Modify test methods

core-java/src/test/java/org/baeldung/java/io/TestWriter.java

@@ -3,20 +3,16 @@ package test;
 import java.io.BufferedOutputStream;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
-import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.io.PrintWriter;
 import java.io.RandomAccessFile;
 import java.nio.ByteBuffer;
 import java.nio.channels.FileChannel;
 import java.nio.channels.FileLock;
-
-import main.Foo;
+import java.nio.channels.OverlappingFileLockException;
 import junit.framework.TestCase;
 
 public class TestWriter extends TestCase {
@@ -24,7 +20,6 @@ public class TestWriter extends TestCase {
     private String fileName = "test.txt";
     private String fileName1 = "test1.txt";
     private String fileName2 = "test2.txt";
-    private String fileName3 = "test3.txt";
     private String fileName4 = "test4.txt";
     private String fileName5 = "test5.txt";
 
@@ -40,14 +35,14 @@ public class TestWriter extends TestCase {
         super.tearDown();
     }
     
-    public void testWriteFormattedStringUsingPrintWriter() throws IOException{
+    public void whenWriteFormattedStringUsingPrintWriter_thenOutputShouldBeFormatted() throws IOException{
         FileWriter fileWriter = new FileWriter(fileName);
         PrintWriter printWriter = new PrintWriter(fileWriter);
         printWriter.printf("Product name is %s and its price is %d $","iPhone",1000);
         printWriter.close();
     }
 
-    public void testWriteStringWithDataOutputStream_thenReadIt_shouldBeTheSame() throws IOException {
+    public void whenWriteStringWithDataOutputStream_thenReadShouldBeTheSame() throws IOException {
         String value = "Hello";
         FileOutputStream fos = new FileOutputStream(fileName1);
         DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(fos));
@@ -63,7 +58,7 @@ public class TestWriter extends TestCase {
         assertEquals(value, result);
     }
 
-    public void testWriteToPosition_editValueIfSpecificPos_shouldChange() {
+    public void whenWriteToPositionAndEditIt_thenItShouldChange() {
         int data1 = 2014;
         int data2 = 1500;
         testWriteToPosition(data1, 4);
@@ -72,28 +67,18 @@ public class TestWriter extends TestCase {
         assertEquals(data2, testReadFromPosition(4));
     }
 
-    public void testWriteObject_thenReadIt_instanceVariableValuesShouldBeTheSame() throws Exception {
-        Foo foo = new Foo(1, "John");
-        FileOutputStream fos = new FileOutputStream(fileName3);
-        ObjectOutputStream writer = new ObjectOutputStream(fos);
-        writer.writeObject(foo);
-        writer.close();
-        Foo result = null;
 
-        FileInputStream fis = new FileInputStream(fileName3);
-        ObjectInputStream reader = new ObjectInputStream(fis);
-        result = (Foo) reader.readObject();
-        reader.close();
-
-        assertEquals(foo.getId(), result.getId());
-        assertEquals(foo.getName(), result.getName());
-    }
-
-    public void testFileLock() throws IOException {
+    public void whenTryToLockFile_thenItShouldBeLocked() throws IOException {
         RandomAccessFile stream = new RandomAccessFile(fileName4, "rw");
         FileChannel channel = stream.getChannel();
 
-        FileLock lock = channel.tryLock();
+        FileLock lock = null;
+        try {
+            lock = channel.tryLock();
+        } catch (OverlappingFileLockException e) {
+            stream.close();
+            channel.close();
+        }
         stream.writeChars("test lock");
         lock.release();
         
@@ -102,15 +87,8 @@ public class TestWriter extends TestCase {
     }
 
     
-    public void testCreateFile_thenCheckIfItExists_thenDeleteAndCheckIfExist() throws IOException{
-        File file = new File("test_create.txt");
-        file.createNewFile();
-        assertTrue(file.exists());
-        file.delete();
-        assertFalse(file.exists());
-    }
     
-    public void testWriteStringUsingFileChannel() throws IOException{
+    public void whenWriteStringUsingFileChannel_thenReadShouldBeTheSame() throws IOException{
         RandomAccessFile stream = new RandomAccessFile(fileName5, "rw");
         FileChannel channel = stream.getChannel();
         String value = "Hello";