[BAEL-9555] - Created a core-java-modules folder
This commit is contained in:
amit2103
@@ -0,0 +1,38 @@
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package com.baeldung;
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import junit.framework.Test;
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import junit.framework.TestCase;
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import junit.framework.TestSuite;
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/**
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* Unit test for simple App.
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*/
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public class AppTest
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extends TestCase
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{
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/**
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* Create the test case
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*
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* @param testName name of the test case
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*/
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public AppTest( String testName )
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{
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super( testName );
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}
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/**
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* @return the suite of tests being tested
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*/
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public static Test suite()
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{
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return new TestSuite( AppTest.class );
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}
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/**
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* Rigourous Test :-)
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*/
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public void testApp()
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{
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assertTrue( true );
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}
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}
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@@ -0,0 +1,32 @@
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package com.baeldung;
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import com.google.common.base.Strings;
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import org.junit.Assert;
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import org.junit.Test;
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import java.util.Optional;
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import java.util.function.Predicate;
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public class EmptyStringToEmptyOptionalUnitTest {
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@Test
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public void givenEmptyString_whenFilteringOnOptional_thenEmptyOptionalIsReturned() {
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String str = "";
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Optional<String> opt = Optional.ofNullable(str).filter(s -> !s.isEmpty());
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Assert.assertFalse(opt.isPresent());
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}
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@Test
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public void givenEmptyString_whenFilteringOnOptionalInJava11_thenEmptyOptionalIsReturned() {
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String str = "";
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Optional<String> opt = Optional.ofNullable(str).filter(Predicate.not(String::isEmpty));
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Assert.assertFalse(opt.isPresent());
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}
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@Test
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public void givenEmptyString_whenPassingResultOfEmptyToNullToOfNullable_thenEmptyOptionalIsReturned() {
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String str = "";
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Optional<String> opt = Optional.ofNullable(Strings.emptyToNull(str));
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Assert.assertFalse(opt.isPresent());
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}
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}
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@@ -0,0 +1,43 @@
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package com.baeldung;
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import static org.hamcrest.CoreMatchers.is;
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import static org.junit.Assert.assertTrue;
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import org.junit.Test;
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public class NewStringAPIUnitTest {
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@Test
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public void whenRepeatStringTwice_thenGetStringTwice() {
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String output = "La ".repeat(2) + "Land";
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is(output).equals("La La Land");
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}
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@Test
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public void whenStripString_thenReturnStringWithoutWhitespaces() {
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is("\n\t hello \u2005".strip()).equals("hello");
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}
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@Test
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public void whenTrimAdvanceString_thenReturnStringWithWhitespaces() {
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is("\n\t hello \u2005".trim()).equals("hello \u2005");
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}
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@Test
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public void whenBlankString_thenReturnTrue() {
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assertTrue("\n\t\u2005 ".isBlank());
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}
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@Test
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public void whenMultilineString_thenReturnNonEmptyLineCount() {
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String multilineStr = "This is\n \n a multiline\n string.";
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long lineCount = multilineStr.lines()
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.filter(String::isBlank)
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.count();
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is(lineCount).equals(3L);
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}
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}
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@@ -0,0 +1,46 @@
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package com.baeldung;
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import static org.junit.Assert.assertTrue;
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import static org.hamcrest.CoreMatchers.is;
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import java.util.Arrays;
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import java.util.Set;
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import java.util.stream.Collectors;
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import org.junit.Test;
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public class OuterUnitTest {
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private static final String NEST_HOST_NAME = "com.baeldung.Outer";
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@Test
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public void whenGetNestHostFromOuter_thenGetNestHost() {
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is(Outer.class.getNestHost().getName()).equals(NEST_HOST_NAME);
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}
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@Test
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public void whenGetNestHostFromInner_thenGetNestHost() {
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is(Outer.Inner.class.getNestHost().getName()).equals(NEST_HOST_NAME);
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}
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@Test
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public void whenCheckNestmatesForNestedClasses_thenGetTrue() {
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is(Outer.Inner.class.isNestmateOf(Outer.class)).equals(true);
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}
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@Test
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public void whenCheckNestmatesForUnrelatedClasses_thenGetFalse() {
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is(Outer.Inner.class.isNestmateOf(Outer.class)).equals(false);
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}
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@Test
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public void whenGetNestMembersForNestedClasses_thenGetAllNestedClasses() {
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Set<String> nestMembers = Arrays.stream(Outer.Inner.class.getNestMembers())
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.map(Class::getName)
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.collect(Collectors.toSet());
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is(nestMembers.size()).equals(2);
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assertTrue(nestMembers.contains("com.baeldung.Outer"));
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assertTrue(nestMembers.contains("com.baeldung.Outer$Inner"));
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}
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}
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@@ -0,0 +1,240 @@
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package com.baeldung.java11.httpclient.test;
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import static org.hamcrest.CoreMatchers.containsString;
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import static org.hamcrest.CoreMatchers.equalTo;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertThat;
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import static org.junit.Assert.assertTrue;
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import static org.junit.Assert.fail;
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import java.io.IOException;
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import java.net.Authenticator;
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import java.net.CookieManager;
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import java.net.CookiePolicy;
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import java.net.HttpURLConnection;
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import java.net.PasswordAuthentication;
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import java.net.ProxySelector;
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import java.net.URI;
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import java.net.URISyntaxException;
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import java.net.http.HttpClient;
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import java.net.http.HttpRequest;
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import java.net.http.HttpResponse;
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import java.net.http.HttpResponse.BodyHandlers;
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import java.util.Arrays;
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import java.util.List;
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import java.util.concurrent.CompletableFuture;
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import java.util.concurrent.CompletionException;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.TimeUnit;
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import java.util.stream.Collectors;
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import org.junit.jupiter.api.Test;
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public class HttpClientTest {
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@Test
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public void shouldReturnSampleDataContentWhenConnectViaSystemProxy() throws IOException, InterruptedException, URISyntaxException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("https://postman-echo.com/post"))
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.headers("Content-Type", "text/plain;charset=UTF-8")
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.POST(HttpRequest.BodyPublishers.ofString("Sample body"))
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.build();
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HttpResponse<String> response = HttpClient.newBuilder()
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.proxy(ProxySelector.getDefault())
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.build()
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.send(request, HttpResponse.BodyHandlers.ofString());
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assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
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assertThat(response.body(), containsString("Sample body"));
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}
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@Test
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public void shouldNotFollowRedirectWhenSetToDefaultNever() throws IOException, InterruptedException, URISyntaxException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("http://stackoverflow.com"))
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.version(HttpClient.Version.HTTP_1_1)
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.GET()
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.build();
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HttpResponse<String> response = HttpClient.newBuilder()
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.build()
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.send(request, HttpResponse.BodyHandlers.ofString());
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assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_MOVED_PERM));
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assertThat(response.body(), containsString("https://stackoverflow.com/"));
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}
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@Test
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public void shouldFollowRedirectWhenSetToAlways() throws IOException, InterruptedException, URISyntaxException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("http://stackoverflow.com"))
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.version(HttpClient.Version.HTTP_1_1)
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.GET()
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.build();
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HttpResponse<String> response = HttpClient.newBuilder()
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.followRedirects(HttpClient.Redirect.ALWAYS)
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.build()
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.send(request, HttpResponse.BodyHandlers.ofString());
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assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
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assertThat(response.request()
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.uri()
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.toString(), equalTo("https://stackoverflow.com/"));
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}
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@Test
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public void shouldReturnOKStatusForAuthenticatedAccess() throws URISyntaxException, IOException, InterruptedException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("https://postman-echo.com/basic-auth"))
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.GET()
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.build();
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HttpResponse<String> response = HttpClient.newBuilder()
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.authenticator(new Authenticator() {
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@Override
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protected PasswordAuthentication getPasswordAuthentication() {
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return new PasswordAuthentication("postman", "password".toCharArray());
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}
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})
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.build()
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.send(request, HttpResponse.BodyHandlers.ofString());
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assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
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}
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@Test
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public void shouldSendRequestAsync() throws URISyntaxException, InterruptedException, ExecutionException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("https://postman-echo.com/post"))
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.headers("Content-Type", "text/plain;charset=UTF-8")
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.POST(HttpRequest.BodyPublishers.ofString("Sample body"))
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.build();
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CompletableFuture<HttpResponse<String>> response = HttpClient.newBuilder()
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.build()
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.sendAsync(request, HttpResponse.BodyHandlers.ofString());
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assertThat(response.get()
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.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
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}
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@Test
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public void shouldUseJustTwoThreadWhenProcessingSendAsyncRequest() throws URISyntaxException, InterruptedException, ExecutionException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("https://postman-echo.com/get"))
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.GET()
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.build();
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ExecutorService executorService = Executors.newFixedThreadPool(2);
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CompletableFuture<HttpResponse<String>> response1 = HttpClient.newBuilder()
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.executor(executorService)
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.build()
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.sendAsync(request, HttpResponse.BodyHandlers.ofString());
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CompletableFuture<HttpResponse<String>> response2 = HttpClient.newBuilder()
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.executor(executorService)
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.build()
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.sendAsync(request, HttpResponse.BodyHandlers.ofString());
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CompletableFuture<HttpResponse<String>> response3 = HttpClient.newBuilder()
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.executor(executorService)
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.build()
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.sendAsync(request, HttpResponse.BodyHandlers.ofString());
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CompletableFuture.allOf(response1, response2, response3)
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.join();
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assertThat(response1.get()
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.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
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assertThat(response2.get()
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.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
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assertThat(response3.get()
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.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
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}
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@Test
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public void shouldNotStoreCookieWhenPolicyAcceptNone() throws URISyntaxException, IOException, InterruptedException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("https://postman-echo.com/get"))
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.GET()
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.build();
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HttpClient httpClient = HttpClient.newBuilder()
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.cookieHandler(new CookieManager(null, CookiePolicy.ACCEPT_NONE))
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.build();
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httpClient.send(request, HttpResponse.BodyHandlers.ofString());
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assertTrue(httpClient.cookieHandler()
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.isPresent());
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}
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@Test
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public void shouldStoreCookieWhenPolicyAcceptAll() throws URISyntaxException, IOException, InterruptedException {
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HttpRequest request = HttpRequest.newBuilder()
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.uri(new URI("https://postman-echo.com/get"))
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.GET()
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.build();
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HttpClient httpClient = HttpClient.newBuilder()
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.cookieHandler(new CookieManager(null, CookiePolicy.ACCEPT_ALL))
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.build();
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httpClient.send(request, HttpResponse.BodyHandlers.ofString());
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assertTrue(httpClient.cookieHandler()
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.isPresent());
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}
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@Test
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public void shouldProcessMultipleRequestViaStream() throws URISyntaxException, ExecutionException, InterruptedException {
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List<URI> targets = Arrays.asList(new URI("https://postman-echo.com/get?foo1=bar1"), new URI("https://postman-echo.com/get?foo2=bar2"));
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HttpClient client = HttpClient.newHttpClient();
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List<CompletableFuture<String>> futures = targets.stream()
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.map(target -> client.sendAsync(HttpRequest.newBuilder(target)
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.GET()
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.build(), HttpResponse.BodyHandlers.ofString())
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.thenApply(response -> response.body()))
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.collect(Collectors.toList());
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CompletableFuture.allOf(futures.toArray(new CompletableFuture[0]))
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.join();
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if (futures.get(0)
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.get()
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.contains("foo1")) {
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assertThat(futures.get(0)
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.get(), containsString("bar1"));
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assertThat(futures.get(1)
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.get(), containsString("bar2"));
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} else {
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assertThat(futures.get(1)
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.get(), containsString("bar2"));
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assertThat(futures.get(1)
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.get(), containsString("bar1"));
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}
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}
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@Test
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public void completeExceptionallyExample() {
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CompletableFuture<String> cf = CompletableFuture.completedFuture("message").thenApplyAsync(String::toUpperCase,
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CompletableFuture.delayedExecutor(1, TimeUnit.SECONDS));
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CompletableFuture<String> exceptionHandler = cf.handle((s, th) -> { return (th != null) ? "message upon cancel" : ""; });
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cf.completeExceptionally(new RuntimeException("completed exceptionally"));
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assertTrue("Was not completed exceptionally", cf.isCompletedExceptionally());
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try {
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cf.join();
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fail("Should have thrown an exception");
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} catch (CompletionException ex) { // just for testing
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assertEquals("completed exceptionally", ex.getCause().getMessage());
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}
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assertEquals("message upon cancel", exceptionHandler.join());
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}
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}
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@@ -0,0 +1,168 @@
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package com.baeldung.java11.httpclient.test;
|
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|
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import static java.time.temporal.ChronoUnit.SECONDS;
|
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import static org.hamcrest.CoreMatchers.containsString;
|
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import static org.hamcrest.CoreMatchers.equalTo;
|
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import static org.junit.Assert.assertThat;
|
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|
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import java.io.ByteArrayInputStream;
|
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import java.io.IOException;
|
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import java.net.HttpURLConnection;
|
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import java.net.URI;
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import java.net.URISyntaxException;
|
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import java.net.http.HttpClient;
|
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import java.net.http.HttpRequest;
|
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import java.net.http.HttpResponse;
|
||||
import java.nio.file.Paths;
|
||||
import java.security.NoSuchAlgorithmException;
|
||||
import java.time.Duration;
|
||||
|
||||
import org.junit.Test;
|
||||
|
||||
public class HttpRequestTest {
|
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|
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@Test
|
||||
public void shouldReturnStatusOKWhenSendGetRequest() throws IOException, InterruptedException, URISyntaxException {
|
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HttpRequest request = HttpRequest.newBuilder()
|
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.uri(new URI("https://postman-echo.com/get"))
|
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.GET()
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.build();
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||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
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.send(request, HttpResponse.BodyHandlers.ofString());
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||||
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assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
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}
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||||
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@Test
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public void shouldUseHttp2WhenWebsiteUsesHttp2() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
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.uri(new URI("https://stackoverflow.com"))
|
||||
.version(HttpClient.Version.HTTP_2)
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||||
.GET()
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.build();
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||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
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||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
assertThat(response.version(), equalTo(HttpClient.Version.HTTP_2));
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||||
}
|
||||
|
||||
@Test
|
||||
public void shouldFallbackToHttp1_1WhenWebsiteDoesNotUseHttp2() throws IOException, InterruptedException, URISyntaxException, NoSuchAlgorithmException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/get"))
|
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.version(HttpClient.Version.HTTP_2)
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||||
.GET()
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||||
.build();
|
||||
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||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.version(), equalTo(HttpClient.Version.HTTP_1_1));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldReturnStatusOKWhenSendGetRequestWithDummyHeaders() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/get"))
|
||||
.headers("key1", "value1", "key2", "value2")
|
||||
.GET()
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldReturnStatusOKWhenSendGetRequestTimeoutSet() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/get"))
|
||||
.timeout(Duration.of(10, SECONDS))
|
||||
.GET()
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldReturnNoContentWhenPostWithNoBody() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/post"))
|
||||
.POST(HttpRequest.BodyPublishers.noBody())
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldReturnSampleDataContentWhenPostWithBodyText() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/post"))
|
||||
.headers("Content-Type", "text/plain;charset=UTF-8")
|
||||
.POST(HttpRequest.BodyPublishers.ofString("Sample request body"))
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
assertThat(response.body(), containsString("Sample request body"));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldReturnSampleDataContentWhenPostWithInputStream() throws IOException, InterruptedException, URISyntaxException {
|
||||
byte[] sampleData = "Sample request body".getBytes();
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/post"))
|
||||
.headers("Content-Type", "text/plain;charset=UTF-8")
|
||||
.POST(HttpRequest.BodyPublishers.ofInputStream(() -> new ByteArrayInputStream(sampleData)))
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
assertThat(response.body(), containsString("Sample request body"));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldReturnSampleDataContentWhenPostWithByteArrayProcessorStream() throws IOException, InterruptedException, URISyntaxException {
|
||||
byte[] sampleData = "Sample request body".getBytes();
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/post"))
|
||||
.headers("Content-Type", "text/plain;charset=UTF-8")
|
||||
.POST(HttpRequest.BodyPublishers.ofByteArray(sampleData))
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
assertThat(response.body(), containsString("Sample request body"));
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldReturnSampleDataContentWhenPostWithFileProcessorStream() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/post"))
|
||||
.headers("Content-Type", "text/plain;charset=UTF-8")
|
||||
.POST(HttpRequest.BodyPublishers.ofFile(Paths.get("src/test/resources/sample.txt")))
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newHttpClient()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
assertThat(response.body(), containsString("Sample file content"));
|
||||
}
|
||||
|
||||
}
|
||||
@@ -0,0 +1,54 @@
|
||||
package com.baeldung.java11.httpclient.test;
|
||||
|
||||
import static org.hamcrest.CoreMatchers.equalTo;
|
||||
import static org.junit.Assert.assertNotNull;
|
||||
import static org.junit.Assert.assertThat;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.net.HttpURLConnection;
|
||||
import java.net.URI;
|
||||
import java.net.URISyntaxException;
|
||||
import java.net.http.HttpClient;
|
||||
import java.net.http.HttpRequest;
|
||||
import java.net.http.HttpResponse;
|
||||
|
||||
import org.junit.Test;
|
||||
|
||||
public class HttpResponseTest {
|
||||
|
||||
@Test
|
||||
public void shouldReturnStatusOKWhenSendGetRequest() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("https://postman-echo.com/get"))
|
||||
.version(HttpClient.Version.HTTP_2)
|
||||
.GET()
|
||||
.build();
|
||||
|
||||
HttpResponse<String> response = HttpClient.newBuilder()
|
||||
.followRedirects(HttpClient.Redirect.NORMAL)
|
||||
.build()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(response.statusCode(), equalTo(HttpURLConnection.HTTP_OK));
|
||||
assertNotNull(response.body());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void shouldResponseURIDifferentThanRequestUIRWhenRedirect() throws IOException, InterruptedException, URISyntaxException {
|
||||
HttpRequest request = HttpRequest.newBuilder()
|
||||
.uri(new URI("http://stackoverflow.com"))
|
||||
.version(HttpClient.Version.HTTP_2)
|
||||
.GET()
|
||||
.build();
|
||||
HttpResponse<String> response = HttpClient.newBuilder()
|
||||
.followRedirects(HttpClient.Redirect.NORMAL)
|
||||
.build()
|
||||
.send(request, HttpResponse.BodyHandlers.ofString());
|
||||
|
||||
assertThat(request.uri()
|
||||
.toString(), equalTo("http://stackoverflow.com"));
|
||||
assertThat(response.uri()
|
||||
.toString(), equalTo("https://stackoverflow.com/"));
|
||||
}
|
||||
|
||||
}
|
||||
@@ -0,0 +1,23 @@
|
||||
package com.baeldung.optional;
|
||||
|
||||
import org.junit.Test;
|
||||
|
||||
import java.util.Optional;
|
||||
|
||||
import static org.junit.Assert.assertFalse;
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
/**
|
||||
* Unit tests for {@link Optional} in Java 11.
|
||||
*/
|
||||
public class OptionalUnitTest {
|
||||
|
||||
@Test
|
||||
public void givenAnEmptyOptional_isEmpty_thenBehavesAsExpected() {
|
||||
Optional<String> opt = Optional.of("Baeldung");
|
||||
assertFalse(opt.isEmpty());
|
||||
|
||||
opt = Optional.ofNullable(null);
|
||||
assertTrue(opt.isEmpty());
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user