Add test

(cherry-picked from commit fbe703c)

Author: kastiglione

lldb/test/API/lang/swift/variables/bridged_string/TestSwiftBridgedStringVariables.py

@@ -37,11 +37,13 @@ def test_swift_bridged_string_variables(self):
         s4 = self.frame().FindVariable("s4")
         s5 = self.frame().FindVariable("s5")
         s6 = self.frame().FindVariable("s6")
+        s7 = self.frame().FindVariable("s7")
 
         lldbutil.check_variable(self, s1, summary='"Hello world"')
         lldbutil.check_variable(self, s2, summary='"ΞΕΛΛΘ"')
         lldbutil.check_variable(self, s3, summary='"Hello world"')
         lldbutil.check_variable(self, s4, summary='"ΞΕΛΛΘ"')
         lldbutil.check_variable(self, s5, use_dynamic=True, summary='"abc"')
         lldbutil.check_variable(self, s6, summary='"abc"')
+        lldbutil.check_variable(self, s7, summary='"kCFRunLoopDefaultMode"')
 

lldb/test/API/lang/swift/variables/bridged_string/main.swift

@@ -19,6 +19,7 @@ func main()
 	let s4 = s2 as NSString
 	let s5 = "abc" as NSString
 	let s6 = String(s5)
+	let s7 = CFRunLoopMode.defaultMode!.rawValue as String
 	print(s1) // Set breakpoint here
         withExtendedLifetime((s2, s3, s4, s5, s6)) {}
 }