KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta 
How to use contentOf method of org.assertj.core.api.Assertions class
Best Assertj code snippet using org.assertj.core.api.Assertions.contentOf
Source:AssertJ.java 
...1362 default <THROWABLE extends Throwable> THROWABLE catchThrowableOfType(ThrowableAssert.ThrowingCallable shouldRaiseThrowable, Class<THROWABLE> type) {1363 return Assertions.catchThrowableOfType(shouldRaiseThrowable, type);1364 }1365 /**1366 * Delegate call to public static java.lang.String org.assertj.core.api.Assertions.contentOf(java.io.File)1367 * {@link org.assertj.core.api.Assertions#contentOf(java.io.File)}1368 */1369 default String contentOf(File file) {1370 return Assertions.contentOf(file);1371 }1372 /**1373 * Delegate call to public static java.lang.String org.assertj.core.api.Assertions.contentOf(java.net.URL)1374 * {@link org.assertj.core.api.Assertions#contentOf(java.net.URL)}1375 */1376 default String contentOf(URL url) {1377 return Assertions.contentOf(url);1378 }1379 /**1380 * Delegate call to public static java.lang.String org.assertj.core.api.Assertions.contentOf(java.io.File,java.nio.charset.Charset)1381 * {@link org.assertj.core.api.Assertions#contentOf(java.io.File,java.nio.charset.Charset)}1382 */1383 default String contentOf(File file, Charset charset) {1384 return Assertions.contentOf(file, charset);1385 }1386 /**1387 * Delegate call to public static java.lang.String org.assertj.core.api.Assertions.contentOf(java.io.File,java.lang.String)1388 * {@link org.assertj.core.api.Assertions#contentOf(java.io.File,java.lang.String)}1389 */1390 default String contentOf(File file, String charsetName) {1391 return Assertions.contentOf(file, charsetName);1392 }1393 /**1394 * Delegate call to public static java.lang.String org.assertj.core.api.Assertions.contentOf(java.net.URL,java.nio.charset.Charset)1395 * {@link org.assertj.core.api.Assertions#contentOf(java.net.URL,java.nio.charset.Charset)}1396 */1397 default String contentOf(URL url, Charset charset) {1398 return Assertions.contentOf(url, charset);1399 }1400 /**1401 * Delegate call to public static java.lang.String org.assertj.core.api.Assertions.contentOf(java.net.URL,java.lang.String)1402 * {@link org.assertj.core.api.Assertions#contentOf(java.net.URL,java.lang.String)}1403 */1404 default String contentOf(URL url, String charsetName) {1405 return Assertions.contentOf(url, charsetName);1406 }1407 /**1408 * Delegate call to public static <T> org.assertj.core.condition.DoesNotHave<T> org.assertj.core.api.Assertions.doesNotHave(org.assertj.core.api.Condition<? super T>)1409 * {@link org.assertj.core.api.Assertions#doesNotHave(org.assertj.core.api.Condition)}1410 */1411 default <T> DoesNotHave<T> doesNotHave(Condition<? super T> condition) {1412 return Assertions.doesNotHave(condition);1413 }1414 /**1415 * Delegate call to public static <K,V> org.assertj.core.data.MapEntry<K, V> org.assertj.core.api.Assertions.entry(K,V)1416 * {@link org.assertj.core.api.Assertions#entry(java.lang.Object,java.lang.Object)}1417 */1418 default <K,V> MapEntry<K, V> entry(K key, V value) {1419 return Assertions.entry(key, value);...
Source:HTMLCreatorIntegrationTest.java
...17import java.util.Locale;18import java.util.Map;19import static info.bliki.wiki.filter.Encoder.encodeTitleLocalUrl;20import static org.assertj.core.api.Assertions.assertThat;21import static org.assertj.core.api.Assertions.contentOf;22@Category(IntegrationTest.class)23public abstract class HTMLCreatorIntegrationTest {24 @Rule25 public RecorderRule recorder = new RecorderRule(new ConfigurationBuilder().sslEnabled(true).build());26 protected TestWikiDB createTestDB(String name) throws SQLException, IOException {27 File directory = File.createTempFile("bliki-integration-tests", name);28 assert directory.delete();29 return new TestWikiDB(directory);30 }31 protected Configuration getConfiguration() {32 return new Configuration();33 }34 protected Result testAPI(String title, String apiLink, WikiDB db, Locale locale) throws IOException {35 User user = new TestUser(null, null, apiLink);36 user.login();37 Path mainDirectory = Files.createTempDirectory("bliki-" + encodeTitleLocalUrl(title).replace("/", "_"));38 Path imageDirectory = mainDirectory.resolve("WikiImages");39 APIWikiModel wikiModel = new APIWikiModel(user, db,40 getConfiguration(),41 locale,42 "${image}",43 "${title}",44 imageDirectory.toFile());45 DocumentCreator creator = new DocumentCreator(wikiModel, user, new String[]{title});46 @SuppressWarnings("StringBufferReplaceableByString")47 StringBuilder builder = new StringBuilder();48 builder.append(HTMLConstants.HTML_HEADER1)49 .append(HTMLConstants.CSS_MAIN_STYLE)50 .append(HTMLConstants.CSS_SCREEN_STYLE)51 .append(HTMLConstants.HTML_HEADER2);52 creator.setHeader(builder.toString());53 creator.setFooter(HTMLConstants.HTML_FOOTER);54 wikiModel.setUp();55 wikiModel.setTemplateCallsCache(new HashMap<String, String>());56 Path generatedHTMLFilename = mainDirectory.resolve(encodeTitleLocalUrl(title) + ".html");57 creator.renderToFile(generatedHTMLFilename.toString());58 System.out.println("Created file: " + generatedHTMLFilename);59 assertThat(generatedHTMLFilename.toFile()).isFile();60 assertThat(generatedHTMLFilename.toFile().length()).isGreaterThan(0);61 return new Result(generatedHTMLFilename.toFile(),62 wikiModel.getRedirectLink(),63 wikiModel.getCategories());64 }65 protected static class Result {66 final String redirectLink;67 final File content;68 final Map<String, String> categories;69 Result(File content, String redirectLink, Map<String,String> categories) {70 this.redirectLink = redirectLink;71 this.content = content;72 this.categories = categories;73 }74 public void assertContains(CharSequence ...values) {75 assertThat(contentOf(content)).contains(values);76 }77 public void assertNoUnexpandedTemplates() {78 assertThat(contentOf(content)).doesNotContain("Template:");79 }80 public void assertNoUnexpandedLinks() {81 assertThat(contentOf(content)).doesNotContain("[[");82 assertThat(contentOf(content)).doesNotContain("]]");83 }84 public Result assertNoErrors() {85 assertNoSubstLeft();86 assertNoTemplateError();87 assertNoExpressionError();88 assertNoInclude();89 assertNoUnexpandedLinks();90 assertNoUnexpandedTemplates();91 return this;92 }93 public void assertNoTemplateError() {94 assertThat(contentOf(content)).doesNotContain("TemplateParserError:");95 }96 public void assertNoExpressionError() {97 assertThat(contentOf(content)).doesNotContain("Expression error");98 }99 public void assertNoSubstLeft() {100 assertThat(contentOf(content)).doesNotContain("safesubst:");101 }102 public void assertNoTemplatesLeft() {103 assertThat(contentOf(content)).doesNotContain("{{");104 }105 public void assertNoInclude() {106 assertThat(contentOf(content)).doesNotContain("noinclude");107 }108 }109}...
Source:Files_contentOf_Test.java
...20import java.nio.charset.Charset;21import java.nio.charset.StandardCharsets;22import org.junit.jupiter.api.Test;23/**24 * Tests for {@link Files#contentOf(File, Charset)} and {@link Files#contentOf(File, String)}.25 * 26 * @author Olivier Michallat27 */28class Files_contentOf_Test {29 private final File sampleFile = new File("src/test/resources/utf8.txt");30 private final String expectedContent = "A text file encoded in UTF-8, with diacritics:\né à ";31 @Test32 void should_throw_exception_if_charset_is_null() {33 Charset charset = null;34 assertThatNullPointerException().isThrownBy(() -> Files.contentOf(new File("test"), charset));35 }36 @Test37 void should_throw_exception_if_charset_name_does_not_exist() {38 assertThatIllegalArgumentException().isThrownBy(() -> Files.contentOf(new File("test"), "Klingon"));39 }40 @Test41 void should_throw_exception_if_file_not_found() {42 File missingFile = new File("missing.txt");43 assertThat(missingFile.exists()).isFalse();44 assertThatExceptionOfType(UncheckedIOException.class).isThrownBy(() -> Files.contentOf(missingFile,45 Charset.defaultCharset()));46 }47 @Test48 void should_load_file_using_charset() {49 assertThat(Files.contentOf(sampleFile, StandardCharsets.UTF_8)).isEqualTo(expectedContent);50 }51 @Test52 void should_load_file_using_charset_name() {53 assertThat(Files.contentOf(sampleFile, "UTF-8")).isEqualTo(expectedContent);54 }55}...
contentOf
Using AI Code Generation
1package org.example;2import static org.assertj.core.api.Assertions.contentOf;3import java.io.File;4import java.io.IOException;5public class App {6 public static void main(String[] args) throws IOException {7 File file = new File("test.txt");8 String content = contentOf(file);9 System.out.println(content);10 }11}12package org.example;13import static org.assertj.core.api.Files.contentOf;14import java.io.File;15import java.io.IOException;16public class App {17 public static void main(String[] args) throws IOException {18 File file = new File("test.txt");19 String content = contentOf(file);20 System.out.println(content);21 }22}23package org.example;24import static org.assertj.core.util.Files.contentOf;25import java.io.File;26import java.io.IOException;27public class App {28 public static void main(String[] args) throws IOException {29 File file = new File("test.txt");30 String content = contentOf(file);31 System.out.println(content);32 }33}34package org.example;35import static org.assertj.core.util.Files.contentOf;36import java.io.File;37import java.io.IOException;38public class App {39 public static void main(String[] args) throws IOException {40 File file = new File("test.txt");41 String content = contentOf(file);42 System.out.println(content);43 }44}
contentOf
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.junit.Test;3import java.io.File;4import java.io.IOException;5import static org.assertj.core.api.Assertions.assertThat;6public class Test1 {7 public void test() throws IOException {8 String expected = "Hello World!";9 String actual = Assertions.contentOf(new File("C:\\Users\\test\\Desktop\\hello.txt"));10 assertThat(actual).isEqualTo(expected);11 }12}13import org.assertj.core.api.Assertions;14import org.junit.Test;15import java.io.IOException;16import static org.assertj.core.api.Assertions.assertThat;17public class Test2 {18 public void test() throws IOException {19 String expected = "Hello World!";20 String actual = Assertions.contentOf("C:\\Users\\test\\Desktop\\hello.txt");21 assertThat(actual).isEqualTo(expected);22 }23}24import org.assertj.core.api.Assertions;25import org.junit.Test;26import java.io.IOException;27import static org.assertj.core.api.Assertions.assertThat;28public class Test3 {29 public void test() throws IOException {30 String expected = "Hello World!";31 String actual = Assertions.contentOf(new File("C:\\Users\\test\\Desktop\\hello.txt"), "UTF-8");32 assertThat(actual).isEqualTo(expected);33 }34}35import org.assertj.core.api.Assertions;36import org.junit.Test;37import java.io.IOException;38import static org.assertj.core.api.Assertions.assertThat;39public class Test4 {40 public void test() throws IOException {41 String expected = "Hello World!";42 String actual = Assertions.contentOf("C:\\Users\\test\\Desktop\\hello.txt", "UTF-8");43 assertThat(actual).isEqualTo(expected);44 }45}46import org.assertj.core.api.Assertions;47import org.junit.Test;48import java.io.IOException;49import static org.assertj.core.api.Assertions.assertThat;50public class Test5 {51 public void test() throws IOException {52 String expected = "Hello World!";
contentOf
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Test1 {4 public void test1() {5 Assertions.assertThat("test").isEqualTo("test");6 }7}8import org.junit.Assert;9import org.junit.Test;10public class Test2 {11 public void test2() {12 Assert.assertThat("test", is("test"));13 }14}
contentOf
Using AI Code Generation
1import static org.assertj.core.api.Assertions.*;2import org.junit.Test;3public class 1 {4 public void test1() {5 assertThat(contentOf(new File("1.java"))).contains("import static org.assertj.core.api.Assertions.*;");6 }7}8 <"import static org.assertj.core.api.Assertions.*;">9 <"import static org.assertj.core.api.Assertions.assertThat;">10 <"import static org.assertj.core.api.Assertions.assertThat;">11at org.assertj.core.api.AbstractStringAssert.contains(AbstractStringAssert.java:250)12at org.assertj.core.api.AssertionsForClassTypes.contentOf(AssertionsForClassTypes.java:135)13at 1.test1(1.java:7)14import static org.assertj.core.api.Assertions.*;15import org.junit.Test;16public class 1 {17 public void test1() {18 assertThat(contentOf(new File("1.java"))).contains("import static org.assertj.core.api.Assertions.assertThat;");19 }20}21 <"import static org.assertj.core.api.Assertions.*;">22 <"import static org.assertj.core.api.Assertions.assertThat;">23 <"import static org.assertj.core.api.Assertions.assertThat;">24at org.assertj.core.api.AbstractStringAssert.contains(AbstractStringAssert.java:250)25at org.assertj.core.api.AssertionsForClassTypes.contentOf(AssertionsForClassTypes.java:135)26at 1.test1(1.java:7)27import static org.assertj.core.api.Assertions.*;28import org.junit.Test;29public class 1 {30 public void test1() {31 assertThat(contentOf(new File("1.java"))).contains("import static org.assertj.core.api.Assertions.assertThat;");32 }33}34 <"import static org.assertj.core.api.Assertions.*;">35 <"import static
contentOf
Using AI Code Generation
1import static org.assertj.core.api.Assertions.*;2import org.junit.Test;3public class 1 {4 public void test1() {5 String str = "Hello, World!";6 assertThat(str).contains("World");7 }8}9import static org.assertj.core.api.Assertions.*;10import org.junit.Test;11public class 2 {12 public void test1() {13 String str = "Hello, World!";14 assertThat(str).contains("World");15 }16}17import static org.assertj.core.api.Assertions.*;18import org.junit.Test;19public class 3 {20 public void test1() {21 String str = "Hello, World!";22 assertThat(str).contains("World");23 }24}25import static org.assertj.core.api.Assertions.*;26import org.junit.Test;27public class 4 {28 public void test1() {29 String str = "Hello, World!";30 assertThat(str).contains("World");31 }32}33import static org.assertj.core.api.Assertions.*;34import org.junit.Test;35public class 5 {36 public void test1() {37 String str = "Hello, World!";38 assertThat(str).contains("World");39 }40}41import static org.assertj.core.api.Assertions.*;42import org.junit.Test;43public class 6 {44 public void test1() {45 String str = "Hello, World!";46 assertThat(str).contains("World");47 }48}49import static org.assertj.core.api.Assertions.*;50import org.junit.Test;51public class 7 {52 public void test1() {53 String str = "Hello, World!";54 assertThat(str).contains("World");55 }56}57import
contentOf
Using AI Code Generation
1package org.example;2import org.assertj.core.api.Assertions;3import java.io.File;4{5 public static void main( String[] args )6 {7 String actual = Assertions.contentOf(new File("C:/Users/HP/Desktop/1.txt"));8 System.out.println(actual);9 }10}11package org.example;12import org.assertj.core.api.Assertions;13import java.io.File;14import java.io.IOException;15import java.nio.charset.Charset;16{17 public static void main( String[] args ) throws IOException18 {19 String actual = Assertions.contentOf(new File("C:/Users/HP/Desktop/1.txt"), Charset.forName("UTF-8"));20 System.out.println(actual);21 }22}23package org.example;24import org.assertj.core.api.Assertions;25import java.io.File;26import java.io.IOException;27import java.nio.charset.Charset;28{29 public static void main( String[] args ) throws IOException30 {31 String actual = Assertions.contentOf(new File("C:/Users/HP/Desktop/1.txt"), Charset.forName("UTF-8"));32 System.out.println(actual);33 }34}35package org.example;36import org.assertj.core.api.Assertions;37import java.io.File;38import java.io.IOException;39import java.nio.charset.Charset;40{41 public static void main( String[] args ) throws IOException42 {43 String actual = Assertions.contentOf(new File("C:/Users/HP/Desktop/1.txt"), Charset.forName("UTF-8"));44 System.out.println(actual);45 }46}47package org.example;48import org.assertj.core.api.Assertions;49import java.io.File;50import java.io.IOException;51import java.nio.charset.Charset;52{53 public static void main( String[] args ) throws IOException54 {55 String actual = Assertions.contentOf(new File("C:/
contentOf
Using AI Code Generation
1import static org.assertj.core.api.Assertions.contentOf;2import java.io.File;3public class ContentOfExample {4 public static void main(String[] args) {5 File file = new File("C:/Users/HP/Downloads/1.txt");6 String content = contentOf(file);7 System.out.println(content);8 }9}
contentOf
Using AI Code Generation
1import static org.assertj.core.api.Assertions.*;2import java.io.File;3import java.io.IOException;4import java.nio.charset.Charset;5import org.junit.Test;6public class Test1 {7public void test1() throws IOException {8File file = new File("src/test/resources/test1.txt");9String content = contentOf(file, Charset.forName("UTF-8"));10assertThat(content).isEqualTo("Hello World!");11}12}13import static org.assertj.core.api.Assertions.*;14import java.io.File;15import java.io.IOException;16import org.junit.Test;17public class Test2 {18public void test2() throws IOException {19File file = new File("src/test/resources/test1.txt");20String content = contentOf(file);21assertThat(content).isEqualTo("Hello World!");22}23}24import static org.assertj.core.api.Assertions.*;25import java.io.File;26import java.io.IOException;27import org.junit.Test;28public class Test3 {29public void test3() throws IOException {30File file = new File("src/test/resources/test1.txt");31String content = contentOf(file, "UTF-8");32assertThat(content).isEqualTo("Hello World!");33}34}35import static org.assertj.core.api.Assertions.*;36import java.io.File;37import java.io.IOException;38import org.junit.Test;39public class Test4 {40public void test4() throws IOException {41File file = new File("src/test/resources/test1.txt");42String content = contentOf(file, "UTF-8");43assertThat(content).isEqualTo("Hello World!");44}45}
contentOf
Using AI Code Generation
1import org.assertj.core.api.Assertions;2public class AssertjAssert {3 public static void main(String[] args) {4 String content = Assertions.contentOf(new File("C:\\Users\\sowmya\\Desktop\\test.txt"));5 System.out.println(content);6 }7}8 String content = Assertions.contentOf(new File("C:\\Users\\sowmya\\Desktop\\test.txt"));9 String content = Assertions.contentOf(new File("C:\\Users\\sowmya\\Desktop\\test.txt"));10 String content = Assertions.contentOf(new File("C:\\Users\\sowmya\\Desktop\\test.txt"));11 String content = Assertions.contentOf(new File("C:\\Users\\sowmya\\Desktop\\test.txt"));
Automation Testing Tutorials
Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run Assertj automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Most used method in Assertions
- Assertions
- assertThat
- assertThatPredicate
- createAssert
- testException
- assertThatThrownBy
- assertThatCode
- assertThatObject
- assertWith
- catchThrowable
- TextException
- catchThrowableOfType
- catchException
- catchRuntimeException
- catchNullPointerException
- catchIllegalArgumentException
- catchIOException
- catchReflectiveOperationException
- catchIllegalStateException
- catchIndexOutOfBoundsException
- assertThatExceptionOfType
- assertThatNoException
- assertThatNullPointerException
- assertThatIllegalArgumentException
- assertThatIOException
- assertThatIllegalStateException
- assertThatException
- assertThatRuntimeException
- assertThatReflectiveOperationException
- assertThatIndexOutOfBoundsException
- setRemoveAssertJRelatedElementsFromStackTrace
- fail
- failBecauseExceptionWasNotThrown
- shouldHaveThrown
- setMaxLengthForSingleLineDescription
- setMaxElementsForPrinting
- setPrintAssertionsDescription
- setDescriptionConsumer
- setMaxStackTraceElementsDisplayed
- extractProperty
- tuple
- setAllowExtractingPrivateFields
- setAllowComparingPrivateFields
- setExtractBareNamePropertyMethods
- entry
- atIndex
- offset
- within
- withPrecision
- withMarginOf
- withinPercentage
- byLessThan
- from
- allOf
- anyOf
- doesNotHave
- filter
- notIn
- contentOf
- linesOf
- setLenientDateParsing
- registerCustomDateFormat
- useDefaultDateFormatsOnly
- assertThatIterable
- assertThatIterator
- assertThatCollection
- assertThatList
- assertThatStream
- assertThatPath
- assertThatComparable
- isBlinking
- setBlinking
- AssertDelegateTarget_example
- toStringOf
- useRepresentation
- registerFormatterForType
- useDefaultRepresentation
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
