stdlib: Introduced Array<T>?.orEmpty() in JVM-stdlib

libraries/stdlib/test/collections/ArraysJVMTest.kt

@@ -197,4 +197,18 @@ class ArraysJVMTest {
         expect(3000000000000) { longArray(1000000000000, 2000000000000).sum() }
         expect(3.0.toFloat()) { floatArray(1.0.toFloat(), 2.0.toFloat()).sum() }
     }
+
+    test fun orEmptyNull() {
+        val x: Array<String>? = null
+        val xArray: Array<String> = x.orEmpty()
+        expect(0) { xArray.size }
+    }
+
+    test fun orEmptyNotNull() {
+        val x: Array<String>? = array("1", "2")
+        val xArray: Array<String> = x.orEmpty()
+        expect(2) { xArray.size }
+        expect("1") { xArray[0] }
+        expect("2") { xArray[1] }
+    }
 }