jameskennard / slf4j-junit

slf4j-junit

[](https://codecov.io/github/jameskennard/slf4j-junit)

slf4j-junit enables verification of logging made with SLF4J.

Getting Started

We create a normal JUnit test, and we add a JUnit TestRule in order to enable the verification of logging within the test.

import org.junit.Rule;
import static uk.co.webamoeba.slf4j.junit.LogVerification.enableLogging;
public class SomeTest {
@Rule
public EnableLogging enableLogging = enableLogging();

}

We can now create a test, and verify that some logging has taken place:

import static uk.co.webamoeba.slf4j.junit.LogVerification.verifyLogger;
import static uk.co.webamoeba.slf4j.junit.log.Level.INFO;
...
public void shouldDoSomething() {
// Given
String someArgument = "Hello everyone!";
// When
something.doSomething(someArgument);

// Then
verifyLogger(Something.class).logged(INFO, "I saw the 'Hello everyone!'");

}