types of computer bugs

 

Arithmetic bugs

Logic bugs

Syntax bugs

  • Use of the wrong operator, such as performing assignment instead of equality test. For example, in some languages x=5 will set the value of x to 5 while x==5 will check whether x is currently 5 or some other number. In simple cases often warned by the compiler; in many languages, deliberately guarded against by language syntax

Resource bugs

Multi-threading programming bugs

Interfacing bugs

  • Incorrect API usage
  • Incorrect protocol implementation
  • Incorrect hardware handling

Performance bugs

Teamworking bugs

  • Unpropagated updates; e.g. programmer changes "myAdd" but forgets to change "mySubtract", which uses the same algorithm. These errors are mitigated by the Don't Repeat Yourself philosophy.
  • Comments out of date or incorrect: many programmers assume the comments accurately describe the code
  • Differences between documentation and the actual product

 

Software Testing Types:



Black box testing – Internal system design is not considered in this type of testing. Tests are based on requirements and functionality.
White box testing – This testing is based on knowledge of the internal logic of an application’s code. Also known as Glass box Testing. Internal software and code working should be known for this type of testing. Tests are based on coverage of code statements, branches, paths, conditions.
Unit testing – Testing of individual software components or modules. Typically done by the programmer and not by testers, as it requires detailed knowledge of the internal program design and code. may require developing test driver modules or test harnesses.
Incremental integration testing – Bottom up approach for testing i.e continuous testing of an application as new functionality is added; Application functionality and modules should be independent enough to test separately. done by programmers or by testers.
Integration testing – Testing of integrated modules to verify combined functionality after integration. Modules are typically code modules, individual applications, client and server applications on a network, etc. This type of testing is especially relevant to client/server and distributed systems.
Functional testing – This type of testing ignores the internal parts and focus on the output is as per requirement or not. Black-box type testing geared to functional requirements of an application.
System testing – Entire system is tested as per the requirements. Black-box type testing that is based on overall requirements specifications, covers all combined parts of a system.
End-to-end testing – Similar to system testing, involves testing of a complete application environment in a situation that mimics real-world use, such as interacting with a database, using network communications, or interacting with other hardware, applications, or systems if appropriate.
Sanity testing - Testing to determine if a new software version is performing well enough to accept it for a major testing effort. If application is crashing for initial use then system is not stable enough for further testing and build or application is assigned to fix.
Regression testing – Testing the application as a whole for the modification in any module or functionality. Difficult to cover all the system in regression testing so typically automation tools are used for these testing types.
Acceptance testing -Normally this type of testing is done to verify if system meets the customer specified requirements. User or customer do this testing to determine whether to accept application.
Load testing – Its a performance testing to check system behavior under load. Testing an application under heavy loads, such as testing of a web site under a range of loads to determine at what point the system’s response time degrades or fails.
Stress testing – System is stressed beyond its specifications to check how and when it fails. Performed under heavy load like putting large number beyond storage capacity, complex database queries, continuous input to system or database load.
Performance testing – Term often used interchangeably with ‘stress’ and ‘load’ testing. To check whether system meets performance requirements. Used different performance and load tools to do this.
Usability testing – User-friendliness check. Application flow is tested, Can new user understand the application easily, Proper help documented whenever user stuck at any point. Basically system navigation is checked in this testing.
Install/uninstall testing - Tested for full, partial, or upgrade install/uninstall processes on different operating systems under different hardware, software environment.
Recovery testing – Testing how well a system recovers from crashes, hardware failures, or other catastrophic problems.
Security testing – Can system be penetrated by any hacking way. Testing how well the system protects against unauthorized internal or external access. Checked if system, database is safe from external attacks.
Compatibility testing – Testing how well software performs in a particular hardware/software/operating system/network environment and different combination s of above.
Comparison testing – Comparison of product strengths and weaknesses with previous versions or other similar products.
Alpha testing – In house virtual user environment can be created for this type of testing. Testing is done at the end of development. Still minor design changes may be made as a result of such testing.
Beta testing – Testing typically done by end-users or others. Final testing before releasing application for commercial purpose.

APPLICATION ERROR

Welcome to Kernel Manager Manager

This site is for Kernel Developers only. Users and testers need not apply.


If you are looking for the Kernel Manager App, it is available in the Android Market.
Click here for the free version. Click here for the paid version.

Warning: You should disable the default 'administrator' account or change its password.

Warning: Admin directory should be removed.

This is probably not the site you are looking for!
You attempted to reach  but instead you actually reached a server identifying itself as *.hrn9.com. This may be caused by a misconfiguration on the server or by something more serious. An attacker on your network could be trying to get you to visit a fake (and potentially harmful) version of www.windrolinx.com.
You should not proceed, especially if you have never seen this warning before for this site.

Mantis:
APPLICATION ERROR #1200

Invalid e-mail address.

Please use the "Back" button in your web browser to return to the previous page. There you can correct whatever problems were identified in this error or select another action. You can also click an option from the menu bar to go directly to a new section.

Blog

  
    Only premium members can send inquiries to "Want To Buy Interested In Procuring Handheld Terminals....!"
To learn more about our Premium Memberships click here


A network error occurred while sending your login request. Please try again. If this condition persists, contact your network service provider.

Blog has been removed

Sorry, the blog at greenchilliesgc.blogspot.com has been removed. This address is not available for new blogs.

Did you expect to see your blog here? See: 'I can't find my blog on the web, where is it?'

Anti-Virus

Kaspersky Internet Security 2012 Access denied The requested URL cannot be provided URL: http://load.keygendb.net/crack/download. php?p=bmFtZT1Td2lzaC1tYXgtNCZ0eXBlPXNlcm lhbCtrZXlzK2dlbiZpZD1Td2lzaC1tYXgtNCZjb3 VudHJ5PTA=&h=cf52af56a07ef073b5f93aeea6d 1918e Blocked by Web Anti-Virus Reason: malicious link Click here if you think the web page has been blocked incorrectly. Message generated: 5:01:55 AM **Warning** Scene=Scene 1, layer=Layer 17, frame=30:Line 12: Case-insensitive identifier 'string' will obscure built-in object 'String'. string = "Complete eBisuness Solutions"; Total ActionScript Errors: 1 Reported Errors: 1 http://torrentz.eu/sw/swishmax+4+with+serial+key-q "This website/URL has been blocked until further notice either pursuant to Court orders or on the Directions issued by the Department of Telecommunications"

My Famous Blog List