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/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * 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.android.test.runner;

import android.content.Context;

import com.android.test.InjectContext;
import com.android.test.runner.ClassPathScanner.ExcludePackageNameFilter;
import com.android.test.runner.ClassPathScanner.ExternalClassNameFilter;
import com.android.test.runner.ClassPathScanner.InclusivePackageNameFilter;

import dalvik.system.DexFile;

import junit.framework.Assert;

import org.junit.Before;
import org.junit.Test;

import java.io.IOException;
import java.util.Enumeration;
import java.util.Set;
import java.util.Vector;

/**
 * Unit tests for {@link ClassPathScanner}.
 */
public class ClassPathScannerTest {

    private ClassPathScanner mClassPathScanner;
    private Enumeration<String> mDexEntries;

    @InjectContext
    public Context mContext;

    @Before
    public void setUp() throws Exception {
        mClassPathScanner = new ClassPathScanner(mContext.getPackageCodePath()) {
            @Override
            Enumeration<String> getDexEntries(DexFile dexFile) {
                return mDexEntries;
            }
        };
    }

    @Test
    public void externalClassNameFilter() throws IOException {
        mDexEntries = createEntries("com.example.MyName",
                "com.example.MyName$Inner");
        Set<String> result = mClassPathScanner.getClassPathEntries(new ExternalClassNameFilter());
        Assert.assertEquals(1, result.size());
        Assert.assertTrue(result.contains("com.example.MyName"));
    }

    @Test
    public void inclusivePackageNameFilter() throws IOException {
        mDexEntries = createEntries("com.example.MyName",
                "com.exclude.Excluded", "com.example2.MyName");
        Set<String> result = mClassPathScanner.getClassPathEntries(new InclusivePackageNameFilter(
                "com.example"));
        Assert.assertEquals(1, result.size());
        Assert.assertTrue(result.contains("com.example.MyName"));
    }

    @Test
    public void exclusivePackageNameFilter() throws IOException {
        mDexEntries = createEntries("com.example.MyName",
                "com.exclude.Excluded", "com.exclude2.Excluded");
        Set<String> result = mClassPathScanner.getClassPathEntries(new ExcludePackageNameFilter(
                "com.exclude"));
        Assert.assertEquals(2, result.size());
        Assert.assertTrue(result.contains("com.example.MyName"));
        Assert.assertTrue(result.contains("com.exclude2.Excluded"));
    }

    private Enumeration<String> createEntries(String... entries) {
        Vector<String> v = new Vector<String>(entries.length);
        for (String entry : entries) {
            v.add(entry);
        }
        return v.elements();
    }
}