Stabilizing layout tests

utils/utils.android.ts

@@ -28,6 +28,14 @@ export module layout {
         return (size & ~MODE_MASK) | (mode & MODE_MASK);
     }
 
+    export function getDisplayMetrics(): android.util.DisplayMetrics {
+        if (!metrics) {
+            metrics = ad.getApplicationContext().getResources().getDisplayMetrics();
+        }
+
+        return metrics;
+    }
+
     export function getDisplayDensity(): number {
         if (density === -1) {
             density = getDisplayMetrics().density;
@@ -36,12 +44,12 @@ export module layout {
         return density;
     }
 
-    function getDisplayMetrics(): android.util.DisplayMetrics {
-        if (!metrics) {
-            metrics = ad.getApplicationContext().getResources().getDisplayMetrics();
-        }
+    export function toDevicePixels(value: number): number {
+        return value * getDisplayDensity();
+    }
 
-        return metrics;
+    export function toDeviceIndependentPixels(value: number): number {
+        return value / getDisplayDensity();
     }
 }
 
@@ -74,8 +82,8 @@ export module ad {
     }
 
     export module collections {
-        export function stringArrayToStringSet(str: string[]): any {
-            var hashSet = new java.util.HashSet();
+        export function stringArrayToStringSet(str: string[]): java.util.HashSet<string> {
+            var hashSet = new java.util.HashSet<string>();
             if ("undefined" !== typeof str) {
                 for (var element in str) {
                     hashSet.add('' + str[element]);

utils/utils.d.ts

@@ -50,6 +50,16 @@
          * Gets display density for the current device.
          */
         export function getDisplayDensity(): number;
+        /**
+         * Convert value to device pixels.
+         * @param value - The pixel to convert.
+         */
+        export function toDevicePixels(value: number): number;
+        /**
+         * Convert value to device independent pixels.
+         * @param value - The pixel to convert.
+         */
+        export function toDeviceIndependentPixels(value: number): number;
     }
 
     /**

utils/utils.ios.ts

@@ -18,24 +18,27 @@ export module layout {
     export function getDisplayDensity(): number {
         return 1;
     }
+
+    export function toDevicePixels(value: number): number {
+        return value * getDisplayDensity();
+    }
+
+    export function toDeviceIndependentPixels(value: number): number {
+        return value / getDisplayDensity();
+    }
 }
 
 export module ios {
     export module collections {
-        export function jsArrayToNSArray(str: string[]): any {
-            var arr = new NSMutableArray();
-            if ("undefined" !== typeof str) {
-                for (var element in str) {
-                    arr.addObject(str[element]);
-                }
-            }
-            return arr;
+        export function jsArrayToNSArray(str: string[]): NSArray {
+            return NSArray.arrayWithArray(<any>str);
         }
 
-        export function nsArrayToJSArray(a: any): string[] {
+        export function nsArrayToJSArray(a: NSArray): Array<Object> {
             var arr = [];
             if ("undefined" !== typeof a) {
-                for (var i = 0; i < a.count; i++) {
+                let count = a.count;
+                for (let i = 0; i < count; i++) {
                     arr.push(a.objectAtIndex(i));
                 }
             }