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Merge branch 'eugenp:master' into master

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This commit is contained in:
Zahid Khan
2023-05-04 19:55:08 +05:30
committed by GitHub
parent 7675b0c48d 8d0158aa5b
commit e68a846239
411 changed files with 5756 additions and 1508 deletions
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algorithms-modules/algorithms-miscellaneous-7/src/main/java/com/baeldung/algorithms/pixelarray/GetPixelArray.java
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package com.baeldung.algorithms.pixelarray;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
public class GetPixelArray {
public static int[][] get2DPixelArraySlow(BufferedImage sampleImage) {
int width = sampleImage.getWidth();
int height = sampleImage.getHeight();
int[][] result = new int[height][width];
for (int row = 0; row < height; row++) {
for (int col = 0; col < width; col++) {
result[row][col] = sampleImage.getRGB(col, row);
}
}
return result;
}
public static int[][] get2DPixelArrayFast(BufferedImage image) {
final byte[] pixelData = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
final int width = image.getWidth();
final int height = image.getHeight();
final boolean hasAlphaChannel = image.getAlphaRaster() != null;
int[][] result = new int[height][width];
if (hasAlphaChannel) {
final int numberOfValues = 4;
for (int valueIndex = 0, row = 0, col = 0; valueIndex + numberOfValues - 1 < pixelData.length; valueIndex += numberOfValues) {
// Getting the values for each pixel from the pixelData array.
int argb = 0;
argb += (((int) pixelData[valueIndex] & 0xff) << 24); // alpha value
argb += ((int) pixelData[valueIndex + 1] & 0xff); // blue value
argb += (((int) pixelData[valueIndex + 2] & 0xff) << 8); // green value
argb += (((int) pixelData[valueIndex + 3] & 0xff) << 16); // red value
result[row][col] = argb;
col++;
if (col == width) {
col = 0;
row++;
}
}
} else {
final int numberOfValues = 3;
for (int valueIndex = 0, row = 0, col = 0; valueIndex + numberOfValues - 1 < pixelData.length; valueIndex += numberOfValues) {
int argb = 0;
argb += -16777216; // 255 alpha value (fully opaque)
argb += ((int) pixelData[valueIndex] & 0xff); // blue value
argb += (((int) pixelData[valueIndex + 1] & 0xff) << 8); // green value
argb += (((int) pixelData[valueIndex + 2] & 0xff) << 16); // red value
result[row][col] = argb;
col++;
if (col == width) {
col = 0;
row++;
}
}
}
return result;
}
}
algorithms-modules/algorithms-miscellaneous-7/src/test/java/com/baeldung/algorithms/pixelarray/GetPixelArrayUnitTest.java
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package com.baeldung.algorithms.pixelarray;
import static com.baeldung.algorithms.pixelarray.GetPixelArray.get2DPixelArrayFast;
import static com.baeldung.algorithms.pixelarray.GetPixelArray.get2DPixelArraySlow;
import static org.junit.Assert.*;
import org.junit.Test;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
public class GetPixelArrayUnitTest {
@Test
public void givenImage_whenGetPixelArray_thenBothMethodsReturnEqualValues() {
BufferedImage sampleImage = null;
try {
sampleImage = ImageIO.read(new File("src/main/resources/images/sampleImage.jpg"));
} catch (IOException e) {
throw new RuntimeException(e);
}
int[][] firstResult = get2DPixelArraySlow(sampleImage);
int[][] secondResult = get2DPixelArrayFast(sampleImage);
assertTrue(Arrays.deepEquals(firstResult, secondResult));
}
}
apache-httpclient-2/README.md
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@@ -13,4 +13,5 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
- [How To Get Cookies From the Apache HttpClient Response](https://www.baeldung.com/java-apache-httpclient-cookies)
- [Enabling Logging for Apache HttpClient](https://www.baeldung.com/apache-httpclient-enable-logging)
- [Apache HttpClient vs. CloseableHttpClient](https://www.baeldung.com/apache-httpclient-vs-closeablehttpclient)
- [Expand Shortened URLs with Apache HttpClient](https://www.baeldung.com/apache-httpclient-expand-url)
- More articles: [[<-- prev]](../apache-httpclient)
apache-httpclient-2/src/test/java/com/baeldung/httpclient/expandUrl/HttpClientExpandUrlLiveTest.java
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package com.baeldung.httpclient.expandUrl;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import java.io.IOException;
import java.util.List;
import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import org.apache.commons.lang3.tuple.ImmutablePair;
import org.apache.commons.lang3.tuple.Pair;
import org.apache.hc.client5.http.classic.methods.HttpHead;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClientBuilder;
import org.apache.hc.core5.http.Header;
import org.apache.hc.core5.http.HttpHeaders;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
class HttpClientExpandUrlLiveTest {
private static CloseableHttpClient httpClient;
@BeforeAll
static void setup() {
httpClient = HttpClientBuilder.create()
.disableRedirectHandling()
.build();
}
@AfterAll
static void tearDown() throws IOException {
if (httpClient != null) {
httpClient.close();
}
}
@Test
void givenShortenedOnce_whenUrlIsExpanded_thenCorrectResult() throws IOException {
final String expectedResult = "https://www.baeldung.com/rest-versioning";
final String actualResult = expandSingleLevel("http://bit.ly/3LScTri");
assertThat(actualResult, equalTo(expectedResult));
}
@Test
void givenShortenedMultiple_whenUrlIsExpanded_thenCorrectResult() throws IOException {
final String expectedResult = "https://www.baeldung.com/rest-versioning";
final String actualResult = expand("http://t.co/e4rDDbnzmk");
assertThat(actualResult, equalTo(expectedResult));
}
private String expand(final String urlArg) throws IOException {
String originalUrl = urlArg;
String newUrl = expandSingleLevel(originalUrl);
while (!originalUrl.equals(newUrl)) {
originalUrl = newUrl;
newUrl = expandSingleLevel(originalUrl);
}
return newUrl;
}
final String expandSafe(final String urlArg) throws IOException {
String originalUrl = urlArg;
String newUrl = expandSingleLevelSafe(originalUrl).getRight();
final List<String> alreadyVisited = Lists.newArrayList(originalUrl, newUrl);
while (!originalUrl.equals(newUrl)) {
originalUrl = newUrl;
final Pair<Integer, String> statusAndUrl = expandSingleLevelSafe(originalUrl);
newUrl = statusAndUrl.getRight();
final boolean isRedirect = statusAndUrl.getLeft() == 301 || statusAndUrl.getLeft() == 302;
if (isRedirect && alreadyVisited.contains(newUrl)) {
throw new IllegalStateException("Likely a redirect loop");
}
alreadyVisited.add(newUrl);
}
return newUrl;
}
private Pair<Integer, String> expandSingleLevelSafe(final String url) throws IOException {
try {
HttpHead request = new HttpHead(url);
Pair<Integer, String> resp = httpClient.execute(request, response -> {
final int statusCode = response.getCode();
if (statusCode != 301 && statusCode != 302) {
return new ImmutablePair<>(statusCode, url);
}
final Header[] headers = response.getHeaders(HttpHeaders.LOCATION);
Preconditions.checkState(headers.length == 1);
final String newUrl = headers[0].getValue();
return new ImmutablePair<>(statusCode, newUrl);
});
return resp;
} catch (final IllegalArgumentException uriEx) {
return new ImmutablePair<>(500, url);
}
}
private String expandSingleLevel(final String url) throws IOException {
try {
HttpHead request = new HttpHead(url);
String expandedUrl = httpClient.execute(request, response -> {
final int statusCode = response.getCode();
if (statusCode != 301 && statusCode != 302) {
return url;
}
final Header[] headers = response.getHeaders(HttpHeaders.LOCATION);
Preconditions.checkState(headers.length == 1);
return headers[0].getValue();
});
return expandedUrl;
} catch (final IllegalArgumentException uriEx) {
return url;
}
}
}
aws-modules/aws-lambda-modules/lambda-function/pom.xml
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@@ -3,9 +3,9 @@
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>lambda</artifactId>
<artifactId>lambda-function</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>lambda</name>
<name>lambda-function</name>
<packaging>jar</packaging>
<parent>
aws-modules/aws-s3/README.md
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@@ -6,4 +6,5 @@ This module contains articles about Simple Storage Service (S3) on AWS
- [AWS S3 with Java](https://www.baeldung.com/aws-s3-java)
- [Multipart Uploads in Amazon S3 with Java](https://www.baeldung.com/aws-s3-multipart-upload)
- [Using the JetS3t Java Client With Amazon S3](https://www.baeldung.com/jets3t-amazon-s3)
- [Using the JetS3t Java Client With Amazon S3](https://www.baeldung.com/jets3t-amazon-s3)
- [Check if a Specified Key Exists in a Given S3 Bucket Using Java](https://www.baeldung.com/java-aws-s3-check-specified-key-exists)
core-java-modules/core-java-19/README.md
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@@ -1,3 +1,4 @@
## Relevant Articles
- [Record Patterns in Java 19](https://www.baeldung.com/java-19-record-patterns)
- [Structured Concurrency in Java 19](https://www.baeldung.com/java-structured-concurrency)
- [Possible Root Causes for High CPU Usage in Java](https://www.baeldung.com/java-high-cpu-usage-causes)
core-java-modules/core-java-20/README.md
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@@ -0,0 +1,2 @@
## Relevant Articles
- TBD
core-java-modules/core-java-20/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.baeldung.core-java-modules</groupId>
<artifactId>core-java-modules</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>core-java-20</artifactId>
<properties>
<maven.compiler.source>20</maven.compiler.source>
<maven.compiler.target>20</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>20</source>
<target>20</target>
<compilerArgs>
<arg>--enable-preview</arg>
<arg>--add-modules=jdk.incubator.concurrent</arg>
</compilerArgs>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<argLine>--enable-preview --add-modules=jdk.incubator.concurrent</argLine>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>jakarta.servlet</groupId>
<artifactId>jakarta.servlet-api</artifactId>
<version>6.0.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>3.24.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-junit-jupiter</artifactId>
<version>5.2.0</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/classic/Controller.java
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package com.baeldung.scopedvalues.classic;
import com.baeldung.scopedvalues.data.Data;
import com.baeldung.scopedvalues.data.User;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Optional;
public class Controller {
private final Service service = new Service();
public void processRequest(HttpServletRequest request, HttpServletResponse response, User loggedInUser) {
Optional<Data> data = service.getData(request, loggedInUser);
if (data.isPresent()) {
try {
PrintWriter out = response.getWriter();
response.setContentType("application/json");
out.print(data.get());
out.flush();
response.setStatus(200);
} catch (IOException e) {
response.setStatus(500);
}
} else {
response.setStatus(400);
}
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/classic/Repository.java
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package com.baeldung.scopedvalues.classic;
import com.baeldung.scopedvalues.data.Data;
import com.baeldung.scopedvalues.data.User;
import java.util.Optional;
public class Repository {
public Optional<Data> getData(String id, User user) {
return user.isAdmin()
? Optional.of(new Data(id, "Title 1", "Description 1"))
: Optional.empty();
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/classic/Server.java
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package com.baeldung.scopedvalues.classic;
import com.baeldung.scopedvalues.data.User;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.util.List;
import java.util.Optional;
import java.util.concurrent.*;
public class Server {
private static final List<User> AUTHENTICATED_USERS = List.of(
new User("1", "admin", "123456", true),
new User("2", "user", "123456", false)
);
private final Controller controller = new Controller();
private final ExecutorService executor = Executors.newFixedThreadPool(5);
public void serve(HttpServletRequest request, HttpServletResponse response) throws InterruptedException, ExecutionException {
Optional<User> user = authenticateUser(request);
if (user.isPresent()) {
Future<?> future = executor.submit(() ->
controller.processRequest(request, response, user.get()));
future.get();
} else {
response.setStatus(401);
}
}
private Optional<User> authenticateUser(HttpServletRequest request) {
return AUTHENTICATED_USERS.stream()
.filter(user -> checkUserPassword(user, request))
.findFirst();
}
private boolean checkUserPassword(User user, HttpServletRequest request) {
return user.name().equals(request.getParameter("user_name"))
&& user.password().equals(request.getParameter("user_pw"));
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/classic/Service.java
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package com.baeldung.scopedvalues.classic;
import com.baeldung.scopedvalues.data.Data;
import com.baeldung.scopedvalues.data.User;
import jakarta.servlet.http.HttpServletRequest;
import java.util.Optional;
public class Service {
private final Repository repository = new Repository();
public Optional<Data> getData(HttpServletRequest request, User loggedInUser) {
String id = request.getParameter("data_id");
return repository.getData(id, loggedInUser);
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/data/Data.java
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package com.baeldung.scopedvalues.data;
public record Data(String id, String title, String description) {}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/data/User.java
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package com.baeldung.scopedvalues.data;
public record User(String id, String name, String password, boolean isAdmin) {}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/Controller.java
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package com.baeldung.scopedvalues.scoped;
import com.baeldung.scopedvalues.data.Data;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jdk.incubator.concurrent.ScopedValue;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Optional;
public class Controller {
private final Service internalService = new Service();
public void processRequest(HttpServletRequest request, HttpServletResponse response) {
Optional<Data> data = internalService.getData(request);
ScopedValue.where(Server.LOGGED_IN_USER, null)
.run(internalService::extractData);
if (data.isPresent()) {
try {
PrintWriter out = response.getWriter();
response.setContentType("application/json");
out.print(data.get());
out.flush();
response.setStatus(200);
} catch (IOException e) {
response.setStatus(500);
}
} else {
response.setStatus(400);
}
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/Repository.java
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package com.baeldung.scopedvalues.scoped;
import com.baeldung.scopedvalues.data.Data;
import com.baeldung.scopedvalues.data.User;
import java.util.Optional;
public class Repository {
public Optional<Data> getData(String id) {
User loggedInUser = Server.LOGGED_IN_USER.get();
return loggedInUser.isAdmin()
? Optional.of(new Data(id, "Title 1", "Description 1"))
: Optional.empty();
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/Server.java
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package com.baeldung.scopedvalues.scoped;
import com.baeldung.scopedvalues.data.User;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jdk.incubator.concurrent.ScopedValue;
import java.util.List;
import java.util.Optional;
public class Server {
private static final List<User> AUTHENTICATED_USERS = List.of(
new User("1", "admin", "123456", true),
new User("2", "user", "123456", false)
);
public final static ScopedValue<User> LOGGED_IN_USER = ScopedValue.newInstance();
private final Controller controller = new Controller();
public void serve(HttpServletRequest request, HttpServletResponse response) {
Optional<User> user = authenticateUser(request);
if (user.isPresent()) {
ScopedValue.where(LOGGED_IN_USER, user.get())
.run(() -> controller.processRequest(request, response));
} else {
response.setStatus(401);
}
}
private Optional<User> authenticateUser(HttpServletRequest request) {
return AUTHENTICATED_USERS.stream()
.filter(user -> checkUserPassword(user, request))
.findFirst();
}
private boolean checkUserPassword(User user, HttpServletRequest request) {
return user.name().equals(request.getParameter("user_name"))
&& user.password().equals(request.getParameter("user_pw"));
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/Service.java
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package com.baeldung.scopedvalues.scoped;
import com.baeldung.scopedvalues.data.Data;
import com.baeldung.scopedvalues.data.User;
import jakarta.servlet.http.HttpServletRequest;
import java.util.Optional;
public class Service {
private final Repository repository = new Repository();
public Optional<Data> getData(HttpServletRequest request) {
String id = request.getParameter("data_id");
return repository.getData(id);
}
public void extractData() {
User loggedInUser = Server.LOGGED_IN_USER.get();
assert loggedInUser == null;
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/inheriting/Controller.java
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package com.baeldung.scopedvalues.scoped.inheriting;
import com.baeldung.scopedvalues.data.Data;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jdk.incubator.concurrent.StructuredTaskScope;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Optional;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
public class Controller {
private final InternalService internalService = new InternalService();
private final ExternalService externalService = new ExternalService();
public void processRequest(HttpServletRequest request, HttpServletResponse response) {
try (var scope = new StructuredTaskScope.ShutdownOnFailure()) {
Future<Optional<Data>> internalData = scope.fork(() -> internalService.getData(request));
Future<String> externalData = scope.fork(externalService::getData);
try {
scope.join();
scope.throwIfFailed();
Optional<Data> data = internalData.resultNow();
if (data.isPresent()) {
PrintWriter out = response.getWriter();
response.setContentType("application/json");
out.println(data.get());
out.print(externalData.resultNow());
out.flush();
response.setStatus(200);
} else {
response.setStatus(400);
}
} catch (InterruptedException | ExecutionException | IOException e) {
response.setStatus(500);
}
}
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/inheriting/ExternalService.java
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package com.baeldung.scopedvalues.scoped.inheriting;
public class ExternalService {
public String getData() {
return "External data";
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/inheriting/InternalService.java
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package com.baeldung.scopedvalues.scoped.inheriting;
import com.baeldung.scopedvalues.data.Data;
import jakarta.servlet.http.HttpServletRequest;
import java.util.Optional;
public class InternalService {
private final Repository repository = new Repository();
public Optional<Data> getData(HttpServletRequest request) {
String id = request.getParameter("data_id");
return repository.getData(id);
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/inheriting/Repository.java
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package com.baeldung.scopedvalues.scoped.inheriting;
import com.baeldung.scopedvalues.data.Data;
import com.baeldung.scopedvalues.data.User;
import java.util.Optional;
public class Repository {
public Optional<Data> getData(String id) {
User loggedInUser = Server.LOGGED_IN_USER.get();
return loggedInUser.isAdmin()
? Optional.of(new Data(id, "Title 1", "Description 1"))
: Optional.empty();
}
}
core-java-modules/core-java-20/src/main/java/com/baeldung/scopedvalues/scoped/inheriting/Server.java
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package com.baeldung.scopedvalues.scoped.inheriting;
import com.baeldung.scopedvalues.data.User;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jdk.incubator.concurrent.ScopedValue;
import java.util.List;
import java.util.Optional;
public class Server {
private static final List<User> AUTHENTICATED_USERS = List.of(
new User("1", "admin", "123456", true),
new User("2", "user", "123456", false)
);
public final static ScopedValue<User> LOGGED_IN_USER = ScopedValue.newInstance();
private final Controller controller = new Controller();
public void serve(HttpServletRequest request, HttpServletResponse response) {
Optional<User> user = authenticateUser(request);
if (user.isPresent()) {
ScopedValue.where(LOGGED_IN_USER, user.get())
.run(() -> controller.processRequest(request, response));
} else {
response.setStatus(401);
}
}
private Optional<User> authenticateUser(HttpServletRequest request) {
return AUTHENTICATED_USERS.stream()
.filter(user -> checkUserPassword(user, request))
.findFirst();
}
private boolean checkUserPassword(User user, HttpServletRequest request) {
return user.name().equals(request.getParameter("user_name"))
&& user.password().equals(request.getParameter("user_pw"));
}
}
core-java-modules/core-java-20/src/test/java/com/baeldung/scopedvalues/classic/ServerUnitTest.java
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package com.baeldung.scopedvalues.classic;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.concurrent.ExecutionException;
import static org.mockito.Mockito.*;
import static org.assertj.core.api.Assertions.*;
@ExtendWith(MockitoExtension.class)
public class ServerUnitTest {
@Mock
private HttpServletRequest request;
@Mock
private HttpServletResponse response;
private final StringWriter writer = new StringWriter();
private final Server server = new Server();
@Test
void givenMockedRequestWithAdminCredentials_whenServeMethodIsCalled_thenDataIsReturned() throws InterruptedException, IOException, ExecutionException {
when(request.getParameter("user_name")).thenReturn("admin");
when(request.getParameter("user_pw")).thenReturn("123456");
when(request.getParameter("data_id")).thenReturn("1");
when(response.getWriter()).thenReturn(new PrintWriter(writer));
server.serve(request, response);
assertThat(writer.toString()).isEqualTo("Data[id=1, title=Title 1, description=Description 1]");
}
@Test
void givenMockedRequestWithUserCredentials_whenServeMethodIsCalled_thenNoDataIsReturned() throws InterruptedException, ExecutionException {
when(request.getParameter("user_name")).thenReturn("user");
when(request.getParameter("user_pw")).thenReturn("123456");
server.serve(request, response);
assertThat(writer.toString()).isEqualTo("");
}
}
core-java-modules/core-java-20/src/test/java/com/baeldung/scopedvalues/scoped/ServerUnitTest.java
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@@ -0,0 +1,52 @@
package com.baeldung.scopedvalues.scoped;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.when;
@ExtendWith(MockitoExtension.class)
public class ServerUnitTest {
@Mock
private HttpServletRequest request;
@Mock
private HttpServletResponse response;
private final StringWriter writer = new StringWriter();
private final Server server = new Server();
@Test
void givenMockedRequestWithAdminCredentials_whenServeMethodIsCalled_thenDataIsReturned() throws IOException {
when(request.getParameter("user_name")).thenReturn("admin");
when(request.getParameter("user_pw")).thenReturn("123456");
when(request.getParameter("data_id")).thenReturn("1");
when(response.getWriter()).thenReturn(new PrintWriter(writer));
server.serve(request, response);
assertThat(writer.toString()).isEqualTo("Data[id=1, title=Title 1, description=Description 1]");
}
@Test
void givenMockedRequestWithUserCredentials_whenServeMethodIsCalled_thenNoDataIsReturned() throws IOException {
when(request.getParameter("user_name")).thenReturn("user");
when(request.getParameter("user_pw")).thenReturn("123456");
server.serve(request, response);
assertThat(writer.toString()).isEqualTo("");
}
}
core-java-modules/core-java-20/src/test/java/com/baeldung/scopedvalues/scoped/inheriting/ServerUnitTest.java
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@@ -0,0 +1,52 @@
package com.baeldung.scopedvalues.scoped.inheriting;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.when;
@ExtendWith(MockitoExtension.class)
public class ServerUnitTest {
@Mock
private HttpServletRequest request;
@Mock
private HttpServletResponse response;
private final StringWriter writer = new StringWriter();
private final Server server = new Server();
@Test
void givenMockedRequestWithAdminCredentials_whenServeMethodIsCalled_thenDataIsReturned() throws IOException {
when(request.getParameter("user_name")).thenReturn("admin");
when(request.getParameter("user_pw")).thenReturn("123456");
when(request.getParameter("data_id")).thenReturn("1");
when(response.getWriter()).thenReturn(new PrintWriter(writer));
server.serve(request, response);
assertThat(writer.toString()).isEqualTo("Data[id=1, title=Title 1, description=Description 1]\nExternal data");
}
@Test
void givenMockedRequestWithUserCredentials_whenServeMethodIsCalled_thenNoDataIsReturned() throws IOException {
when(request.getParameter("user_name")).thenReturn("user");
when(request.getParameter("user_pw")).thenReturn("123456");
server.serve(request, response);
assertThat(writer.toString()).isEqualTo("");
}
}
core-java-modules/core-java-8-2/README.md
+1
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@@ -11,5 +11,6 @@ This module contains articles about Java 8 core features
- [Convert Between Byte Array and UUID in Java](https://www.baeldung.com/java-byte-array-to-uuid)
- [Create a Simple “Rock-Paper-Scissors” Game in Java](https://www.baeldung.com/java-rock-paper-scissors)
- [VarArgs vs Array Input Parameters in Java](https://www.baeldung.com/varargs-vs-array)
- [Lambda Expression vs. Anonymous Inner Class](https://www.baeldung.com/java-lambdas-vs-anonymous-class)
- [Java Helper vs. Utility Classes](https://www.baeldung.com/java-helper-vs-utility-classes)
- [[<-- Prev]](/core-java-modules/core-java-8)
core-java-modules/core-java-lambdas/src/main/java/com/baeldung/anonymousclass/AnonymousClassExample.java → core-java-modules/core-java-8-2/src/main/java/com/baeldung/anonymousclass/AnonymousClassExample.java
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core-java-modules/core-java-lambdas/src/main/java/com/baeldung/lambdaexpression/LambdaExpressionExample.java → core-java-modules/core-java-8-2/src/main/java/com/baeldung/lambdaexpression/LambdaExpressionExample.java
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