Test templates

A @TestTemplate method is not a regular test case but a template for test cases. Method annotated like this will be invoked multiple times, depending on the invocation context returned by the registered providers. Thus, test templates are used together with a registered TestTemplateInvocationContextProvider extension.

Let see a simple example of a test template. In the following snippet, we can see a method annotated with @TestTemplate, and also declaring an extension of the type MyTestTemplateInvocationContextProvider:

package io.github.bonigarcia;

import org.junit.jupiter.api.TestTemplate;
import org.junit.jupiter.api.extension.ExtendWith;

class TemplateTest {

    @TestTemplate
    @ExtendWith(MyTestTemplateInvocationContextProvider.class)
void testTemplate(String parameter) {
        System.out.println(parameter);
    }

}

The required provided implements the Jupiter interface TestTemplateInvocationContextProvider. Inspecting the code of this class, we can see how two String...