Ben Cherry • 5/12/2010

Spying Constructors in JavaScript

This technical article explains the challenge of spying on JavaScript constructors in unit testing frameworks like JsMockito and Jasmine. It provides a custom implementation of a spy function that correctly handles constructors by preserving the prototype chain, along with a complementary verify function. The post includes code examples demonstrating the solution and its application in testing scenarios.

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#JavaScript #unit testing #mocking