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small testing modification in core java

This commit is contained in:
eugenp 2014-09-30 20:53:33 +03:00
parent 28bc11e468
commit 3fd347537c
1 changed files with 17 additions and 14 deletions
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31
core-java/src/test/java/org/baeldung/java/io/TestWriter.java → core-java/src/test/java/org/baeldung/java/io/JavaWriteToFileTest.java
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@ -25,7 +25,7 @@ import java.nio.file.Paths;
import org.junit.Test; import org.junit.Test;
public class TestWriter { public class JavaWriteToFileTest {
private String fileName = "src/test/resources/test_write.txt"; private String fileName = "src/test/resources/test_write.txt";
private String fileName1 = "src/test/resources/test_write_1.txt"; private String fileName1 = "src/test/resources/test_write_1.txt";
@ -68,8 +68,10 @@ public class TestWriter {
outputStream.close(); outputStream.close();
} }
//
@Test @Test
public void whenWriteStringWithDataOutputStream_thenReadShouldBeTheSame() throws IOException { public void givenWritingToFile_whenUsingDataOutputStream_thenCorrect() throws IOException {
final String value = "Hello"; final String value = "Hello";
final FileOutputStream fos = new FileOutputStream(fileName1); final FileOutputStream fos = new FileOutputStream(fileName1);
final DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(fos)); final DataOutputStream outStream = new DataOutputStream(new BufferedOutputStream(fos));
@ -86,13 +88,13 @@ public class TestWriter {
} }
@Test @Test
public void whenWriteToPositionAndEditIt_thenItShouldChange() throws IOException { public void whenWritingToSpecificPositionInFile_thenCorrect() throws IOException {
final int data1 = 2014; final int data1 = 2014;
final int data2 = 1500; final int data2 = 1500;
testWriteToPosition(data1, 4); writeToPosition(fileName2, data1, 4);
assertEquals(data1, testReadFromPosition(4)); assertEquals(data1, readFromPosition(fileName2, 4));
testWriteToPosition(data2, 4); writeToPosition(fileName2, data2, 4);
assertEquals(data2, testReadFromPosition(4)); assertEquals(data2, readFromPosition(fileName2, 4));
} }
@Test @Test
@ -115,7 +117,7 @@ public class TestWriter {
} }
@Test @Test
public void whenWriteStringUsingFileChannel_thenReadShouldBeTheSame() throws IOException { public void givenWritingToFile_whenUsingFileChannel_thenCorrect() throws IOException {
final RandomAccessFile stream = new RandomAccessFile(fileName5, "rw"); final RandomAccessFile stream = new RandomAccessFile(fileName5, "rw");
final FileChannel channel = stream.getChannel(); final FileChannel channel = stream.getChannel();
final String value = "Hello"; final String value = "Hello";
@ -147,7 +149,7 @@ public class TestWriter {
} }
@Test @Test
public void whenWriteUsingJava7_thenCorrect() throws IOException { public void givenUsingJava7_whenWritingToFile_thenCorrect() throws IOException {
final String str = "Hello"; final String str = "Hello";
final Path path = Paths.get(fileName3); final Path path = Paths.get(fileName3);
@ -159,23 +161,24 @@ public class TestWriter {
assertEquals(str, read); assertEquals(str, read);
} }
// UTIL
// use RandomAccessFile to write data at specific position in the file // use RandomAccessFile to write data at specific position in the file
private void testWriteToPosition(final int data, final long position) throws IOException { private void writeToPosition(final String filename, final int data, final long position) throws IOException {
final RandomAccessFile writer = new RandomAccessFile(fileName2, "rw"); final RandomAccessFile writer = new RandomAccessFile(filename, "rw");
writer.seek(position); writer.seek(position);
writer.writeInt(data); writer.writeInt(data);
writer.close(); writer.close();
} }
// use RandomAccessFile to read data from specific position in the file // use RandomAccessFile to read data from specific position in the file
private int testReadFromPosition(final long position) throws IOException { private int readFromPosition(final String filename, final long position) throws IOException {
int result = 0; int result = 0;
final RandomAccessFile reader = new RandomAccessFile(fileName2, "r"); final RandomAccessFile reader = new RandomAccessFile(filename, "r");
reader.seek(position); reader.seek(position);
result = reader.readInt(); result = reader.readInt();
reader.close(); reader.close();
return result; return result;
} }
} }