Debugging and Testing

Software Development Best Practices

Debugging and Testing Best Practices for Beginners

Learn debugging and testing best practices for beginners with practical examples, tools, workflows, and FAQs to write reliable code.

Debugging and Testing Best Practices for Beginners

Debugging and testing are two of the most important skills every programmer must learn, yet they are often overlooked by beginners. Many new developers focus only on writing code and feel frustrated when programs do not work as expected. In reality, finding and fixing bugs and testing code properly are what transform average programmers into confident professionals. This comprehensive beginner-friendly guide explains debugging and testing best practices in a clear and practical way. You will learn how to identify errors, understand why bugs occur, fix them efficiently, and prevent future issues using testing techniques. No matter which programming language you use, the principles in this article will help you write cleaner, more reliable, and more maintainable code. What Is Debugging? Debugging is the process of finding, analyzing, and fixing errors (bugs) in a program. A bug is any behavior in a program that produces incorrect or unexpected results. Bugs can appear for many reasons…

About the author

Prasun Barua is a graduate engineer in Electrical and Electronic Engineering with a passion for simplifying complex technical concepts for learners and professionals alike. He has authored numerous highly regarded books covering a wide range of elec…

Post a Comment

<script type="text/javascript" src="https://www.blogger.com/static/v1/widgets/1350801215-widgets.js"></script>
<script type='text/javascript'>
window['__wavt'] = 'AOuZoY51vDevH39IDR8frV5JyEGSORzl-g:1767948573723';_WidgetManager._Init('//www.blogger.com/rearrange?blogID\x3d783982260310473034','//codebasedlearning.blogspot.com/2026/01/debugging-and-testing-best-practices.html?amp\x3d1','783982260310473034');
_WidgetManager._SetDataContext([{'name': 'blog', 'data': {'blogId': '783982260310473034', 'title': 'CodeBasedLearning', 'url': 'https://codebasedlearning.blogspot.com/2026/01/debugging-and-testing-best-practices.html?amp\x3d1', 'canonicalUrl': 'https://codebasedlearning.blogspot.com/2026/01/debugging-and-testing-best-practices.html', 'homepageUrl': 'https://codebasedlearning.blogspot.com/?amp\x3d1', 'searchUrl': 'https://codebasedlearning.blogspot.com/search', 'canonicalHomepageUrl': 'https://codebasedlearning.blogspot.com/', 'blogspotFaviconUrl': 'https://codebasedlearning.blogspot.com/favicon.ico', 'bloggerUrl': 'https://www.blogger.com', 'hasCustomDomain': false, 'httpsEnabled': true, 'enabledCommentProfileImages': true, 'gPlusViewType': 'FILTERED_POSTMOD', 'adultContent': false, 'analyticsAccountNumber': 'G-5BQ2KCPGE5', 'analytics4': true, 'encoding': 'UTF-8', 'locale': 'en', 'localeUnderscoreDelimited': 'en', 'languageDirection': 'ltr', 'isPrivate': false, 'isMobile': false, 'isMobileRequest': false, 'mobileClass': '', 'isPrivateBlog': false, 'isDynamicViewsAvailable': true, 'feedLinks': '\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22CodeBasedLearning - Atom\x22 href\x3d\x22https://codebasedlearning.blogspot.com/feeds/posts/default\x22 /\x3e\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/rss+xml\x22 title\x3d\x22CodeBasedLearning - RSS\x22 href\x3d\x22https://codebasedlearning.blogspot.com/feeds/posts/default?alt\x3drss\x22 /\x3e\n\x3clink rel\x3d\x22service.post\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22CodeBasedLearning - Atom\x22 href\x3d\x22https://www.blogger.com/feeds/783982260310473034/posts/default\x22 /\x3e\n\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22CodeBasedLearning - Atom\x22 href\x3d\x22https://codebasedlearning.blogspot.com/feeds/899378424624899735/comments/default\x22 /\x3e\n', 'meTag': '', 'adsenseClientId': 'ca-pub-8736637194399168', 'adsenseHostId': 'ca-host-pub-1556223355139109', 'adsenseHasAds': true, 'adsenseAutoAds': true, 'boqCommentIframeForm': true, 'loginRedirectParam': '', 'view': '', 'dynamicViewsCommentsSrc': '//www.blogblog.com/dynamicviews/4224c15c4e7c9321/js/comments.js', 'dynamicViewsScriptSrc': '//www.blogblog.com/dynamicviews/617ee3b89bd337b4', 'plusOneApiSrc': 'https://apis.google.com/js/platform.js', 'disableGComments': true, 'interstitialAccepted': false, 'sharing': {'platforms': [{'name': 'Get link', 'key': 'link', 'shareMessage': 'Get link', 'target': ''}, {'name': 'Facebook', 'key': 'facebook', 'shareMessage': 'Share to Facebook', 'target': 'facebook'}, {'name': 'BlogThis!', 'key': 'blogThis', 'shareMessage': 'BlogThis!', 'target': 'blog'}, {'name': 'X', 'key': 'twitter', 'shareMessage': 'Share to X', 'target': 'twitter'}, {'name': 'Pinterest', 'key': 'pinterest', 'shareMessage': 'Share to Pinterest', 'target': 'pinterest'}, {'name': 'Email', 'key': 'email', 'shareMessage': 'Email', 'target': 'email'}], 'disableGooglePlus': true, 'googlePlusShareButtonWidth': 0, 'googlePlusBootstrap': '\x3cscript type\x3d\x22text/javascript\x22\x3ewindow.___gcfg \x3d {\x27lang\x27: \x27en\x27};\x3c/script\x3e'}, 'hasCustomJumpLinkMessage': false, 'jumpLinkMessage': 'Read more', 'pageType': 'item', 'postId': '899378424624899735', 'postImageThumbnailUrl': 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDGmLiC_7tlSQsRZzDgeX50sE4f2f7SeeCaxkU_Hcsx6Y-pq7eFEC3h1b8C_JDORKAuIIcIDfpqjJdRo2MCfp3RUs2Jp52JlXECFeOlowxc7eWPWdRXK31GyAyV08mIeOizr6FtUSKHGLAmCogbblu4yhspYxviv8e6Z08Pc8NgyTuEpavXLLu_rpyVhA/s72-w640-c-h426/Debugging%20and%20Testing%20Best%20Practices%20for%20Beginners.png', 'postImageUrl': 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDGmLiC_7tlSQsRZzDgeX50sE4f2f7SeeCaxkU_Hcsx6Y-pq7eFEC3h1b8C_JDORKAuIIcIDfpqjJdRo2MCfp3RUs2Jp52JlXECFeOlowxc7eWPWdRXK31GyAyV08mIeOizr6FtUSKHGLAmCogbblu4yhspYxviv8e6Z08Pc8NgyTuEpavXLLu_rpyVhA/w640-h426/Debugging%20and%20Testing%20Best%20Practices%20for%20Beginners.png', 'pageName': 'Debugging and Testing Best Practices for Beginners', 'pageTitle': 'CodeBasedLearning: Debugging and Testing Best Practices for Beginners', 'metaDescription': 'Learn debugging and testing best practices for beginners with practical examples, tools, workflows, and FAQs to write reliable code.'}}, {'name': 'features', 'data': {}}, {'name': 'messages', 'data': {'edit': 'Edit', 'linkCopiedToClipboard': 'Link copied to clipboard!', 'ok': 'Ok', 'postLink': 'Post Link'}}, {'name': 'template', 'data': {'name': 'custom', 'localizedName': 'Custom', 'isResponsive': true, 'isAlternateRendering': false, 'isCustom': true}}, {'name': 'view', 'data': {'classic': {'name': 'classic', 'url': '?view\x3dclassic'}, 'flipcard': {'name': 'flipcard', 'url': '?view\x3dflipcard'}, 'magazine': {'name': 'magazine', 'url': '?view\x3dmagazine'}, 'mosaic': {'name': 'mosaic', 'url': '?view\x3dmosaic'}, 'sidebar': {'name': 'sidebar', 'url': '?view\x3dsidebar'}, 'snapshot': {'name': 'snapshot', 'url': '?view\x3dsnapshot'}, 'timeslide': {'name': 'timeslide', 'url': '?view\x3dtimeslide'}, 'isMobile': false, 'title': 'Debugging and Testing Best Practices for Beginners', 'description': 'Learn debugging and testing best practices for beginners with practical examples, tools, workflows, and FAQs to write reliable code.', 'featuredImage': 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDGmLiC_7tlSQsRZzDgeX50sE4f2f7SeeCaxkU_Hcsx6Y-pq7eFEC3h1b8C_JDORKAuIIcIDfpqjJdRo2MCfp3RUs2Jp52JlXECFeOlowxc7eWPWdRXK31GyAyV08mIeOizr6FtUSKHGLAmCogbblu4yhspYxviv8e6Z08Pc8NgyTuEpavXLLu_rpyVhA/w640-h426/Debugging%20and%20Testing%20Best%20Practices%20for%20Beginners.png', 'url': 'https://codebasedlearning.blogspot.com/2026/01/debugging-and-testing-best-practices.html?amp\x3d1', 'type': 'item', 'isSingleItem': true, 'isMultipleItems': false, 'isError': false, 'isPage': false, 'isPost': true, 'isHomepage': false, 'isArchive': false, 'isLabelSearch': false, 'postId': 899378424624899735}}, {'name': 'widgets', 'data': [{'title': 'CodeBasedLearning (Header)', 'type': 'Header', 'sectionId': 'sec_Header_Title', 'id': 'Header01'}, {'title': 'Looking for something?', 'type': 'BlogSearch', 'sectionId': 'sec_Header_Search', 'id': 'BlogSearch01'}, {'title': 'Header Icon', 'type': 'TextList', 'sectionId': 'sec_Header_Icon', 'id': 'TextList01'}, {'title': '', 'type': 'Profile', 'sectionId': 'sec_Header_Icon', 'id': 'Profile01'}, {'title': 'Bookmark Posts', 'type': 'LinkList', 'sectionId': 'sec_Header_Icon', 'id': 'LinkList02'}, {'title': 'Translate', 'type': 'LinkList', 'sectionId': 'sec_Header_Icon', 'id': 'LinkList03'}, {'title': 'Navigation Menu (Simple)', 'type': 'PageList', 'sectionId': 'sec_Nav_Widgets_1', 'id': 'PageList01'}, {'title': 'Tabbed Menu', 'type': 'LinkList', 'sectionId': 'sec_Under_Header', 'id': 'LinkList05'}, {'title': 'Blog Posts', 'type': 'Blog', 'sectionId': 'sec_Main_Widgets', 'id': 'Blog01', 'posts': [{'id': '899378424624899735', 'title': 'Debugging and Testing Best Practices for Beginners', 'featuredImage': 'https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiDGmLiC_7tlSQsRZzDgeX50sE4f2f7SeeCaxkU_Hcsx6Y-pq7eFEC3h1b8C_JDORKAuIIcIDfpqjJdRo2MCfp3RUs2Jp52JlXECFeOlowxc7eWPWdRXK31GyAyV08mIeOizr6FtUSKHGLAmCogbblu4yhspYxviv8e6Z08Pc8NgyTuEpavXLLu_rpyVhA/w640-h426/Debugging%20and%20Testing%20Best%20Practices%20for%20Beginners.png', 'showInlineAds': false}], 'footerBylines': [{'regionName': 'footer1', 'items': [{'name': 'author', 'label': 'Published by'}, {'name': 'timestamp', 'label': 'On'}, {'name': 'comments', 'label': 'Comment'}, {'name': 'share', 'label': ''}]}, {'regionName': 'footer2', 'items': [{'name': 'labels', 'label': 'in'}]}, {'regionName': 'footer3', 'items': [{'name': 'location', 'label': 'Location:'}]}], 'allBylineItems': [{'name': 'author', 'label': 'Published by'}, {'name': 'timestamp', 'label': 'On'}, {'name': 'comments', 'label': 'Comment'}, {'name': 'share', 'label': ''}, {'name': 'labels', 'label': 'in'}, {'name': 'location', 'label': 'Location:'}]}, {'title': 'Table of contents', 'type': 'HTML', 'sectionId': 'sec_Main_Widgets', 'id': 'HTML11'}, {'title': 'Popular Posts', 'type': 'PopularPosts', 'sectionId': 'sec_Side_Widgets', 'id': 'PopularPosts01', 'posts': [{'title': 'Arrays, Linked Lists, and Stacks: Step-by-Step Guide', 'id': 2019187514981557623}, {'title': 'Full Stack Project: Build Your First Complete Web App', 'id': 5639918434059481043}, {'title': 'Node.js for Beginners: Build Your First Server', 'id': 566075566058085243}, {'title': 'Express.js Crash Course: Create Simple APIs', 'id': 6265781702850757180}, {'title': 'Introduction to Object-Oriented Design Patterns', 'id': 3357785997720663062}]}, {'title': 'Labels', 'type': 'Label', 'sectionId': 'sec_Side_Widgets', 'id': 'Label01'}, {'title': 'Take me back', 'type': 'HTML', 'sectionId': 'sec_Error_404', 'id': 'HTML404'}, {'title': 'Organization [BlogTitle]', 'type': 'Image', 'sectionId': 'sec_Footer_Organization', 'id': 'Image21'}, {'title': 'Social Media Links', 'type': 'LinkList', 'sectionId': 'sec_Footer_Organization', 'id': 'LinkList21'}, {'title': 'Explore', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets', 'id': 'LinkList22'}, {'title': 'Resources', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets', 'id': 'LinkList23'}, {'title': 'About', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets', 'id': 'LinkList24'}, {'title': 'Contact', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets', 'id': 'LinkList25'}, {'title': 'Credit', 'type': 'HTML', 'sectionId': 'sec_Footer_Bottom', 'id': 'HTML21'}, {'title': 'Mobile Menu', 'type': 'TextList', 'sectionId': 'sec_Mobile_Menu', 'id': 'TextList99'}, {'title': 'Labels', 'type': 'Label', 'sectionId': 'sec_Theme_Hidden', 'id': 'Label41'}, {'title': 'Contact Form', 'type': 'ContactForm', 'sectionId': 'sec_Theme_Hidden', 'id': 'ContactForm41'}, {'title': 'Pageviews last month', 'type': 'Stats', 'sectionId': 'sec_Theme_Hidden', 'id': 'Stats41'}, {'title': 'Cookie Consent [NoTitle]', 'type': 'LinkList', 'sectionId': 'sec_Addon_Widgets', 'id': 'LinkList63'}, {'title': 'Image Uploader', 'type': 'Image', 'sectionId': 'sec_Addon_Widgets', 'id': 'Image61'}]}]);
_WidgetManager._RegisterWidget('_HeaderView', new _WidgetInfo('Header01', 'sec_Header_Title', document.getElementById('Header01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogSearchView', new _WidgetInfo('BlogSearch01', 'sec_Header_Search', document.getElementById('BlogSearch01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_TextListView', new _WidgetInfo('TextList01', 'sec_Header_Icon', document.getElementById('TextList01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ProfileView', new _WidgetInfo('Profile01', 'sec_Header_Icon', document.getElementById('Profile01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList02', 'sec_Header_Icon', document.getElementById('LinkList02'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList03', 'sec_Header_Icon', document.getElementById('LinkList03'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_PageListView', new _WidgetInfo('PageList01', 'sec_Nav_Widgets_1', document.getElementById('PageList01'), {'title': 'Navigation Menu (Simple)', 'links': [{'isCurrentPage': false, 'href': 'https://codebasedlearning.blogspot.com/', 'id': '0', 'title': 'Home'}, {'isCurrentPage': false, 'href': 'https://codebasedlearning.blogspot.com/p/about.html?amp\x3d1', 'id': '4217905049079589132', 'title': 'About'}, {'isCurrentPage': false, 'href': 'https://codebasedlearning.blogspot.com/p/blog-archive.html?amp\x3d1', 'id': '1803455201297024433', 'title': 'Archive'}, {'isCurrentPage': false, 'href': 'https://codebasedlearning.blogspot.com/p/sitemap.html?amp\x3d1', 'id': '6263315405299467720', 'title': 'Sitemap'}, {'isCurrentPage': false, 'href': 'https://codebasedlearning.blogspot.com/p/contact.html?amp\x3d1', 'id': '3781406919496669891', 'title': 'Contact'}], 'mobile': false, 'showPlaceholder': true, 'hasCurrentPage': false}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList05', 'sec_Under_Header', document.getElementById('LinkList05'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogView', new _WidgetInfo('Blog01', 'sec_Main_Widgets', document.getElementById('Blog01'), {'cmtInteractionsEnabled': false, 'lightboxEnabled': true, 'lightboxModuleUrl': 'https://www.blogger.com/static/v1/jsbin/2485970545-lbx.js', 'lightboxCssUrl': 'https://www.blogger.com/static/v1/v-css/828616780-lightbox_bundle.css'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML11', 'sec_Main_Widgets', document.getElementById('HTML11'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_PopularPostsView', new _WidgetInfo('PopularPosts01', 'sec_Side_Widgets', document.getElementById('PopularPosts01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label01', 'sec_Side_Widgets', document.getElementById('Label01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML404', 'sec_Error_404', document.getElementById('HTML404'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image21', 'sec_Footer_Organization', document.getElementById('Image21'), {'resize': false}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList21', 'sec_Footer_Organization', document.getElementById('LinkList21'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList22', 'sec_Footer_Widgets', document.getElementById('LinkList22'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList23', 'sec_Footer_Widgets', document.getElementById('LinkList23'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList24', 'sec_Footer_Widgets', document.getElementById('LinkList24'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList25', 'sec_Footer_Widgets', document.getElementById('LinkList25'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML21', 'sec_Footer_Bottom', document.getElementById('HTML21'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_TextListView', new _WidgetInfo('TextList99', 'sec_Mobile_Menu', document.getElementById('TextList99'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label41', 'sec_Theme_Hidden', document.getElementById('Label41'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ContactFormView', new _WidgetInfo('ContactForm41', 'sec_Theme_Hidden', document.getElementById('ContactForm41'), {'contactFormMessageSendingMsg': 'Sending...', 'contactFormMessageSentMsg': 'Your message has been sent.', 'contactFormMessageNotSentMsg': 'Message could not be sent. Please try again later.', 'contactFormInvalidEmailMsg': 'A valid email address is required.', 'contactFormEmptyMessageMsg': 'Message field cannot be empty.', 'title': 'Contact Form', 'blogId': '783982260310473034', 'contactFormNameMsg': 'Name', 'contactFormEmailMsg': 'Email', 'contactFormMessageMsg': 'Message', 'contactFormSendMsg': 'Send', 'contactFormToken': 'AOuZoY77nrUsEQ7RH9sPJiiuATOAB72Mng:1767948573723', 'submitUrl': 'https://www.blogger.com/contact-form.do'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_StatsView', new _WidgetInfo('Stats41', 'sec_Theme_Hidden', document.getElementById('Stats41'), {'title': 'Pageviews last month', 'showGraphicalCounter': false, 'showAnimatedCounter': false, 'showSparkline': true, 'statsUrl': '//codebasedlearning.blogspot.com/b/stats?amp\x3d1\x26style\x3dBLACK_TRANSPARENT\x26timeRange\x3dLAST_WEEK\x26token\x3dAPq4FmDojVMm2fZd-t567q-B2EqptQMKqQbgfzcNh7Ba88tLcxtxcdqJfGdZaLHtcDkD5c6T5bhjVX8C4b3yrmWaJ8Hgdn-nIA'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList63', 'sec_Addon_Widgets', document.getElementById('LinkList63'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image61', 'sec_Addon_Widgets', document.getElementById('Image61'), {'resize': false}, 'displayModeFull'));
</script>
</body>