backends-common/rabbitmq/src/test/java/org/apache/james/backends/rabbitmq/RabbitMQHealthCheckTest.java

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package org.apache.james.backends.rabbitmq;

import static org.apache.james.backends.rabbitmq.RabbitMQExtension.IsolationPolicy.WEAK;
import static org.assertj.core.api.Assertions.assertThat;

import org.apache.james.core.healthcheck.Result;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;

class RabbitMQHealthCheckTest {

    @RegisterExtension
    static RabbitMQExtension rabbitMQExtension = RabbitMQExtension.singletonRabbitMQ()
        .isolationPolicy(WEAK);

    private RabbitMQHealthCheck healthCheck;

    @BeforeEach
    void setUp() {
        healthCheck = new RabbitMQHealthCheck(rabbitMQExtension.getConnectionPool(), rabbitMQExtension.getRabbitChannelPool());
    }

    @AfterEach
    void tearDown(DockerRabbitMQ rabbitMQ) throws Exception {
        rabbitMQ.reset();
    }

    @Test
    void checkShouldReturnHealthyWhenRabbitMQIsRunning() {
        Result check = healthCheck.check().block();

        assertThat(check.isHealthy()).isTrue();
    }

    @Test
    void checkShouldReturnHealthyWhenCalledSeveralTime() {
        healthCheck.check().block();
        healthCheck.check().block();
        healthCheck.check().block();
        healthCheck.check().block();
        healthCheck.check().block();
        healthCheck.check().block();
        healthCheck.check().block();
        Result check = healthCheck.check().block();

        assertThat(check.isHealthy()).isTrue();
    }

    @Test
    void checkShouldReturnUnhealthyWhenRabbitMQIsNotRunning(DockerRabbitMQ rabbitMQ) throws Exception {
        rabbitMQ.stopApp();

        Result check = healthCheck.check().block();

        assertThat(check.isHealthy()).isFalse();
    }

    @Test
    void checkShouldDetectWhenRabbitMQRecovered(DockerRabbitMQ rabbitMQ) throws Exception {
        rabbitMQ.stopApp();
        healthCheck.check().block();

        rabbitMQ.startApp();

        Result check = healthCheck.check().block();
        assertThat(check.isHealthy()).isTrue();
    }

    @Test
    void checkShouldDetectWhenRabbitMQFail(DockerRabbitMQ rabbitMQ) throws Exception {
        healthCheck.check().block();

        rabbitMQ.stopApp();

        Result check = healthCheck.check().block();
        assertThat(check.isHealthy()).isFalse();
    }
}