Selenium WebDriver Quick Start Guide

DataProviders in TestNG

DataProviders in TestNG are used when we need to iterate over objects. These can be objects created from Java that include complex objects, objects from a property file or database, or simple string objects. Whenever a dataProvider attribute is specified in a @Test annotation, and a method with the annotation @DataProvider exists, the data from this method is passed into the @Test annotated method as a two-dimensional object array.

Let's look at a small example, which is enhanced from our earlier example, where we extracted data into a list of HashMaps. Here we go a step further and read the list of HashMaps in a two-dimensional object array. The following code demonstrates this concept. The code has been split into ...