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generator_test.go
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generator_test.go
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package plavatar
import (
"bytes"
"crypto/sha256"
"fmt"
"image/png"
"io"
"strings"
"testing"
)
var avatarGenerator = Generator{}
func TestAvatarSolid(t *testing.T) {
var shaHasher = sha256.New()
generatedAvatar, rngSeed, err := avatarGenerator.GenerateAvatar(avatarGenerator.Solid, &Options{
Name: "8",
OutputSize: 512,
OutputFormat: FormatPNG,
OutputShape: ShapeSquare,
})
if err != nil {
t.Fatal("err != nil", err)
}
if rngSeed != "8" {
t.Fatal("rngSeed mismatch")
}
shaHasher.Write(generatedAvatar.Bytes())
hash := fmt.Sprintf("%x", shaHasher.Sum(nil))
if strings.ToLower(hash) != "90c34a5824d789ef4323fcd7b4fe5260ac68a95e843629a7e922c091d0c5445e" {
t.Error("hash missmatch. check if intentional and change hash accordingly.", hash)
}
_, _, err = avatarGenerator.GenerateAvatar(avatarGenerator.Solid, &Options{
Name: "8",
OutputFormat: FormatPNG,
OutputShape: ShapeSquare,
})
if err == nil {
t.Fatal("err should not be nil, no size for PNG passed")
}
}
func TestAvatarLaughing(t *testing.T) {
var shaHasher = sha256.New()
generatedAvatar, rngSeed, err := avatarGenerator.GenerateAvatar(avatarGenerator.Laughing, &Options{
Name: "6",
OutputSize: 256,
OutputFormat: FormatPNG,
OutputShape: ShapeCircle,
})
if err != nil {
t.Fatal("err != nil", err)
}
if rngSeed != "6" {
t.Fatal("rngSeed mismatch")
}
tmpGeneratedAvatarBuffer, err := io.ReadAll(generatedAvatar)
if err != nil {
t.Fatal("failed reading avatar buffer")
}
parsedPng, err := png.Decode(bytes.NewBuffer(tmpGeneratedAvatarBuffer))
if err != nil {
t.Fatal("failed decoding generated png")
}
if parsedPng.Bounds().Size().X != 256 || parsedPng.Bounds().Size().Y != 256 {
t.Fatal("wrong output size, check image scaling logic")
}
shaHasher.Write(tmpGeneratedAvatarBuffer)
hash := fmt.Sprintf("%x", shaHasher.Sum(nil))
if strings.ToLower(hash) != "102176c91b530b457c7c3d341e34ca677ac78a7d86319981d0b88e99913c83dc" {
t.Error("hash missmatch. check if intentional and change hash accordingly.", hash)
}
}
// todo: check svg contents
func TestAvatarSmileySVG(t *testing.T) {
_, rngSeed, err := avatarGenerator.GenerateAvatar(avatarGenerator.Smiley, &Options{
Name: "6",
OutputFormat: FormatSVG,
OutputShape: ShapeCircle,
})
if err != nil {
t.Fatal("err != nil", err)
}
if rngSeed != "6" {
t.Fatal("rngSeed mismatch")
}
}
func BenchmarkAvatarSmileyPNG(b *testing.B) {
for i := 0; i < b.N; i++ {
_, _, err := avatarGenerator.GenerateAvatar(avatarGenerator.Smiley, &Options{
Name: "6",
OutputSize: 512,
OutputFormat: FormatPNG,
OutputShape: ShapeCircle,
})
if err != nil {
b.Fatal(err)
}
}
}
func BenchmarkAvatarSmileySVG(b *testing.B) {
for i := 0; i < b.N; i++ {
_, _, err := avatarGenerator.GenerateAvatar(avatarGenerator.Smiley, &Options{
Name: "6",
OutputSize: 512,
OutputFormat: FormatSVG,
OutputShape: ShapeCircle,
})
if err != nil {
b.Fatal(err)
}
}
}