DWARFImporter: Add a test for inheriting from an Objective-C class.

apple-llvm-split-commit: d5605321f9f70c349c01778a6c5fa95b16f1f2b1
apple-llvm-split-dir: lldb/

Author: adrian-prantl

lldb/packages/Python/lldbsuite/test/lang/swift/dwarfimporter/Objective-C/Inputs/objc-header.h

@@ -8,7 +8,8 @@
 @protocol ObjCProtocol <WithName>
 @end
 
-@interface ObjCClass : NSObject
+@interface ObjCClass : NSObject {
+}
 - (instancetype)init;
 @end
 

lldb/packages/Python/lldbsuite/test/lang/swift/dwarfimporter/Objective-C/TestSwiftDWARFImporterObjC.py

@@ -49,7 +49,10 @@ def test_dwarf_importer(self):
                                 target.FindFirstGlobalVariable("obj"),
                                 typename="Swift.Optional<__ObjC.ObjCClass>",
                                 num_children=0)
-        self.expect("target var obj", substrs=["ObjCClass", "private_ivar", "42"])
+        self.expect("target var obj", substrs=["ObjCClass",
+                                               "private_ivar", "42"])
+        self.expect("target var swiftChild", substrs=["ObjCClass",
+                                                      "private_ivar", "42"])
         # This is a Clang type, since Clang doesn't generate DWARF for protocols.
         self.expect("target var -d no-dyn proto", substrs=["(id)", "proto"])
         # This is a Swift type.

lldb/packages/Python/lldbsuite/test/lang/swift/dwarfimporter/Objective-C/main.swift

@@ -2,9 +2,16 @@ import ObjCModule
 
 func use<T>(_ t: T) {}
 
+class SwiftChild : ObjCClass {
+}
+
+
 let pureSwift = 42
 let obj = ObjCClass()
 let proto = getProto()
+let swiftChild = SwiftChild()
+
 use(pureSwift) // break here
 use(obj)
 use(proto)
+use(swiftChild)