added String?.orElse() to match Collection?.orElse()

runtests/test/stdlib/testall/CollectionTestAllTest.java

@@ -18,11 +18,12 @@ package stdlib.testall;
 
 import junit.framework.TestSuite;
 import test.collections.*;
+import test.string.*;
 
 /**
  */
 public class CollectionTestAllTest {
   public static TestSuite suite() {
-    return new TestSuite(CollectionTest.class, MapTest.class);
+    return new TestSuite(StringTest.class, CollectionTest.class, MapTest.class);
   }
 }

stdlib/ktSrc/String.kt

@@ -162,3 +162,6 @@ inline fun String.subSequence(beginIndex : Int, endIndex : Int) = (this as java.
 inline fun String.toLowerCase(locale : java.util.Locale) = (this as java.lang.String).toLowerCase(locale).sure()
 
 inline fun String.toUpperCase(locale : java.util.Locale) = (this as java.lang.String).toUpperCase(locale).sure()
+
+/** Returns the string if it is not null or the empty string if its null */
+inline fun String?.orEmpty(): String = this ?: ""

testlib/test/StringTest.kt

@@ -1,4 +1,4 @@
-package testString
+package test.string
 
 import kotlin.io.*
 import kotlin.test.*
@@ -25,4 +25,12 @@ class StringTest() : TestCase() {
             sum += (c.toInt() - '0'.toInt())
         assertTrue(sum == 14)
     }
+
+    fun testOrEmpty() {
+        val s: String? = "hey"
+        val ns: String? = null
+
+        assertEquals("hey", s.orEmpty())
+        assertEquals("", ns.orEmpty())
+    }
 }