llvm-project/clang/test/SemaObjC/method-undef-category-warn-1.m

// RUN: %clang_cc1 -fsyntax-only -verify %s

@interface MyClass1
@end

@protocol P
- (void) Pmeth;  // expected-note {{method 'Pmeth' declared here}}
- (void) Pmeth1;  // expected-note {{method 'Pmeth1' declared here}}
@end

@interface MyClass1(CAT) <P>
- (void) meth2;              // expected-note {{method 'meth2' declared here}}
@end

@implementation MyClass1(CAT) // expected-warning {{method 'Pmeth' in protocol 'P' not implemented}} \
                              // expected-warning {{method definition for 'meth2' not found}}
- (void) Pmeth1{}
@end

@interface MyClass1(DOG) <P>
- (void)ppp;                 // expected-note {{method 'ppp' declared here}}
@end

@implementation MyClass1(DOG) // expected-warning {{method 'Pmeth1' in protocol 'P' not implemented}} \
                              // expected-warning {{method definition for 'ppp' not found}}
- (void) Pmeth {}
@end

@implementation MyClass1(CAT1)
@end

// rdar://10823023
@class NSString;

@protocol NSObject
- (NSString *)meth_inprotocol;
@end

@interface NSObject <NSObject>
- (NSString *)description;
+ (NSString *) cls_description;
@end

@protocol Foo 
- (NSString *)description;
+ (NSString *) cls_description;
@end

@interface NSObject (FooConformance) <Foo>
@end

@implementation NSObject (FooConformance)
@end

// rdar://11186449
// Don't warn when a category does not implemented a method imported
// by its protocol because another category has its declaration and
// that category will implement it.
@interface NSOrderedSet @end

@interface NSOrderedSet(CoolectionImplements)
- (unsigned char)containsObject:(id)object;
@end

@protocol Collection
- (unsigned char)containsObject:(id)object;
@end

@interface NSOrderedSet (CollectionConformance) <Collection>
@end

@implementation NSOrderedSet (CollectionConformance)
@end