TYPES OF SOFTWARE ERRORS:
This topic helps us to easily identifying the errors and to increase the system performance and efficiency of the software testing.
User Interface Errors:
Software doesn’t do what the user expects, misleading,Inappropriate error messages
Inadequate - protection against corrupted data, tests of user input,.
Error recovery – aborting errors, recovery from hardware problems.
Boundary related errors:
these errors ars produced due to mishandling the cases in outside the boundary.
Calculation errors are appear when we are using bad Logic, bad Arithmetic, outdated constants, ncorrect conversion from one data representation to another, wrong formula, incorrect approximation.
Initial and Later states:
Incorrect initialization in intial stage-
e.g: Failure to - set data item to zero
Control flow errors:
Wrong returning state assumed, Exception handling based exits, Stack underflow/overflow, Failure to block or un-block interrupts, Comparison sometimes yields wrong result, Missing/wrong default, Data Type errors.
Messages cross or don't arrive in the order sent.
Required resources are not available, No available large memory area, Low priority tasks not put off, Doesn't erase old files from mass storage, Doesn't return unused memory.
Hardware: Wrong Device,
Device unavailable, ,
Misunderstood status or return code,
Wrong operation or instruction codes.
Failure to notice/report a problem, Failure to use the most promising test case, Corrupted data files, Misinterpreted specifications or documentation, Failure to make it clear how to reproduce the problem, Failure to check for unresolved problems just before release, Failure to verify fixes, Failure to provide summary report.