Push ID Generator Test

testGeneratePushId.m

#import <XCTest/XCTest.h>
#import <Firebase/Firebase.h>

- (void)testGeneratePushId
{
    Firebase *ref = [[Firebase alloc] initWithUrl:@"INSERT SOME FIREBASE URL HERE"];
    
    NSMutableSet *set = [NSMutableSet set];
    NSMutableArray *pushIds = [NSMutableArray array];
    for (int i = 0; i < 100000; i++) {
        NSString *pushId = [ref childByAutoId].key;
        
        XCTAssert(![set containsObject:pushId], @"Duplicate key");
        
        XCTAssert(!(i > 0 && !([pushId compare:[pushIds lastObject]] == NSOrderedDescending)),@"Not monotonically increasing");
    
        [set addObject:pushId];
        [pushIds addObject:pushId];
    }
}