com.novoda.imageloader.core.service.CacheCleanerTest.java Source code

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Here is the source code for com.novoda.imageloader.core.service.CacheCleanerTest.java

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/**
 * Copyright 2012 Novoda Ltd
 *
 * 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.
 */
package com.novoda.imageloader.core.service;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.when;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mockito;

import android.content.Context;
import android.content.Intent;

import com.novoda.imageloader.core.Util;
import com.novoda.imageloader.core.service.CacheCleaner;
import com.novoda.imageloader.core.service.CacheCleaner.CacheCleanerUtil;

public class CacheCleanerTest {

    private static final long EXPIRATION_PERIOD = 1500L;
    private Context context;
    private File cacheDir;
    private CacheCleanerUtil cacheCleaner;
    private File testFile;
    private Intent intent;

    @Test
    public void SHOULD_cleanOldFiles_IF_reduceCacheActionIsSet() throws IOException {
        prepareTestFile(System.currentTimeMillis() - EXPIRATION_PERIOD);
        when(intent.hasExtra(CacheCleaner.EXPIRATION_PERIOD_EXTRA)).thenReturn(true);
        when(intent.getLongExtra(CacheCleaner.EXPIRATION_PERIOD_EXTRA, -1)).thenReturn(EXPIRATION_PERIOD);

        cacheCleaner.onReceive(context, intent);

        assertFalse(testFile.exists());
    }

    @Test
    public void SHOULD_notCleanNewFiles_WHIT_reduceAction() throws IOException {
        prepareTestFile();
        when(intent.hasExtra(CacheCleaner.EXPIRATION_PERIOD_EXTRA)).thenReturn(true);
        when(intent.getLongExtra(CacheCleaner.EXPIRATION_PERIOD_EXTRA, -1)).thenReturn(EXPIRATION_PERIOD);

        cacheCleaner.onReceive(context, intent);

        assertTrue(testFile.exists());
    }

    @Test
    public void SHOULD_cleanUpFilesOnly_IF_theActionIsSet() throws IOException {
        prepareTestFile(System.currentTimeMillis());
        when(intent.getAction()).thenReturn(null);

        cacheCleaner.onReceive(context, intent);

        assertTrue(testFile.exists());
    }

    @Test
    public void SHOULD_cleanUpFilesOnly_IF_theCorrectActionIsSet() throws IOException {
        prepareTestFile(System.currentTimeMillis());
        when(intent.getStringExtra(CacheCleaner.CACHE_DIR_EXTRA)).thenReturn("wrong action");

        cacheCleaner.onReceive(context, intent);

        assertTrue(testFile.exists());
    }

    @Test
    public void SHOULD_cleanAllFiles_IF_cleanCacheActionIsSet() throws IOException {
        prepareTestFile();

        cacheCleaner.onReceive(context, intent);

        assertFalse(testFile.exists());
    }

    @Test
    public void SHOULD_returnWithoutActions_IF_cacheExtraDirIsNull() {
        prepareTestFile();
        when(intent.getStringExtra(CacheCleaner.CACHE_DIR_EXTRA)).thenReturn(null);

        cacheCleaner.onReceive(context, intent);

        assertTrue(testFile.exists());
    }

    @Test
    public void SHOULD_returnWithoutActions_IF_cacheDirExtraIsEmpty() {
        prepareTestFile();
        when(intent.getStringExtra(CacheCleaner.CACHE_DIR_EXTRA)).thenReturn("");

        cacheCleaner.onReceive(context, intent);

        assertTrue(testFile.exists());
    }

    @Test
    public void SHOULD_returnWithoutActions_IF_cacheDirExtraIsNotSet() {
        prepareTestFile();
        when(intent.hasExtra(CacheCleaner.CACHE_DIR_EXTRA)).thenReturn(false);

        cacheCleaner.onReceive(context, intent);

        assertTrue(testFile.exists());
    }

    @Test
    public void SHOULD_notCrash_ON_IntentNull() {
        try {
            cacheCleaner.onReceive(context, null);
        } catch (Exception e) {
            fail("shouldn't fail on null intent");
        }
    }

    @Before
    public void setUp() {
        cacheDir = new File(Util.FOLDER_FOR_TEST_TMP_FILES);
        cacheDir.mkdir();
        cacheCleaner = new CacheCleanerUtil();
        intent = prepareStandardIntent();
    }

    @After
    public void tearDown() throws IOException {
        FileUtils.deleteDirectory(cacheDir);
    }

    private Intent prepareStandardIntent() {
        Intent i = Mockito.mock(Intent.class);
        when(i.getAction()).thenReturn(CacheCleaner.CLEAN_CACHE_ACTION);
        when(i.hasExtra(CacheCleaner.CACHE_DIR_EXTRA)).thenReturn(true);
        when(i.getStringExtra(CacheCleaner.CACHE_DIR_EXTRA)).thenReturn(cacheDir.getAbsolutePath());
        return i;
    }

    private void prepareTestFile() {
        prepareTestFile(System.currentTimeMillis());
    }

    private void prepareTestFile(long lastModified) {
        try {
            testFile = new File(cacheDir, "1.tmp");
            FileUtils.write(testFile, "test1");
            testFile.setLastModified(lastModified);
            assertTrue(testFile.exists());
        } catch (Exception e) {
            fail("Setup of the file for the test failed " + e.getMessage());
        }
    }

}