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annotate src/tests/gov/nasa/jpf/test/java/io/FileIOTest.java @ 0:61d41facf527

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initial v8 import (history reset)
author Peter Mehlitz <Peter.C.Mehlitz@nasa.gov>
date Fri, 23 Jan 2015 10:14:01 -0800
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1 /*
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2 * Copyright (C) 2014, United States Government, as represented by the
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3 * Administrator of the National Aeronautics and Space Administration.
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4 * All rights reserved.
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5 *
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6 * The Java Pathfinder core (jpf-core) platform is licensed under the
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7 * Apache License, Version 2.0 (the "License"); you may not use this file except
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8 * in compliance with the License. You may obtain a copy of the License at
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9 *
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10 * http://www.apache.org/licenses/LICENSE-2.0.
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11 *
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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17 */
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18
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19 package gov.nasa.jpf.test.java.io;
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20
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21 import gov.nasa.jpf.util.test.TestJPF;
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22
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23 import java.io.BufferedReader;
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24 import java.io.File;
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25 import java.io.FileInputStream;
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26 import java.io.FileNotFoundException;
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27 import java.io.FileOutputStream;
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28 import java.io.IOException;
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29 import java.io.InputStreamReader;
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30 import java.io.OutputStreamWriter;
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31 import java.io.PrintWriter;
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32 import java.util.ArrayList;
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33 import java.util.Random;
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34
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35 import org.junit.Test;
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36
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37 /**
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38 * raw test for Writers, Readers, FileOutputStream and FileInputStream
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39 */
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40 public class FileIOTest extends TestJPF {
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41
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42 public static final String fname = "_test_";
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43
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44 @Test
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45 public void testRoundtrip() throws IOException, FileNotFoundException {
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46 if (verifyNoPropertyViolation()) {
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47 Random r = new Random(42);
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48 File file = new File(fname);
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49 String[] lines = {"one", "two", "three", "four", "five"};
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50
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51 //--- write part
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52 System.out.println("##---- writing: " + file.getName());
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53 FileOutputStream os = new FileOutputStream(file);
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54 OutputStreamWriter ow = new OutputStreamWriter(os);
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55 PrintWriter pw = new PrintWriter(ow);
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56 int a, b;
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57
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58 for (int i = 0; i < lines.length; i++) {
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59 pw.println(lines[i]);
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60 if (i == 2) {
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61 // add a CG here
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62 a = r.nextInt(1);
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63 System.out.println("## write got here: " + a);
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64 }
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65 }
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66
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67 pw.close();
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68 os.close(); // without this, Windows/Cygwin doesn't delete the file
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69
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70 System.out.println("##---- checking file system attributes");
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71
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72 assert file.exists() : "File.exits() failed on " + fname;
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73
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74 assert file.isFile() : "File.isFile() failed on " + fname;
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75
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76 assert !file.isDirectory() : "!File.isDirectory() failed on " + fname;
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77
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78 assert isInCurrentDirList(fname) : "dir list test failed on " + fname;
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79
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80
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81 //--- read part
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82 System.out.println("##---- reading: " + file.getName());
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83 ArrayList<String> contents = new ArrayList<String>();
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84 String line;
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85 FileInputStream is = new FileInputStream(file);
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86 InputStreamReader ir = new InputStreamReader(is);
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87 BufferedReader br = new BufferedReader(ir);
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88
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89 for (int i = 0; (line = br.readLine()) != null; i++) {
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90 if (i == 2) {
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91 b = r.nextInt(1);
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92 System.out.println("## read got here: " + b);
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93 }
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94 contents.add(line);
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95 }
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96
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97 br.close();
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98 is.close(); // without this, Windows/Cygwin doesn't delete the file
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99
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100 //--- check part
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101 System.out.println("##---- comparing");
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102 assert lines.length == contents.size() : "file length differs: " + lines.length + " / " + contents.size();
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103
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104 for (int i = 0; i < lines.length; i++) {
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105 assert lines[i].equals(contents.get(i)) : "line " + i + " differs, expected: \"" + lines[i] + "\", got: \"" + contents.get(i) + "\"";
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106 }
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107
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108
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109 if (file.delete()) {
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110 assert !file.exists() : "File.delete() failed (supposedly deleted but file exists) on " + fname;
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111 } else {
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112 assert false : "File.delete() failed to delete file (can happen on Windows/Cygwin)";
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113 }
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114
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115 System.out.println("##---- done");
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116 }
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117 }
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118
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119 private boolean isInCurrentDirList(String fn) {
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120 for (String s : new File(".").list()) {
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121 if (fn.equals(s)) {
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122 return true;
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123 }
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124 }
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125
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126 return false;
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127 }
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128 }