLength, err := src.GetChannels()
if err != nil {
t.Fatal(err)
} else if chLength != channels {
t.Fatal("unexpected channel length")
}
}
func TestSetRatio(t *testing.T) {
src, err := New(SRC_LINEAR, 1, 10)
if err != nil {
t.Fatal(err)
}
if err = src.SetRatio(25.0); err != nil {
t.Fatal("unexpected result; should be valid conversion rate")
}
}
func TestSetRatioInvalid(t *testing.T) {
src, err := New(SRC_LINEAR, 1, 10)
if err != nil {
t.Fatal(err)
}
err = src.SetRatio(-5)
if err == nil {
t.Fatal("expected Error")
}
}
func TestIsValidRatio(t *testing.T) {
if !IsValidRatio(5) {
t.Fatal("unexpected result; should be valid")
}
if IsValidRatio(-1) {
t.Fatal("unexpected result; should be invalid")
}
if IsValidRatio(257) {
t.Fatal("unexpected result; should be invalid")
}
}
func TestErrors(t *testing.T) {
channels := 2
src, err := New(SRC_SINC_FASTEST, channels, 100)
if err != nil {
t.Fatal(err)
}
errNo := src.ErrorNo()
if errNo != 0 {
t.Fatal("unexpected error number")
}
errString := Error(0)
if errString != "No error." {
t.Fatal("unexpected Error string")
}
err = Delete(src)
if err != nil {
t.Fatal(err)
}
}
func closeEnough(a, b []float32) bool {
if len(a) != len(b) {
return false
}
for i, v := range a {
if v-b[i] > 0.00001 {
return false
}
}
return true
}