The Exterminator's Tool Belt: Finding and eliminating bugs without - - PowerPoint PPT Presentation

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The Exterminator's Tool Belt: Finding and eliminating bugs without - - PowerPoint PPT Presentation

Apr 26, 2023 176 likes •353 views

The Exterminator's Tool Belt: Finding and eliminating bugs without staying up all night Allen Shaw (TwoMice) allen@emphanos.com Emphanos LLC, Chicago, IL 1 2 3 4 5 6 7 8 9 10 Examples 1 2 3 4 5 6 7 8 9 10 Examples 1 2 3 4 5 6 7 8

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SLIDE 1

Allen Shaw (TwoMice) allen@emphanos.com Emphanos LLC, Chicago, IL

The Exterminator's Tool Belt:

Finding and eliminating bugs without staying up all night

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SLIDE 2

Examples

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SLIDE 3

Examples

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SLIDE 4

Examples

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SLIDE 5

Examples

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SLIDE 6

Best practices for debugging

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  • 1. Skepticism:
  • 2. Pessimism:
  • 3. Entitlement:
  • 4. Impatience:
  • 5. Laziness:
  • 6. Ruthlessness:
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SLIDE 7

Best practices for debugging

  • 1. Skepticism: There probably isn't a bug.
  • 2. Pessimism: It's probably the user's fault.
  • 3. Entitlement: Surely somebody fixed it already.
  • 4. Impatience: No time to keep testing this bug.
  • 5. Laziness: Do no more than necessary.
  • 6. Ruthlessness: Rip the code apart.

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SLIDE 8

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Tools for debugging

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SLIDE 9

http://bit. ly/civicrm-debug- settings

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  • Smarty variables:

&smartyDebug=1

  • Stack trace: &backtrace=1
  • Session variables:

&sessionDebug=1

  • CIVICRM_MAIL_LOG
  • CIVICRM_DEBUG_LOG_QUERY
  • CIVICRM_DAO_DEBUG

CiviCRM debug settings

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SLIDE 10

Firebug

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FireBug: Analyze DOM and network calls, analyze and execute JavaScript, all within the browser. Similar features available natively in Google Chrome.

http://getfirebug.com

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SLIDE 11

FirePHP

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FirePHP: Send debugging messages to Firebug from PHP.

http://firephp.org

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SLIDE 12

A good IDE helps.

  • NetBeans
  • Eclipse
  • Others?

Quickly navigate through unfamiliar code.

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SLIDE 13

Devel module (Drupal)

  • Easily examine

variables.

  • Limit output via

Drupal permissions.

http://drupal.org/project/devel

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SLIDE 14

Selenium IDE

  • Script the browser to

perform the steps necessary to replicate a bug.

  • Write regression tests

to ensure bugs stay gone.

http://seleniumhq.org

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SLIDE 15

Hands on...

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http://activities.civicon2013.localhost/ http://12269.civicon2013.localhost/ http://12014.civicon2013.localhost/

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SLIDE 16

Thank you, questions welcome.

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CiviCRM debug settings: http://bit.ly/civicrm-debug- settings Firebug: http://getfirebug.com FirePHP: http://firephp.org NetBeans: https://netbeans.org/ Eclipse: http://www.eclipse.org/ Devel module: http://drupal.org/project/devel Selnium: http://seleniumhq.org

Allen Shaw allen@emphanos.com Emphanos LLC, Chicago, IL