test: add coverage for logscreen methods (#440)

* remove duplicate in protocol

* workaround for using mock executor

* switch nil check to empty check

* expose methods to be tested to swift

* fully covered logScreen methods

* removed nil check

* remove check for nil timestamp

MPEvent timestamp property is not an optional

* fully covered logScreenEvent method

* removed duplicated lines by pulling variables out

* pull dataPlanFilter to variable

* created function for recievedMessage check

* pull out exception to var

* final adjustments to clean up

* remove lazy vars

Co-Authored-By: denischilik <[email protected]>

---------

Co-authored-by: denischilik <[email protected]>

Author: nickolas-dimitrakas

UnitTests/MParticle+PrivateMethods.h

@@ -17,6 +17,9 @@
 - (void)logEvent:(MPBaseEvent *)event;
 - (void)logCustomEvent:(MPEvent *)event;
 - (void)logKitBatch:(NSString *)batch;
+- (void)logScreenEvent:(MPEvent *)event;
+- (void)logScreen:(NSString *)screenName eventInfo:(NSDictionary<NSString *, id> *)eventInfo;
+- (void)logScreen:(NSString *)screenName eventInfo:(NSDictionary<NSString *, id> *)eventInfo shouldUploadEvent:(BOOL)shouldUploadEvent;
 - (void)logScreenCallback:(MPEvent *)event execStatus:(MPExecStatus)execStatus;
 - (void)leaveBreadcrumbCallback:(MPEvent *)event execStatus:(MPExecStatus)execStatus;
 - (void)logErrorCallback:(NSDictionary<NSString *,id> * _Nullable)eventInfo execStatus:(MPExecStatus)execStatus message:(NSString *)message;