Added instance method on unit test provider to clear events

AnalyticsKitUnitTestProvider.h

@@ -7,16 +7,19 @@
 //
 
 #import <Foundation/Foundation.h>
+#import "AnalyticsKit.h"
 #import "AnalyticsKitEvent.h"
 
 @interface AnalyticsKitUnitTestProvider : NSObject<AnalyticsKitProvider>
 
 @property(nonatomic,strong)NSMutableArray *events;
 
 + (AnalyticsKitUnitTestProvider *)setUp;
-+ (void)clearEvents; // also called by tearDown
 + (void)tearDown;
++ (AnalyticsKitUnitTestProvider *)unitTestProvider; // setup must be called first, returns the instance
++ (void)clearEvents; // also called by tearDown; does same thing as instance method
 
+- (void)clearEvents;
 - (BOOL)hasEventLoggedWithName:(NSString *)eventName;
 - (AnalyticsKitEvent *)firstEventLoggedWithName:(NSString *)eventName;
 - (NSArray *)eventsLoggedWithName:(NSString *)eventName;

AnalyticsKitUnitTestProvider.m

@@ -17,14 +17,18 @@ + (AnalyticsKitUnitTestProvider *)setUp {
     return provider;
 }
 
-+ (void)clearEvents {
-    // Remove the events stored in the unit test provider
++ (AnalyticsKitUnitTestProvider *)unitTestProvider {
+    AnalyticsKitUnitTestProvider *unitProvider = nil;
     NSArray *loggers = [AnalyticsKit loggers];
     for (AnalyticsKitUnitTestProvider *provider in loggers) {
-        if ([provider isKindOfClass:[AnalyticsKitUnitTestProvider class]]) {
-            provider.events = nil;
-        }
+        if ([provider isKindOfClass:[AnalyticsKitUnitTestProvider class]]) unitProvider = provider;
     }
+    return unitProvider;
+}
+
++ (void)clearEvents {
+    // Remove the events stored in the unit test provider
+    [[self unitTestProvider] clearEvents];
 }
 
 + (void)tearDown {
@@ -33,6 +37,10 @@ + (void)tearDown {
     [AnalyticsKit initialize];
 }
 
+- (void)clearEvents {
+    [self setEvents:[NSMutableArray arrayWithCapacity:20]];
+}
+
 - (BOOL)hasEventLoggedWithName:(NSString *)eventName {
     return [self firstEventLoggedWithName:eventName] != nil;
 }