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added InputStream to String examples

This commit is contained in:
eugenp 2014-01-17 15:16:42 +02:00
parent 0f9fef5337
commit 52600ea3ab
1 changed files with 28 additions and 5 deletions
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33
core-java/src/test/java/org/baeldung/java/CoreJavaIoUnitTest.java
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@ -2,14 +2,17 @@ package org.baeldung.java;
import static org.apache.commons.lang3.RandomStringUtils.randomAlphabetic;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.StringWriter;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;
@ -24,12 +27,32 @@ import com.google.common.io.InputSupplier;
public class CoreJavaIoUnitTest {
protected final Logger logger = LoggerFactory.getLogger(getClass());
private static final int DEFAULT_SIZE = 150000000;
// private static final int DEFAULT_SIZE = 8;
// tests - InputStream to String
// 11s
@Test
public void givenUsingJava5_whenConvertingAnInputStreamToAString_thenCorrect() throws IOException {
final String originalString = randomAlphabetic(DEFAULT_SIZE);
final InputStream inputStream = new ByteArrayInputStream(originalString.getBytes());
final StringBuilder textBuilder = new StringBuilder();
try (Reader reader = new BufferedReader(new InputStreamReader(inputStream, Charset.forName(StandardCharsets.UTF_8.name())))) {
int c = 0;
while ((c = reader.read()) != -1) {
textBuilder.append((char) c);
}
}
assertEquals(textBuilder.toString(), originalString);
}
// 8s
@Test
public final void givenUsingJava7_whenConvertingAnInputStreamToAString_thenCorrect() throws IOException {
final String originalString = randomAlphabetic(8);
final String originalString = randomAlphabetic(DEFAULT_SIZE);
final InputStream inputStream = new ByteArrayInputStream(originalString.getBytes()); // exampleString.getBytes(StandardCharsets.UTF_8);
// When
@ -43,7 +66,7 @@ public class CoreJavaIoUnitTest {
@Test
public final void givenUsingGuava_whenConvertingAnInputStreamToAString_thenCorrect() throws IOException {
final String originalString = randomAlphabetic(8);
final String originalString = randomAlphabetic(DEFAULT_SIZE);
final InputStream inputStream = new ByteArrayInputStream(originalString.getBytes());
final InputSupplier<InputStream> inputSupplier = new InputSupplier<InputStream>() {
@ -62,7 +85,7 @@ public class CoreJavaIoUnitTest {
@Test
public final void givenUsingGuavaAndJava7_whenConvertingAnInputStreamToAString_thenCorrect() throws IOException {
final String originalString = randomAlphabetic(8);
final String originalString = randomAlphabetic(DEFAULT_SIZE);
final InputStream inputStream = new ByteArrayInputStream(originalString.getBytes());
// When
@ -76,7 +99,7 @@ public class CoreJavaIoUnitTest {
@Test
public final void givenUsingCommonsIo_whenConvertingAnInputStreamToAString_thenCorrect() throws IOException {
final String originalString = randomAlphabetic(8);
final String originalString = randomAlphabetic(DEFAULT_SIZE);
final InputStream inputStream = new ByteArrayInputStream(originalString.getBytes());
// When
@ -86,7 +109,7 @@ public class CoreJavaIoUnitTest {
@Test
public final void givenUsingCommonsIoWithCopy_whenConvertingAnInputStreamToAString_thenCorrect() throws IOException {
final String originalString = randomAlphabetic(8);
final String originalString = randomAlphabetic(DEFAULT_SIZE);
final InputStream inputStream = new ByteArrayInputStream(originalString.getBytes());
// When