Add a unit test for map colors

src/test/java/org/bukkit/map/MapTest.java

@@ -0,0 +1,62 @@
+
+package org.bukkit.map;
+
+import java.awt.Color;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import net.minecraft.server.MaterialMapColor;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class MapTest {
+
+    private static final Logger logger = Logger.getLogger("MapTest");
+
+    private static final int[] modifiers = {180, 220, 255, 135};
+
+    @Test
+    public void testColors() {
+        MaterialMapColor[] nmsColors = MaterialMapColor.a;
+        Color[] bukkitColors = MapPalette.colors;
+
+        boolean fail = false;
+        for (int i = 0; i < nmsColors.length; i++) {
+            if (nmsColors[i] == null) {
+                break;
+            }
+            int rgb = nmsColors[i].L;
+
+            int r = (rgb >> 16) & 0xFF;
+            int g = (rgb >> 8) & 0xFF;
+            int b = rgb & 0xFF;
+
+            if (i > bukkitColors.length/4) {
+                for (int modi : modifiers) {
+                    int mr = (r * modi) / 255;
+                    int mg = (g * modi) / 255;
+                    int mb = (b * modi) / 255;
+                    logger.log(Level.WARNING, "Missing color: c({0}, {1}, {2})", new Object[]{mr, mg, mb});
+                }
+                fail = true;
+            } else {
+                for (int j = 0; j < modifiers.length; j++) {
+                    int modi = modifiers[j];
+                    Color bukkit = bukkitColors[i * 4 + j];
+                    int mr = (r * modi) / 255;
+                    int mg = (g * modi) / 255;
+                    int mb = (b * modi) / 255;
+
+                    if (bukkit.getRed() != mr || bukkit.getGreen() != mg || bukkit.getBlue() != mb) {
+                        logger.log(Level.WARNING, "Incorrect color: {6} {7} c({0}, {1}, {2}) != c({3}, {4}, {5})", new Object[]{
+                            bukkit.getRed(), bukkit.getGreen(), bukkit.getBlue(),
+                            mr, mg, mb,
+                            i, j
+                        });
+                        fail = true;
+                    }
+                }
+            }
+        }
+        Assert.assertFalse(fail);
+    }
+}