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//
// GTMNSObject+BindingUnitTesting.h
//
// Utilities for doing advanced unittesting with object bindings.
//
// Copyright 2006-2008 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy
// of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
//
#include <Foundation/Foundation.h>
// Utility functions for GTMTestExposedBindings Macro. Don't use it directly
// but use the macro below instead
BOOL GTMDoExposedBindingsFunctionCorrectly(NSObject *object,
NSArray **errors);
// Tests the setters and getters for exposed bindings
// For objects that expose bindings, this tests them for you, saving you from
// having to write a whole pile of set/get test code if you add binding support.
// You will need to implement valueClassForBinding: for your bindings,
// and you may possibly want to implement unitTestExposedBindingsToIgnore
// and unitTestExposedBindingsTestValues. See descriptions of those
// methods below for details.
// Implemented as a macro to match the rest of the SenTest macros.
//
// Args:
// a1: The object to be checked.
// description: A format string as in the printf() function.
// Can be nil or an empty string but must be present.
// ...: A variable number of arguments to the format string. Can be absent.
//
#define GTMTestExposedBindings(a1, description, ...) \
do { \
NSObject *a1Object = (a1); \
NSArray *errors = nil; \
BOOL isGood = GTMDoExposedBindingsFunctionCorrectly(a1Object, &errors); \
if (!isGood) { \
NSString *failString; \
GTM_FOREACH_OBJECT(failString, errors) { \
if (description != nil) { \
STFail(@"%@: %@", failString, STComposeString(description, ##__VA_ARGS__)); \
} else { \
STFail(@"%@", failString); \
} \
} \
} \
} while(0)
// Utility class for setting up Binding Tests. Basically a pair of a value to
// set a binding to, followed by the expected return value.
// See description of gtm_unitTestExposedBindingsTestValues: below
// for example of usage.
@interface GTMBindingUnitTestData : NSObject {
@private
id valueToSet_;
id expectedValue_;
}
+ (id)testWithIdentityValue:(id)value;
+ (id)testWithValue:(id)value expecting:(id)expecting;
- (id)initWithValue:(id)value expecting:(id)expecting;
- (id)valueToSet;
- (id)expectedValue;
@end
@interface NSObject (GTMBindingUnitTestingAdditions)
// Allows you to ignore certain bindings when running GTMTestExposedBindings
// If you have bindings you want to ignore, add them to the array returned
// by this method. The standard way to implement this would be:
// - (NSMutableArray*)unitTestExposedBindingsToIgnore {
// NSMutableArray *array = [super unitTestExposedBindingsToIgnore];
// [array addObject:@"bindingToIgnore1"];
// ...
// return array;
// }
// The NSObject implementation by default will ignore NSFontBoldBinding,
// NSFontFamilyNameBinding, NSFontItalicBinding, NSFontNameBinding and
// NSFontSizeBinding if your exposed bindings contains NSFontBinding because
// the NSFont*Bindings are NOT KVC/KVO compliant.
- (NSMutableArray*)gtm_unitTestExposedBindingsToIgnore;
// Allows you to set up test values for your different bindings.
// if you have certain values you want to test against your bindings, add
// them to the array returned by this method. The array is an array of
// GTMBindingUnitTestData.
// The standard way to implement this would be:
// - (NSMutableArray*)gtm_unitTestExposedBindingsTestValues:(NSString*)binding {
// NSMutableArray *dict = [super unitTestExposedBindingsTestValues:binding];
// if ([binding isEqualToString:@"myBinding"]) {
// MySpecialBindingValueSet *value
// = [[[MySpecialBindingValueSet alloc] init] autorelease];
// [array addObject:[GTMBindingUnitTestData testWithIdentityValue:value]];
// ...
// else if ([binding isEqualToString:@"myBinding2"]) {
// ...
// }
// return array;
// }
// The NSObject implementation handles many of the default bindings, and
// gives you a reasonable set of test values to start.
// See the implementation for the current list of bindings, and values that we
// set for those bindings.
- (NSMutableArray*)gtm_unitTestExposedBindingsTestValues:(NSString*)binding;
// A special version of isEqualTo to test whether two binding values are equal
// by default it calls directly to isEqualTo: but can be overridden for special
// cases (like NSImages) where the standard isEqualTo: isn't sufficient.
- (BOOL)gtm_unitTestIsEqualTo:(id)value;
@end
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