NSKVOSupport: Add test cases

Tests/base/NSKVOSupport/basic.m

@@ -0,0 +1,69 @@
+#import <Foundation/Foundation.h>
+#import "ObjectTesting.h"
+
+@interface Foo : NSObject
+@property (assign) BOOL a;
+@property (assign) NSInteger b;
+@property (nonatomic, strong) NSString* c;
+@property (nonatomic, strong) NSArray* d;
+@end
+
+@implementation Foo
+@end
+
+@interface Observer : NSObject
+@property (assign) Foo* object;
+@property (assign) NSString* expectedKeyPath;
+@property (assign) NSInteger receivedCalls;
+
+@end
+
+@implementation Observer
+
+- (id)init {
+	self = [super init];
+	if (self) {
+		self.receivedCalls = 0;
+	}
+	return self;
+}
+
+static char observerContext;
+
+- (void)startObserving:(Foo*)target
+{
+	self.object = target;
+	[target addObserver:self forKeyPath:@"a" options:0 context:&observerContext];
+	[target addObserver:self forKeyPath:@"b" options:0 context:&observerContext];
+	[target addObserver:self forKeyPath:@"c" options:0 context:&observerContext];
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString*,id> *)change context:(void *)context
+{
+	PASS(context == &observerContext, "context");
+	PASS(object == self.object, "object");
+	PASS([keyPath isEqualToString:self.expectedKeyPath], "key path");
+	self.receivedCalls++;
+}
+
+@end
+
+int main(int argc, char *argv[]) {
+	[NSAutoreleasePool new];
+
+	Foo* foo = [Foo new];
+	Observer* obs = [Observer new];
+	[obs startObserving:foo];
+
+	obs.expectedKeyPath = @"a";
+	foo.a = YES;
+	PASS(obs.receivedCalls == 1, "received calls")
+
+	obs.expectedKeyPath = @"b";
+	foo.b = 1;
+	PASS(obs.receivedCalls == 2, "received calls")
+
+	obs.expectedKeyPath = @"c";
+	foo.c = @"henlo";
+	PASS(obs.receivedCalls == 3, "received calls")
+}

Tests/base/NSKVOSupport/newoldvalues.m

@@ -0,0 +1,122 @@
+#import <Foundation/Foundation.h>
+#import "ObjectTesting.h"
+
+@class Bar;
+
+@interface Foo : NSObject
+@property (assign) Bar* globalBar;
+@property (assign) NSInteger a;
+@property (readonly) NSInteger b;
+@end
+
+@interface Bar : NSObject
+@property (assign) NSInteger x;
+@property (strong, nonatomic) Foo* firstFoo;
+@property (strong, nonatomic) Foo* secondFoo;
+@end
+
+
+@implementation Foo
+
++ (NSSet<NSString*>*)keyPathsForValuesAffectingB
+{
+	return [NSSet setWithArray:@[@"a", @"globalBar.x"]];
+}
+
+- (NSInteger)b
+{
+	return self.a + self.globalBar.x;
+}
+
+@end
+
+@implementation Bar
+
+- (id)init {
+	self = [super init];
+	if (self) {
+		self.firstFoo = [Foo new];
+		self.firstFoo.globalBar = self;
+		self.secondFoo = [Foo new];
+		self.secondFoo.globalBar = self;
+	}
+	return self;
+}
+@end
+
+@interface Observer : NSObject
+@property (assign) Foo* object;
+@property (assign) NSInteger expectedOldValue;
+@property (assign) NSInteger expectedNewValue;
+@property (assign) NSInteger receivedCalls;
+@end
+
+@implementation Observer
+
+- (id)init {
+	self = [super init];
+	if (self) {
+		self.receivedCalls = 0;
+	}
+	return self;
+}
+
+static char observerContext;
+
+- (void)startObserving:(Foo*)target
+{
+	self.object = target;
+	[target addObserver:self forKeyPath:@"b" options:NSKeyValueObservingOptionNew|NSKeyValueObservingOptionOld context:&observerContext];
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString*,id> *)change context:(void *)context
+{
+	PASS(context == &observerContext, "context is correct");
+	PASS(object == self.object, "object is correct");
+
+	id newValue = change[NSKeyValueChangeNewKey];
+	id oldValue = change[NSKeyValueChangeOldKey];
+
+	PASS([oldValue integerValue] == self.expectedOldValue, "new value in change dict");
+	PASS([newValue integerValue] == self.expectedNewValue, "old value in change dict");
+	self.receivedCalls++;
+}
+
+@end
+
+int main(int argc, char *argv[]) {
+	[NSAutoreleasePool new];
+
+	Bar* bar = [Bar new];
+	bar.x = 0;
+	bar.firstFoo.a = 1;
+	bar.secondFoo.a = 2;
+
+	Observer* obs1 = [Observer new];
+	Observer* obs2 = [Observer new];
+	[obs1 startObserving:bar.firstFoo];
+	[obs2 startObserving:bar.secondFoo];
+
+	obs1.expectedOldValue = 1;
+	obs1.expectedNewValue = 2;
+	obs2.expectedOldValue = 2;
+	obs2.expectedNewValue = 3;
+	bar.x = 1;
+	PASS(obs1.receivedCalls == 1, "num observe calls");
+	PASS(obs2.receivedCalls == 1, "num observe calls");
+
+	obs1.expectedOldValue = 2;
+	obs1.expectedNewValue = 2;
+	obs2.expectedOldValue = 3;
+	obs2.expectedNewValue = 3;
+	bar.x = 1;
+	PASS(obs1.receivedCalls == 2, "num observe calls");
+	PASS(obs2.receivedCalls == 2, "num observe calls");
+
+	obs1.expectedOldValue = 2;
+	obs1.expectedNewValue = 3;
+	bar.firstFoo.a = 2;
+	PASS(obs1.receivedCalls == 3, "num observe calls");
+	PASS(obs2.receivedCalls == 2, "num observe calls");
+
+}