[NamedLazyMemberLoading] Add testcase for categories.

Author: graydon

test/NameBinding/Inputs/NamedLazyMembers/NamedLazyMembers.h

@@ -51,6 +51,28 @@
 @end
 
 
+// Don't conform to the protocol; that loads all protocol members.
+@interface SimpleDoer (Category)
+- (void)categoricallyDoSomeWork;
+- (void)categoricallyDoSomeWorkWithSpeed:(int)s;
+- (void)categoricallyDoSomeWorkWithSpeed:(int)s thoroughness:(int)t
+  NS_SWIFT_NAME(categoricallyDoVeryImportantWork(speed:thoroughness:));
+- (void)categoricallyDoSomeWorkWithSpeed:(int)s alacrity:(int)a
+  NS_SWIFT_NAME(categoricallyDoSomeWorkWithSpeed(speed:levelOfAlacrity:));
+
+// These we are generally trying to not-import, via laziness.
+- (void)categoricallyGoForWalk;
+- (void)categoricallyTakeNap;
+- (void)categoricallyEatMeal;
+- (void)categoricallyTidyHome;
+- (void)categoricallyCallFamily;
+- (void)categoricallySingSong;
+- (void)categoricallyReadBook;
+- (void)categoricallyAttendLecture;
+- (void)categoricallyWriteLetter;
+@end
+
+
 @protocol MirroredBase
 + (void)mirroredBaseClassMethod;
 - (void)mirroredBaseInstanceMethod;

test/NameBinding/named_lazy_member_loading_objc_category.swift

@@ -0,0 +1,20 @@
+// REQUIRES: objc_interop
+// REQUIRES: OS=macosx
+// RUN: rm -rf %t && mkdir -p %t/stats-pre && mkdir -p %t/stats-post
+//
+// Prime module cache
+// RUN: %target-swift-frontend -typecheck -I %S/Inputs/NamedLazyMembers -typecheck %s
+//
+// Check that named-lazy-member-loading reduces the number of Decls deserialized
+// RUN: %target-swift-frontend -typecheck -I %S/Inputs/NamedLazyMembers -disable-named-lazy-member-loading -stats-output-dir %t/stats-pre %s
+// RUN: %target-swift-frontend -typecheck -I %S/Inputs/NamedLazyMembers -stats-output-dir %t/stats-post %s
+// RUN: %utils/process-stats-dir.py --evaluate-delta 'NumTotalClangImportedEntities < -10' %t/stats-pre %t/stats-post
+
+import NamedLazyMembers
+
+public func foo(d: SimpleDoer) {
+  let _ = d.categoricallyDoSomeWork()
+  let _ = d.categoricallyDoSomeWork(withSpeed:10)
+  let _ = d.categoricallyDoVeryImportantWork(speed:10, thoroughness:12)
+  let _ = d.categoricallyDoSomeWorkWithSpeed(speed:10, levelOfAlacrity:12)
+}