pl.allegro.tech.servicemesh.envoycontrol.reliability.NoConsulLeaderTest.kt Maven / Gradle / Ivy

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package pl.allegro.tech.servicemesh.envoycontrol.reliability

import org.junit.jupiter.api.Test

internal class NoConsulLeaderTest : ReliabilityTest() {
    @Test
    fun `is resilient to consul cluster without a leader`() {
        // given
        registerService(name = "service-1")
        assertReachableThroughEnvoy("service-1")

        // when
        makeConsulClusterLoseLeader()
        assertConsulHasNoLeader()

        registerService(name = "service-2")

        // then
        holdAssertionsTrue {
            assertConsulHasNoLeader()
            assertReachableThroughEnvoy("service-1")
            assertUnreachableThroughEnvoy("service-2")
        }

        // when
        makeConsulClusterRegainLeader()

        // then
        assertConsulHasALeader()
        assertReachableThroughEnvoy("service-1")
        assertReachableThroughEnvoy("service-2")
    }

    private fun makeConsulClusterRegainLeader() {
        consulMastersInDc1.drop(1).forEach { consul ->
            consul.container.sigcont()
        }
    }

    private fun makeConsulClusterLoseLeader() {
        consulMastersInDc1.drop(1).forEach { consul ->
            consul.container.sigstop()
        }
    }
}