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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.util.cts;
     18 
     19 import static org.junit.Assert.assertEquals;
     20 
     21 import android.content.Context;
     22 import android.support.test.InstrumentationRegistry;
     23 import android.support.test.filters.SmallTest;
     24 import android.support.test.runner.AndroidJUnit4;
     25 import android.util.PrintWriterPrinter;
     26 
     27 import org.junit.After;
     28 import org.junit.Before;
     29 import org.junit.Test;
     30 import org.junit.runner.RunWith;
     31 
     32 import java.io.BufferedReader;
     33 import java.io.File;
     34 import java.io.FileInputStream;
     35 import java.io.FileNotFoundException;
     36 import java.io.IOException;
     37 import java.io.InputStream;
     38 import java.io.InputStreamReader;
     39 import java.io.PrintWriter;
     40 
     41 @SmallTest
     42 @RunWith(AndroidJUnit4.class)
     43 public class PrintWriterPrinterTest {
     44     private File mFile;
     45 
     46     @Before
     47     public void setup() throws IOException {
     48         File dbDir = InstrumentationRegistry.getTargetContext().getDir("tests",
     49                 Context.MODE_PRIVATE);
     50         mFile = new File(dbDir,"print.log");
     51         if (!mFile.exists()) {
     52             mFile.createNewFile();
     53         }
     54     }
     55 
     56     @After
     57     public void teardown() throws Exception {
     58         if (mFile.exists()) {
     59             mFile.delete();
     60         }
     61     }
     62 
     63     @Test
     64     public void testConstructor() throws FileNotFoundException {
     65         PrintWriter pw = new PrintWriter(mFile);
     66         new PrintWriterPrinter(pw);
     67     }
     68 
     69     @Test
     70     public void testPrintln() throws FileNotFoundException {
     71         String mMessage = "testMessage";
     72         PrintWriter pw = new PrintWriter(mFile);
     73         PrintWriterPrinter printWriterPrinter = new PrintWriterPrinter(pw);
     74         printWriterPrinter.println(mMessage);
     75         pw.flush();
     76         pw.close();
     77         String mLine = "";
     78         try {
     79             InputStream is = new FileInputStream(mFile);
     80             BufferedReader reader = new BufferedReader(
     81                     new InputStreamReader(is));
     82             mLine = reader.readLine();
     83         } catch (Exception e) {
     84         }
     85         assertEquals(mMessage, mLine);
     86     }
     87 }
     88 
     89