to save up a progress

pkg/dithering/grid_test.go

@@ -9,6 +9,7 @@ import (
 	"os/exec"
 	"testing"
 	"time"
+	"reflect"
 
 	"git.nkpl.cc/twocookedfaggots/imageutils"
 )
@@ -17,6 +18,8 @@ func init() {
 	rand.Seed(time.Now().UnixNano())
 }
 
+const factor = 0.75
+
 func callImage(img image.Image) {
 	for y := 0; y < img.Bounds().Dy(); y++ {
 		for x := 0; x < img.Bounds().Dx(); x++ {
@@ -38,14 +41,14 @@ func TestGrid(t *testing.T) {
 
 	n := uint8(rand.Int() % 256)
 	t.Log(n)
-	img := imageutils.Scale(1<<6, grid{color.Gray{n}})
+	img := imageutils.Scale(grid{color.Gray{n}, factor}, 1<<6)
 	err = png.Encode(w, img)
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	callImage(grid{color.Gray{4}})
-	callImage(grid{color.Gray{0}})
+	callImage(grid{color.Gray{4}, factor})
+	callImage(grid{color.Gray{0}, factor})
 }
 
 func TestDithering(t *testing.T) {
@@ -66,8 +69,48 @@ func TestDithering(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	err = png.Encode(w, Dithering{img})
+	err = png.Encode(w, Dithering{img, factor})
 	if err != nil {
 		t.Fatal(err)
 	}
 }
+
+func TestRangeStruct(t *testing.T){
+	s := Dithering{image.Rectangle{},0}
+	value := reflect.ValueOf(s)
+	if value.Kind() == reflect.Ptr {
+		value = value.Elem()
+	}
+	if value.Kind() != reflect.Struct {
+		t.Log("Provided value is not a struct")
+	}
+	tp := value.Type()
+	for i := 0; i < value.NumField(); i++ {
+		fieldName := tp.Field(i).Name
+		fieldValue := value.Field(i)
+
+		if !fieldValue.CanInterface() {
+			t.Logf("Field %s is unexported\n", fieldName)
+			continue
+		}
+		if fieldValue.Kind() == reflect.Ptr {
+			fieldValue = fieldValue.Elem()
+		}
+		/*
+		if fieldValue.Kind() == reflect.Interface {
+			fieldValue = fieldValue.Elem()
+		}
+		*/
+
+
+		actualValue := fieldValue.Interface()
+		switch v := actualValue.(type) {
+		case float64:
+			t.Logf("Field '%s' is a float64.\n", fieldName)
+		case image.Image:
+			t.Logf("Field '%s' is a image.Image. Value: %q\n", fieldName, v) 
+		default:
+			t.Logf("Field '%s' has an unhandled type: %T\n", fieldName, v)
+		}
+	}
+}