[Author: thomasvl]

The iOS 5.0 runtime doesn't seem to sort the class list any more, but
  it used to or we used to just get lucking in some of our testing.
  SenTest sorts the classes, so follow that lead also.

R=dmaclach
DELTA=13  (13 added, 0 deleted, 0 changed)

git-svn-id: http://google-toolbox-for-mac.googlecode.com/svn/trunk@513 7dc7ac4e-7543-0410-b95c-c1676fc8e2a3

UnitTesting/GTMIPhoneUnitTestDelegate.m

@@ -113,6 +113,14 @@ - (void)runTestsAndExit:(UIApplication *)application {
   [self setRetainer:nil];
 }
 
+static int ClassSort(const void *a, const void *b) {
+  Class *classA = (Class *)a;
+  Class *classB = (Class *)b;
+  const char *nameA = class_getName(*classA);
+  const char *nameB = class_getName(*classB);
+  return strcmp(nameA, nameB);
+}
+
 // Run through all the registered classes and run test methods on any
 // that are subclasses of SenTestCase. Print results and run time to
 // the default output.
@@ -123,6 +131,11 @@ - (void)runTests {
   Class *classes = (Class*)[classData mutableBytes];
   _GTMDevAssert(classes, @"Couldn't allocate class list");
   objc_getClassList(classes, count);
+
+  // Follow SenTest's lead and sort the classes.  (This may only be a change
+  // in the iOS 5 runtime, but make sure it is always sorted just incase)
+  mergesort(classes, count, sizeof(Class), ClassSort);
+
   totalFailures_ = 0;
   totalSuccesses_ = 0;
   NSString *suiteName = [[NSBundle mainBundle] bundlePath];