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package bimg
import (
"fmt"
"path"
"testing"
)
func TestImageResize(t *testing.T) {
buf, err := initImage("test.jpg").Resize(300, 240)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 300, 240)
if err != nil {
t.Error(err)
}
Write("fixtures/test_resize_out.jpg", buf)
}
func TestImageExtract(t *testing.T) {
buf, err := initImage("test.jpg").Extract(100, 100, 300, 300)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 300, 300)
if err != nil {
t.Error(err)
}
Write("fixtures/test_extract_out.jpg", buf)
}
func TestImageEnlarge(t *testing.T) {
buf, err := initImage("test.png").Enlarge(500, 375)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 500, 375)
if err != nil {
t.Error(err)
}
Write("fixtures/test_enlarge_out.jpg", buf)
}
func TestImageCrop(t *testing.T) {
buf, err := initImage("test.jpg").Crop(800, 600)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 800, 600)
if err != nil {
t.Error(err)
}
Write("fixtures/test_crop_out.jpg", buf)
}
func TestImageCropByWidth(t *testing.T) {
buf, err := initImage("test.jpg").CropByWidth(600)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 600, 375)
if err != nil {
t.Error(err)
}
Write("fixtures/test_crop_width_out.jpg", buf)
}
func TestImageCropByHeight(t *testing.T) {
buf, err := initImage("test.jpg").CropByHeight(300)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 480, 300)
if err != nil {
t.Error(err)
}
Write("fixtures/test_crop_height_out.jpg", buf)
}
func TestImageThumbnail(t *testing.T) {
buf, err := initImage("test.jpg").Thumbnail(100)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
err = assertSize(buf, 100, 100)
if err != nil {
t.Error(err)
}
Write("fixtures/test_thumbnail_out.jpg", buf)
}
func TestImageFlip(t *testing.T) {
buf, err := initImage("test.jpg").Flip()
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
Write("fixtures/test_flip_out.jpg", buf)
}
func TestImageFlop(t *testing.T) {
buf, err := initImage("test.jpg").Flop()
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
Write("fixtures/test_flop_out.jpg", buf)
}
func TestImageRotate(t *testing.T) {
buf, err := initImage("test_flip_out.jpg").Rotate(90)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
Write("fixtures/test_image_rotate_out.jpg", buf)
}
func TestImageConvert(t *testing.T) {
buf, err := initImage("test.jpg").Convert(PNG)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
Write("fixtures/test_image_convert_out.png", buf)
}
func TestImageMetadata(t *testing.T) {
data, err := initImage("test.png").Metadata()
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
if data.Alpha != true {
t.Fatal("Invalid alpha channel")
}
if data.Size.Width != 400 {
t.Fatal("Invalid width size")
}
if data.Type != "png" {
t.Fatal("Invalid image type")
}
}
func TestFluentInterface(t *testing.T) {
image := initImage("test.jpg")
_, err := image.CropByWidth(300)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
_, err = image.Flip()
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
buf, err := image.Convert(PNG)
if err != nil {
t.Errorf("Cannot process the image: %#v", err)
}
data, _ := image.Metadata()
if data.Alpha != false {
t.Fatal("Invalid alpha channel")
}
if data.Size.Width != 300 {
t.Fatal("Invalid width size")
}
if data.Type != "png" {
t.Fatal("Invalid image type")
}
Write("fixtures/test_image_fluent_out.png", buf)
}
func initImage(file string) *Image {
buf, _ := Read(path.Join("fixtures", file))
return NewImage(buf)
}
func assertSize(buf []byte, width, height int) error {
size, err := NewImage(buf).Size()
if err != nil {
return err
}
if size.Width != width || size.Height != height {
return fmt.Errorf("Invalid image size: %dx%d", size.Width, size.Height)
}
return nil
}