Mise à jour de la class ByteGrayColor

src/main/java/ByteGrayColor.java

@@ -10,7 +10,8 @@ public class ByteGrayColor implements GrayColor {
     private static final int MAXIMUM_GRAY_LEVEL = 255;
     private static final int OPACITY = 1;
 
-    // TODO : add static ByteGrayColors WHITE and BLACK
+    public static final ByteGrayColor BLACK = new ByteGrayColor(MAXIMUM_GRAY_LEVEL);
+    public static final ByteGrayColor WHITE = new ByteGrayColor(MINIMUM_GRAY_LEVEL);
 
     private final int grayLevel;
 
@@ -20,19 +21,17 @@ public class ByteGrayColor implements GrayColor {
     }
 
     public ByteGrayColor(int grayLevel) {
-        // TODO : Corriger l'initialisation de la propriété grayLevel de l'instance.
-        this.grayLevel = 0;
+        this.grayLevel = grayLevel;
     }
 
     public ByteGrayColor(double luminosity) {
-        // TODO : Corriger l'initialisation de la propriété grayLevel de l'instance.
-        this.grayLevel = 0;
+        this.grayLevel = (int) (luminosity * MAXIMUM_GRAY_LEVEL);
     }
 
+
     @Override
     public double getLuminosity() {
-        // TODO : Retourner la luminosité de la couleur (entre 0 noir et 1 blanc)
-        return 0;
+        return this.grayLevel / (double) MAXIMUM_GRAY_LEVEL;
     }
 
     @Override
@@ -44,8 +43,7 @@ public class ByteGrayColor implements GrayColor {
 
     @Override
     public int compareTo(GrayColor o) {
-        // TODO : Retourner la différence de niveau de gris.
-        return 0;
+        return Double.compare(this.getLuminosity(), o.getLuminosity());
     }
 
     @Override

src/test/java/ByteGrayColorTest.java

@@ -5,7 +5,6 @@ import static org.assertj.core.api.Assertions.*;
 
 public class ByteGrayColorTest {
   @Test
-  @Disabled
   public void testGetLuminosity_whenColorCreatedWithGrayLevel(){
     ByteGrayColor black = new ByteGrayColor(0);
     ByteGrayColor white = new ByteGrayColor(255);
@@ -14,7 +13,6 @@ public class ByteGrayColorTest {
   }
 
   @Test
-  @Disabled
   public void testGetLuminosity_whenColorCreatedWithLuminosity(){
     ByteGrayColor color1 = new ByteGrayColor(.25);
     ByteGrayColor color2 = new ByteGrayColor(.75);
@@ -23,7 +21,6 @@ public class ByteGrayColorTest {
   }
 
   @Test
-  @Disabled
   public void testCompareTo_whenColorsCreatedWithGrayLevel(){
     ByteGrayColor color1 = new ByteGrayColor(100);
     ByteGrayColor color2 = new ByteGrayColor(150);
@@ -38,7 +35,6 @@ public class ByteGrayColorTest {
   }
 
   @Test
-  @Disabled
   public void testCompareTo_whenColorsCreatedWithLuminosity(){
     ByteGrayColor color1 = new ByteGrayColor(0.20);
     ByteGrayColor color2 = new ByteGrayColor(0.60);
@@ -53,7 +49,6 @@ public class ByteGrayColorTest {
   }
 
   @Test
-  @Disabled
   public void testCompareTo_whenColorsCreatedWithLuminosityAndGrayLevel(){
     ByteGrayColor color1 = new ByteGrayColor(0.);
     ByteGrayColor color2 = new ByteGrayColor(150);