Added nextIntRange to dartvm and dart2js.

tests/lib/math/math2_test.dart

Index: tests/lib/math/math2_test.dart
diff --git a/tests/lib/math/math2_test.dart b/tests/lib/math/math2_test.dart
index cf71142d7ca27305129c0e9ecdfe7e96b5c1d470..21ff940ff3f28f85c0634f39fa85e3a597a1feed 100644
--- a/tests/lib/math/math2_test.dart
+++ b/tests/lib/math/math2_test.dart
@@ -241,6 +241,12 @@ class MathLibraryTest {
     Expect.equals(true, parseIntThrowsFormatException("   +0x100   "));
   }
 
+  static void testRandom() {
+    math.Random r = new math.Random();
+    checkClose(5, r.nextIntRange(1, 10), 10);

[floitsch, 2013/11/18 13:36:03]

checkClose is typed for doubles. This will throw in checked mode.

Check by hand that it is in the range.
Also: Add 3 more tests:
- one that has min negative: Expect.throws(...)
- one that has min == max.
- one that has min == max - 1. (just one value). and make sure the returned
value equals min.

+    checkClose(5, r.nextInt(10), 10);
+  }
+
   static testMain() {
     testConstants();
     testSin();
@@ -255,6 +261,7 @@ class MathLibraryTest {
     testExp();
     testPow();
     testParseInt();
+    testRandom();
   }
 }