[responsive-validator] - added converter of HEX to rgb(a)

Author: Denys Zaiats

src/main/java/util/general/SystemHelper.java

@@ -13,7 +13,7 @@ public static boolean isRetinaDisplay(Graphics2D g) {
             if (field != null) {
                 field.setAccessible(true);
                 Object scale = field.get(graphicsDevice);
-                if(scale instanceof Integer && ((Integer) scale).intValue() == 2) {
+                if (scale instanceof Integer && ((Integer) scale).intValue() == 2) {
                     isRetina = true;
                 }
             }
@@ -22,4 +22,31 @@ public static boolean isRetinaDisplay(Graphics2D g) {
         }
         return isRetina;
     }
+
+    public static String hexStringToARGB(String hexARGB) throws IllegalArgumentException {
+
+        if (!hexARGB.startsWith("#") || !(hexARGB.length() == 7 || hexARGB.length() == 9)) {
+
+            throw new IllegalArgumentException("Hex color string is incorrect!");
+        }
+
+        int[] intARGB;
+
+        if (hexARGB.length() == 9) {
+            intARGB = new int[4];
+            intARGB[0] = Integer.valueOf(hexARGB.substring(1, 3), 16); // alpha
+            intARGB[1] = Integer.valueOf(hexARGB.substring(3, 5), 16); // red
+            intARGB[2] = Integer.valueOf(hexARGB.substring(5, 7), 16); // green
+            intARGB[3] = Integer.valueOf(hexARGB.substring(7), 16); // blue
+
+            return String.format("rgba(%d,%d,%d,%.1f)", intARGB[1], intARGB[2], intARGB[3], (float)Math.round((((float)intARGB[0]/255) * 100)) / 100.f);
+        } else {
+            intARGB = new int[3];
+            intARGB[0] = Integer.valueOf(hexARGB.substring(1, 3), 16); // red
+            intARGB[1] = Integer.valueOf(hexARGB.substring(3, 5), 16); // green
+            intARGB[2] = Integer.valueOf(hexARGB.substring(5), 16); // blue
+
+            return String.format("rgb(%d,%d,%d)", intARGB[0], intARGB[1], intARGB[2]);
+        }
+    }
 }

src/main/java/util/validator/ResponsiveUIValidator.java

@@ -319,6 +319,7 @@ public ResponsiveUIValidator withCssValue(String cssProperty, String... args) {
 
         if (!cssValue.equals("")) {
             for (String val : args) {
+                val = !val.startsWith("#") ? val : SystemHelper.hexStringToARGB(val);
                 if (!TextFinder.textIsFound(val, cssValue)) {
                     putJsonDetailsWithoutElement(String.format("Expected value of '%s' is '%s'. Actual is '%s'", cssProperty, val, cssValue));
                 }

src/test/java/SystemHelperTest.java

@@ -0,0 +1,25 @@
+import org.junit.Assert;
+import org.junit.Test;
+import util.general.SystemHelper;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class SystemHelperTest {
+
+    @Test
+    public void testThatColorCanBeConvertedFromHexToRgb() {
+        Map<String, String> colors = new HashMap<>();
+        colors.put("rgb(0,0,0)", "#000000");
+        colors.put("rgb(255,255,255)", "#FFFFFF");
+        colors.put("rgba(255,255,255,1.0)", "#FFFFFFFF");
+        colors.put("rgba(255,255,255,0.0)", "#00FFFFFF");
+        colors.put("rgba(255,255,255,0.2)", "#33FFFFFF");
+        colors.put("rgba(255,255,255,0.5)", "#80FFFFFF");
+        colors.put("rgb(251,220,220)", "#fbdcdc");
+
+        for (Map.Entry<String, String> entry : colors.entrySet()) {
+            Assert.assertEquals(entry.getKey(), SystemHelper.hexStringToARGB(entry.getValue()));
+        }
+    }
+}