KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use MatcherAssert class of org.assertj.core.api package

Best Assertj code snippet using org.assertj.core.api.MatcherAssert

1package locations;2import org.assertj.core.api.Condition;3import org.hamcrest.MatcherAssert;4import org.junit.jupiter.api.Assertions;5import org.junit.jupiter.api.DisplayName;6import org.junit.jupiter.api.Test;7import org.junit.jupiter.api.io.TempDir;8import org.mockito.Mockito;9import java.io.IOException;10import java.nio.file.Files;11import java.nio.file.Path;12import java.util.ArrayList;13import java.util.List;14import java.util.Optional;15import static org.hamcrest.Matchers.hasItem;16import static org.hamcrest.CoreMatchers.*;17import static org.hamcrest.MatcherAssert.assertThat;18import static org.hamcrest.Matchers.hasProperty;19class LocationServiceTest {20    LocationService locationService = new LocationService();21    @TempDir22    Path tempDir;23    @DisplayName("WritingFile")24    @Test25    void writeLocationsTest() throws IOException {26        Path path = tempDir.resolve("testplaces.csv");27        List<Location> locations = new ArrayList<>();28        locations.add(new Location("BÃ©kÃ©scsaba", 0, 72.913752));29        locations.add(new Location("BalmazÃºjvÃ¡ros", 33.197256, 0));30        locations.add(new Location("Baja", 12.557326, 33.416238));31        locations.add(new Location("Ãhat-PusztakÃ³cs", 47.62922, 20.93852));32        locations.add(new Location("BeregdarÃ³c", 48.19622, 22.54252));33        locationService.writeLocations(path, locations);34        List<String> lines = Files.readAllLines(path);35        Assertions.assertEquals("BeregdarÃ³c, 48.19622, 22.54252", lines.get(4));36    }37    @DisplayName("ReadingFile")38    @Test39    void readLocationsTest() throws IOException {40        Path path = Path.of("src/main/resources/favlocations.csv");41        List<Location> locations = locationService.readLocations(path);42        Assertions.assertEquals("Ãhat-PusztakÃ³cs", locations.get(3).getName());43        Assertions.assertEquals(0, locations.get(0).getLat());44        Assertions.assertEquals(0, locations.get(1).getLon());45    }46    @DisplayName("ReadingFileByHamcrestMatchers")47    @Test48    void readLocationsByHamcrestTest() throws IOException {49        Path path = Path.of("src/main/resources/favlocations.csv");50        List<Location> locations = locationService.readLocations(path);51        MatcherAssert.assertThat(locations.get(1).getName(), equalTo("BalmazÃºjvÃ¡ros"));52        MatcherAssert.assertThat(locations.size(), equalTo(5));53    }54    @DisplayName("ZeroCoordinateHamcrest")55    @Test56    void ownHamcrestMatcherTest() {57        Path path = Path.of("src/main/resources/favlocations.csv");58        MatcherAssert.assertThat(locationService.readLocations(path).get(2),59                LocationWithZeroCoordinate.zeroCoordinate(equalTo(false)));60    }61    @DisplayName("ReadingFileByAssertJMatchers")62    @Test63    void readLocationsByAssertJTest() throws IOException {64        Path path = Path.of("src/main/resources/favlocations.csv");65        List<Location> locations = locationService.readLocations(path);66        org.assertj.core.api.Assertions.assertThat(locations.get(2).getName().equals("Baja"));67        org.assertj.core.api.Assertions.assertThat(locations).hasSize(5);68        org.assertj.core.api.Assertions.assertThat(locations.get(4).getLat()).isEqualTo(48.19622);69    }70    @DisplayName("CoordinateZeroByAssertJ")71    @Test72    void ownAssertJassertTest() {...

Source: AssertThatConversionTest.java

...5class AssertThatConversionTest {6    @Test7    void assertThat() {8        String code = "org.junit.Assert.assertThat(a, b);";9        String expected = "org.hamcrest.MatcherAssert.assertThat(a, b);";10        assertAfterWrappingInMethod(code, expected);11    }12    @Test13    void importAlreadyPresentForAssertThat() {14        String originalImport = "import static org.hamcrest.MatcherAssert.assertThat;\n";15        String originalMethod = "assertThat(xxx);";16        assertUnchangedAfterWrappingInMethod(originalImport, originalMethod);17    }18    @Test19    void assertJImportForAssertThatPresent() {20        String originalImport = "import static org.assertj.core.api.Assertions.assertThat;\n";21        String originalMethod = "assertThat(xxx);";22        assertUnchangedAfterWrappingInMethod(originalImport, originalMethod);23    }24    @Test25    void assertJStarImportForAssertThatPresent() {26        String originalImport = "import static org.assertj.core.api.Assertions.*;\n";27        String originalMethod = "assertThat(xxx);";28        assertUnchangedAfterWrappingInMethod(originalImport, originalMethod);29    }30    @Test31    void newImportForAssertThat() {32        String originalImport = "import static org.junit.Assert.*;\n";33        String originalMethod = "assertThat(\"message\", xxx, yyy);";34        String expectedImport = "import static org.junit.jupiter.api.Assertions.*;\n"35                + "import static org.hamcrest.MatcherAssert.assertThat;\n";36        assertAfterWrappingInMethod(originalImport, originalMethod, expectedImport, originalMethod);37    }38    @Test39    void replaceFullQualifiedStaticImportToMatcherAssert() {40        String originalImport = "import static org.junit.Assert.assertThat;\n";41        String originalMethod = "assertThat(xxx);";42        String expectedImport = "import static org.hamcrest.MatcherAssert.assertThat;\n";43        assertAfterWrappingInMethod(originalImport, originalMethod, expectedImport, originalMethod);44    }45    @Test46    void keepMatcherAssertImportUnchanged() {47        String originalImport = "import org.hamcrest.MatcherAssert;\n";48        String originalMethod = "MatcherAssert.assertThat(xxx);";49        String expectedImport = "import org.hamcrest.MatcherAssert;\n";50        assertAfterWrappingInMethod(originalImport, originalMethod, expectedImport, originalMethod);51    }52    @Test53    void doNotAddMatcherAssertImportIfThereIsAStaticImportToAssertJ() {54        String originalImport = "import org.assertj.core.api.Assertions.assertThat;\n";55        String originalMethod = "assertThat(xxx);";56        String expectedImport = "import org.assertj.core.api.Assertions.assertThat;\n";57        assertAfterWrappingInMethod(originalImport, originalMethod, expectedImport, originalMethod);58    }59    @Test60    void doNotAddMatcherAssertImportIfThereIsAnImportToAssertJ() {61        String originalImport = "import org.assertj.core.api.Assertions.*;\n";62        String originalMethod = "assertThat(xxx);";63        String expectedImport = "import org.assertj.core.api.Assertions.*;\n";64        assertAfterWrappingInMethod(originalImport, originalMethod, expectedImport, originalMethod);65    }66}...

Source: AssertionsTest.java

1package info.ejava.examples.app.testing.testbasics.jupiter;2import lombok.extern.slf4j.Slf4j;3import org.assertj.core.api.BDDAssertions;4import org.hamcrest.MatcherAssert;5import org.hamcrest.Matchers;6import org.junit.Assert;7import org.junit.jupiter.api.Assertions;8import org.junit.jupiter.api.Test;9@Slf4j10class AssertionsTest {11    int lhs=1;12    int rhs=1;13    int expected=2;14    @Test15    void one_and_one() {16        //junit 4/Vintage assertion17        Assert.assertEquals(expected, lhs+rhs);18        //Jupiter assertion19        Assertions.assertEquals(expected, lhs+rhs);20        //hamcrest assertion21        MatcherAssert.assertThat(lhs+rhs, Matchers.is(expected));22        //AssertJ assertion23        org.assertj.core.api.Assertions.assertThat(lhs+rhs).isEqualTo(expected);24        //AssertJ BDD25        BDDAssertions.then(lhs+rhs).isEqualTo(expected);26    }27    @Test28    void one_and_one_description() {29        //junit 4/Vintage assertion30        Assert.assertEquals("math error", expected, lhs+rhs);31        //Jupiter assertions32        Assertions.assertEquals(expected, lhs+rhs, "math error");33        Assertions.assertEquals(expected, lhs+rhs, ()->String.format("math error %d+%d!=%d",lhs,rhs,expected));34        //hamcrest assertion35        MatcherAssert.assertThat("math error",lhs+rhs, Matchers.is(expected));36        //AssertJ assertion37        org.assertj.core.api.Assertions.assertThat(lhs+rhs)38                ;39        org.assertj.core.api.Assertions.assertThat(lhs+rhs)40                .as("math error %d+%d!=%d",lhs,rhs,expected)41                .isEqualTo(expected);42        //AssertJ BDD43        BDDAssertions.then(lhs+rhs)44                .as("math error")45                .isEqualTo(expected);46    }47    @Test48    void junit_all() {49        Assertions.assertAll("all assertions",...

MatcherAssert

Using AI Code Generation

1package com.automationrhapsody.junit5;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.assertThatThrownBy;4import static org.assertj.core.api.Assertions.catchThrowable;5import static org.assertj.core.api.Assertions.catchThrowableOfType;6import static org.assertj.core.api.Assertio

MatcherAssert

Using AI Code Generation

1import org.junit.Test;2import org.junit.Assert;3import org.junit.Assert.*;4import static org.assertj.core.api.Assertions.*;5import static org.assertj.core.api.Assertions.assertThat;6import static org.assertj.core.api.Assertions.assertThatExceptionOfType;7import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;8import static org.assertj.core.api.Assertions.assertThatNullPointerExce

MatcherAssert

Using AI Code Generation

1import org.assertj.core.api.MatcherAssert;2import org.hamcrest.CoreMatchers;3public class MatcherAssertClass {4    public static void main(String[] args) {5        MatcherAssert.assertThat("Hello", CoreMatchers.equalTo("Hello"));6    }7}8import org.assertj.core.api.MatcherAssert;9import org.hamcrest.CoreMatchers;10public class MatcherAssertClass {11    public static void main(String[] args) {12        MatcherAssert.assertThat("Hello", CoreMatchers.not(CoreMatchers.equalTo("Hi")));13    }14}15import org.assertj.core.api.MatcherAssert;16import org.hamcrest.CoreMatchers;17public class MatcherAssertClass {18    public static void main(String[] args) {19        MatcherAssert.assertThat("Hello", CoreMatchers.is(CoreMatchers.equalTo("Hello")));20    }21}

MatcherAssert

Using AI Code Generation

1import org.assertj.core.api.MatcherAssert;2import org.hamcrest.Matchers;3import org.junit.Test;4{5   public void test1()6   {7      MatcherAssert.assertThat("Hello", Matchers.equalTo("Hello"));8   }9}10java -cp .;junit-4.12.jar;hamcrest-core-1.3.jar;assertj-core-3.10.0.jar org.junit.runner.JUnitCore 111OK (1 test)

MatcherAssert

Using AI Code Generation

1import org.assertj.core.api.MatcherAssert;2import org.hamcrest.Matchers;3public class AssertJMatcherAssert {4   public static void main(String[] args) {5      MatcherAssert.assertThat("Hello", Matchers.equalTo("Hello"));6   }7}8SoftAssertions softAssertions = new SoftAssertions();9softAssertions.assertAll();10import org.assertj.core.api.SoftAssertions;11public class AssertJSoftAssertions {12   public static void main(String[] args) {13      SoftAssertions softAssertions = new SoftAssertions();14      softAssertions.assertThat("Hello").isEqualTo("Hello");15      softAssertions.assertThat("Hello").isEqualTo("Hello World");16      softAssertions.assertAll();17   }18}19import org.assertj.core.api.Assertions;20public class AssertJExceptionAssertions {21   public static void main(String[] args) {

MatcherAssert

Using AI Code Generation

1import org.assertj.core.api.*;2import org.junit.*;3public class AssertJTest {4	public void testAssertJ() {5		Assertions.assertThat("abc").isEqualTo("abc");6		Assertions.assertThat("abc").isNotEqualTo("xyz");7		Assertions.assertThat("abc").startsWith("a");8		Assertions.assertThat("abc").endsWith("c");9		Assertions.assertThat("abc").contains("b");10		Assertions.assertThat("abc").doesNotContain("z");11		Assertions.assertThat("abc").isNotEmpty();12		Assertions.assertThat("abc").hasSize(3);13		Assertions.assertThat("abc").hasSameSizeAs("xyz");14		Assertions.assertThat("abc").containsOnlyOnce("b");15		Assertions.assertThat("abc").containsSequence("a", "b");16		Assertions.assertThat("abc").containsIgnoringCase("B");17		Assertions.assertThat("abc").containsIgnoringCase("B").doesNotContain("d");18	}19}

MatcherAssert

Using AI Code Generation

1import org.assertj.core.api.*;2import java.util.regex.Pattern;3public class 1 {4    public static void main(String[] args) {5        Pattern pattern = Pattern.compile("^[A-Z].*");6        String text = "This is a sample text";7        MatcherAssert.assertThat(text, Matchers.matchesPattern(pattern));8    }9}10import org.hamcrest.core.*;11import java.util.regex.Pattern;12public class 2 {13    public static void main(String[] args) {14        Pattern pattern = Pattern.compile("^[A-Z].*");15        String text = "This is a sample text";16        MatcherAssert.assertThat(text, Matchers.matchesPattern(pattern));17    }18}19import org.hamcrest.core.*;20import java.util.regex.Pattern;21public class 3 {22    public static void main(String[] args) {23        Pattern pattern = Pattern.compile("^[A-Z].*");24        String text = "this is a sample text";25        MatcherAssert.assertThat(text, Matchers.matchesPattern(pattern));26    }27}28import org.assertj.core.api.*;29import java.util.regex.Pattern;30public class 4 {31    public static void main(String[] args) {32        Pattern pattern = Pattern.compile("^[A-Z].*");33        String text = "this is a sample text";34        MatcherAssert.assertThat(text, Matchers.matchesPattern(pattern));35    }36}37import org.hamcrest.core.*;38import java.util.regex.Pattern;39public class 5 {40    public static void main(String[] args)

MatcherAssert

Using AI Code Generation

1import org.assertj.core.api.*;2import org.testng.annotations.Test;3public class MatcherAssertExample {4	public void test() {5		MatcherAssert.assertThat("Hello World", Matchers.equalTo("Hello World"));6	}7}8java -cp .;jars\* MatcherAssertExample9	at org.assertj.core.api.AbstractAssert.fail(AbstractAssert.java:64)10	at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:151)11	at MatcherAssertExample.test(MatcherAssertExample.java:9)12	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)13	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)14	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)15	at java.lang.reflect.Method.invoke(Method.java:498)16	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)17	at org.testng.internal.Invoker.invokeMethod(Invoker.java:583)18	at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)19	at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)20	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)21	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)22	at org.testng.TestRunner.privateRun(TestRunner.java:648)23	at org.testng.TestRunner.run(TestRunner.java:505)24	at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)25	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)26	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)27	at org.testng.SuiteRunner.run(SuiteRunner.java:364)28	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)29	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)30	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)31	at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)32	at org.testng.TestNG.run(TestNG.java:1049)33	at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:113)34	at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:206)35	at org.testng.remote.RemoteTestNG.main(R

Blogs

Check out the latest blogs from LambdaTest on this topic:

Considering Agile Principles from a different angle

In addition to the four values, the Agile Manifesto contains twelve principles that are used as guides for all methodologies included under the Agile movement, such as XP, Scrum, and Kanban.

Scala Testing: A Comprehensive Guide

Before we discuss Scala testing, let us understand the fundamentals of Scala and how this programming language is a preferred choice for your development requirements.The popularity and usage of Scala are rapidly rising, evident by the ever-increasing open positions for Scala developers.

Oct’22 Updates: New Analytics And App Automation Dashboard, Test On Google Pixel 7 Series, And More

Hey everyone! We hope you had a great Hacktober. At LambdaTest, we thrive to bring you the best with each update. Our engineering and tech teams work at lightning speed to deliver you a seamless testing experience.

Dec’22 Updates: The All-New LT Browser 2.0, XCUI App Automation with HyperExecute, And More!

Greetings folks! With the new year finally upon us, we’re excited to announce a collection of brand-new product updates. At LambdaTest, we strive to provide you with a comprehensive test orchestration and execution platform to ensure the ultimate web and mobile experience.

Appium: Endgame and What’s Next? [Testμ 2022]

The automation backend architecture of Appium has undergone significant development along with the release of numerous new capabilities. With the advent of Appium, test engineers can cover mobile apps, desktop apps, Flutter apps, and more.

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.