Test expansion of nested objc objects

Author: kastiglione

lldb/test/API/commands/dwim-print/objc/Makefile

@@ -1,3 +1,3 @@
 OBJC_SOURCES := main.m
-
+LD_EXTRAS := -framework Foundation
 include Makefile.rules

lldb/test/API/commands/dwim-print/objc/TestDWIMPrintObjC.py

@@ -13,4 +13,7 @@ class TestCase(TestBase):
     def test(self):
         self.build()
         lldbutil.run_to_source_breakpoint(self, "break here", lldb.SBFileSpec("main.m"))
-        self.expect("dwim-print obj", substrs=["_number = 15"])
+        self.expect("dwim-print parent", substrs=["_child = 0x"])
+        self.expect(
+            "dwim-print parent.child", patterns=[r'_name = 0x[0-9a-f]+ @"Seven"']
+        )

lldb/test/API/commands/dwim-print/objc/main.m

@@ -1,15 +1,24 @@
 #import <Foundation/Foundation.h>
 
-@interface Object : NSObject
-@property(nonatomic) int number;
+@interface Child : NSObject
+@property(nonatomic, copy) NSString *name;
 @end
 
-@implementation Object
+@implementation Child
+@end
+
+@interface Parent : NSObject
+@property(nonatomic, strong) Child *child;
+@end
+
+@implementation Parent
 @end
 
 int main(int argc, char **argv) {
-  Object *obj = [Object new];
-  obj.number = 15;
+  Child *child = [Child new];
+  child.name = @"Seven";
+  Parent *parent = [Parent new];
+  parent.child = child;
   puts("break here");
   return 0;
 }