/*
 * ============LICENSE_START=======================================================
 * PNF-REGISTRATION-HANDLER
 * ================================================================================
 * Copyright (C) 2019 NOKIA Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.onap.dcaegen2.services.prh.integration;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.mockito.Mockito.doAnswer;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.jupiter.api.Test;
import org.mockito.stubbing.Answer;
import org.onap.dcaegen2.services.prh.tasks.ScheduledTasks;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import org.springframework.test.context.TestPropertySource;


@SpringBootTest
@TestPropertySource(properties = {"prh.workflow-scheduling-interval=20ms"})
class PrhWorkflowSchedulingIntegrationTest {

    private static final int EXPECTED_INVOCATIONS_NUMBER = 1;
    private static final int REMAINING_INVOCATIONS_NUMBER = 0;
    @MockBean
    private ScheduledTasks scheduledTasks;
    private CountDownLatch invocationLatch;

    @Test
    void prhWorkflowShouldBeExecutedRightAfterApplicationStart() throws InterruptedException {
        invocationLatch = new CountDownLatch(EXPECTED_INVOCATIONS_NUMBER);
        doAnswer(registerInvocation(invocationLatch)).when(scheduledTasks).scheduleMainPrhEventTask();
        assertThatMethodWasInvokedOnce();
    }

    private void assertThatMethodWasInvokedOnce() throws InterruptedException {
        invocationLatch.await(1, TimeUnit.SECONDS);
        assertEquals(REMAINING_INVOCATIONS_NUMBER, invocationLatch.getCount());
    }

    private static Answer registerInvocation(CountDownLatch invocationLatch) {
        return invocation -> {
            invocationLatch.countDown();
            return null;
        };
    }
}