ParameterizedTest.md

How to use Approvals.verify in Parameterized Tests

Contents

• Introduction
• Sample Code

Introduction

By default, ApprovalTests generates one file per test. However, for @ParameterizedTests, this may not be the desired behavior when using Approvals.verify(object). The following section demonstrates how to generate multiple files for a single ParameterizedTest, where each file name includes the parameter name.

Sample Code

@ParameterizedTest
@ValueSource(strings = {"parameter1", "parameter2"})
void sampleParameterizedTest(String parameter)
{
  // your code goes here
  Object output = parameter;
  Approvals.verify(output, Approvals.NAMES.withParameters(parameter));
}

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This code sample ensures that the approved file includes the parameters. For example:
For example:

1. SamplesTest.sampleParameterizedTest.parameter1.approved.txt
2. SamplesTest.sampleParameterizedTest.parameter2.approved.txt

Note: As an alternative, consider using Approvals.verifyAll() in combination with @Test.