example.m

- (void)testDiskCache {
	
	// Test that we hit the disk cache 
	// First, nuke the cache, run it once, then clear the memory cache
	// Then, run the request again and make sure it loads from cache
	
	[[TVURLCache sharedCache] nuke];
	
	NSString * value = @"testDiskCache";
	NSString * url = @"http://testDiskCache";
	
	[self callURL:url withReturnString:value callback: ^(TVURLRequest * request) {
		
		TVURLCache * cache = [TVURLCache sharedCache];
		GHAssertTrue([cache diskCacheExists], @"Disk Cache was not created");

		[cache flush];
		[[TVURLCache sharedCache] clearMemoryCache];		
		
		// This is required for async tests
		[self prepare];
		
		[cache setOnNextSave:^ {
			
			// I think I needed to get back on the main thread
			
			[[NSOperationQueue mainQueue] addOperationWithBlock:^ {
				
				[self callURL:url withReturnString:@"NOT EQUAL TO ME" callback: ^(TVURLRequest * request) {		
								
					TVGetRequest * getRequest = (TVGetRequest*)request;
					GHAssertTrue(getRequest.hitCache, @"Disk - Should have hit the cache from disk");
					GHAssertEqualObjects(request.stringValue, value, [NSString stringWithFormat:@"Disk - Value should be equal to the original cached value %@", request.stringValue]);			
					
					[self notify:kGHUnitWaitStatusSuccess forSelector:@selector(testDiskCache)];					
				}];
			}];
		}];
		
		// It doesn't delay for 10 seconds, that's just the timeout
		[self waitForStatus:kGHUnitWaitStatusSuccess timeout:2.0];
	}];
}