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Localization Testing

Localization Testing is a type of software testing that verifies an application's quality and functionality for a specific language, culture, and geographic region (a "locale"). Its purpose is to ensure that the user experience is seamless and natural for a target audience by checking that all elements — from text and date formats to currency and images — are culturally and linguistically appropriate. This is a critical step for any application being released to a global market.

Example: A company is launching a new application in both the U.S. and Europe. During localization testing, a quality assurance team would verify that the login feature works correctly for both regions. They would check:

  • Date Format: For a password reset form, they would confirm that the date is displayed as MM/DD/YYYY for a U.S. user and DD/MM/YYYY for a European user.
  • Error Messages: They would ensure that all error messages on the login page are displayed in the correct language (e.g., English for the U.S. and French for France).
  • Keyboard Layouts: They would verify that special characters needed for passwords in different languages can be entered correctly using regional keyboard layouts.