TestCacheRevalidatorBase.java

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 * to you under the Apache License, Version 2.0 (the
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package org.apache.hc.client5.http.impl.cache;

import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.util.concurrent.RejectedExecutionException;

import org.apache.hc.client5.http.schedule.SchedulingStrategy;
import org.apache.hc.core5.util.TimeValue;
import org.apache.hc.core5.util.Timeout;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.ArgumentMatchers;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

class TestCacheRevalidatorBase {

    @Mock
    private SchedulingStrategy mockSchedulingStrategy;
    @Mock
    private CacheRevalidatorBase.ScheduledExecutor mockScheduledExecutor;
    @Mock
    private Runnable mockOperation;

    private CacheRevalidatorBase impl;


    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        impl = new CacheRevalidatorBase(mockScheduledExecutor, mockSchedulingStrategy);
    }

    @Test
    void testRevalidateCacheEntrySchedulesExecutionAndPopulatesIdentifier() {
        when(mockSchedulingStrategy.schedule(ArgumentMatchers.anyInt())).thenReturn(TimeValue.ofSeconds(1));

        final String cacheKey = "blah";
        impl.scheduleRevalidation(cacheKey, mockOperation);

        verify(mockSchedulingStrategy).schedule(0);
        verify(mockScheduledExecutor).schedule(ArgumentMatchers.same(mockOperation), ArgumentMatchers.eq(TimeValue.ofSeconds(1)));

        Assertions.assertEquals(1, impl.getScheduledIdentifiers().size());
    }

    @Test
    void testMarkCompleteRemovesIdentifier() {
        when(mockSchedulingStrategy.schedule(ArgumentMatchers.anyInt())).thenReturn(TimeValue.ofSeconds(3));

        final String cacheKey = "blah";
        impl.scheduleRevalidation(cacheKey, mockOperation);

        verify(mockSchedulingStrategy).schedule(0);
        verify(mockScheduledExecutor).schedule(ArgumentMatchers.any(), ArgumentMatchers.eq(TimeValue.ofSeconds(3)));

        Assertions.assertEquals(1, impl.getScheduledIdentifiers().size());
        Assertions.assertTrue(impl.getScheduledIdentifiers().contains(cacheKey));

        impl.jobSuccessful(cacheKey);

        Assertions.assertEquals(0, impl.getScheduledIdentifiers().size());
    }

    @Test
    void testRevalidateCacheEntryDoesNotPopulateIdentifierOnRejectedExecutionException() {
        when(mockSchedulingStrategy.schedule(ArgumentMatchers.anyInt())).thenReturn(TimeValue.ofSeconds(2));
        doThrow(new RejectedExecutionException()).when(mockScheduledExecutor).schedule(ArgumentMatchers.any(), ArgumentMatchers.any());

        final String cacheKey = "blah";
        impl.scheduleRevalidation(cacheKey, mockOperation);

        Assertions.assertEquals(0, impl.getScheduledIdentifiers().size());
        verify(mockScheduledExecutor).schedule(ArgumentMatchers.any(), ArgumentMatchers.eq(TimeValue.ofSeconds(2)));
    }

    @Test
    void testRevalidateCacheEntryProperlyCollapsesRequest() {
        when(mockSchedulingStrategy.schedule(ArgumentMatchers.anyInt())).thenReturn(TimeValue.ofSeconds(2));

        final String cacheKey = "blah";
        impl.scheduleRevalidation(cacheKey, mockOperation);
        impl.scheduleRevalidation(cacheKey, mockOperation);
        impl.scheduleRevalidation(cacheKey, mockOperation);

        verify(mockSchedulingStrategy).schedule(ArgumentMatchers.anyInt());
        verify(mockScheduledExecutor).schedule(ArgumentMatchers.any(), ArgumentMatchers.eq(TimeValue.ofSeconds(2)));

        Assertions.assertEquals(1, impl.getScheduledIdentifiers().size());
    }

    @Test
    void testShutdown() throws Exception {
        impl.close();
        impl.awaitTermination(Timeout.ofMinutes(2));

        verify(mockScheduledExecutor).shutdown();
        verify(mockScheduledExecutor).awaitTermination(Timeout.ofMinutes(2));
    }

}