[Author: dmaclach]

Add support for more complex unit test class hierarchies than what is
available out of the box in SenTestCase. I currently have the release notes
checked out as part of a separate change, and will update them accordingly
for this as well.

R=thomasvl,mrossetti
DELTA=80  (79 added, 0 deleted, 1 changed)

3 files changed, 14 insertions, 0 deletions

diff --git a/Foundation/GTMObjC2Runtime.h b/Foundation/GTMObjC2Runtime.h
index 4f569a5..9f5afa0 100644
--- a/Foundation/GTMObjC2Runtime.h
+++ b/Foundation/GTMObjC2Runtime.h
@@ -55,6 +55,7 @@
 OBJC_EXPORT Class object_getClass(id obj);
 OBJC_EXPORT const char *class_getName(Class cls);
 OBJC_EXPORT BOOL class_conformsToProtocol(Class cls, Protocol *protocol);
+OBJC_EXPORT BOOL class_respondsToSelector(Class cls, SEL sel);
 OBJC_EXPORT Class class_getSuperclass(Class cls);
 OBJC_EXPORT Method *class_copyMethodList(Class cls, unsigned int *outCount);
 OBJC_EXPORT SEL method_getName(Method m);
diff --git a/Foundation/GTMObjC2Runtime.m b/Foundation/GTMObjC2Runtime.m
index 9835654..2eb5dc3 100644
--- a/Foundation/GTMObjC2Runtime.m
+++ b/Foundation/GTMObjC2Runtime.m
@@ -58,6 +58,10 @@ Class class_getSuperclass(Class cls) {
   return cls->super_class;
 }
 
+BOOL class_respondsToSelector(Class cls, SEL sel) {
+  return class_getInstanceMethod(cls, sel) != nil;
+}
+
 Method *class_copyMethodList(Class cls, unsigned int *outCount) {
   if (!cls) return NULL;
 
diff --git a/Foundation/GTMObjC2RuntimeTest.m b/Foundation/GTMObjC2RuntimeTest.m
index 7344a0f..7a88f23 100644
--- a/Foundation/GTMObjC2RuntimeTest.m
+++ b/Foundation/GTMObjC2RuntimeTest.m
@@ -160,6 +160,15 @@ AT_REQUIRED
                nil);
 }
 
+- (void)test_class_respondsToSelector {
+  // Nil Checks
+  STAssertFalse(class_respondsToSelector(cls_, @selector(setUp)), nil);
+  STAssertFalse(class_respondsToSelector(cls_, nil), nil);
+  
+  // Standard use check
+  STAssertTrue(class_respondsToSelector(cls_, @selector(kwyjibo)), nil); 
+}
+
 - (void)test_class_getSuperclass {
   // Nil Checks
   STAssertNil(class_getSuperclass(nil), nil);