a bit more into the unit test class

@@ -842,7 +842,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = $SOURCE_ROOT/RunIPhoneUnitTest.sh;
+			shellScript = "#$SOURCE_ROOT/RunIPhoneUnitTest.sh";
 		};
 		386676E00F6B73DA00C56B17 /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;

@@ -8,6 +8,7 @@
 
 #import "GTMSenTestCase.h"
 
+/// Unit tests go here. See http://developer.apple.com/tools/unittest.html for guidance.
 @interface RouteMeTests : SenTestCase {
 }
 

@@ -33,8 +33,12 @@
 	STAssertNotNil((myTilesource = [[RMCloudMadeMapSource alloc] initWithAccessKey:@"0199bdee456e59ce950b0156029d6934" styleNumber:999]),
 				   @"tilesource creation failed");
 	STAssertNoThrow([myTilesource release], @"tilesource release failed");
-	STAssertNil((myTilesource = [[RMCloudMadeMapSource alloc] initWithAccessKey:@"0199bdee456e59ce950b0156029d693" styleNumber:999]),
-				   @"bogus CloudMade key does not trigger error");
+	STAssertNil((myTilesource = [[RMCloudMadeMapSource alloc] initWithAccessKey:nil styleNumber:999]),
+				@"empty CloudMade key does not trigger error");
+	STAssertNoThrow([myTilesource release], @"tilesource release failed");
+	STAssertThrows((myTilesource = [[RMCloudMadeMapSource alloc] initWithAccessKey:@"0199bdee456e59ce950b0156029d693" styleNumber:999]),
+				@"bogus CloudMade key does not trigger error");
+	STAssertNoThrow([myTilesource release], @"tilesource release failed");
 }
 
 - (void)testGeohashing