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How to use from method of org.assertj.core.api.Assertions class
Best Assertj code snippet using org.assertj.core.api.Assertions.from
Source:PersonServiceTest.java 
1package org.fasttrackit;2import org.junit.jupiter.api.Assertions;3import org.junit.jupiter.api.BeforeEach;4import org.junit.jupiter.api.Test;5public class PersonServiceTest {6 private PersonService personService;7 @BeforeEach8 void setUp() {9 personService = new PersonService();10 personService.addPerson("Mircea", "Mirceau", 28, "Oradea");11 personService.addPerson("Marcel", "Marcelus", 16, "Cluj");12 personService.addPerson("Marius", "Mariusus", 37, "Timisoara");13 personService.addPerson("Ariana", "Arianus", 23, "Oradea");14 personService.addPerson("Adina", "Adi", 68, "Cluj");15 }16 @Test17 void testAddPerson() {18 org.assertj.core.api.Assertions.assertThat(personService.getPersonList()).containsExactly(19 new Person("Mircea", "Mirceau", 28, "Oradea"),20 new Person("Marcel", "Marcelus", 16, "Cluj"),21 new Person("Marius", "Mariusus", 37, "Timisoara"),22 new Person("Ariana", "Arianus", 23, "Oradea"),23 new Person("Adina", "Adi", 68, "Cluj")24 );25 }26 @Test27 void testPersonNames() {28 Assertions.assertEquals("Mircea " + "Mirceau", personService.personNames().get(0));29 Assertions.assertEquals("Adina " + "Adi", personService.personNames().get(4));30 }31 @Test32 void testPersonsThatAreMajor() {33 org.assertj.core.api.Assertions.assertThat(personService.personsThatAreMajor()).containsExactly(34 new Person("Mircea", "Mirceau", 28, "Oradea"),35 new Person("Marius", "Mariusus", 37, "Timisoara"),36 new Person("Ariana", "Arianus", 23, "Oradea"),37 new Person("Adina", "Adi", 68, "Cluj")38 );39 }40 @Test41 void testPersonsFromOradea() {42 org.assertj.core.api.Assertions.assertThat(personService.personsFromOradea()).containsExactly(43 new Person("Mircea", "Mirceau", 28, "Oradea"),44 new Person("Ariana", "Arianus", 23, "Oradea")45 );46 }47 @Test48 void testPersonsFromOradeaOrCluj() {49 org.assertj.core.api.Assertions.assertThat(personService.personsFromOradeaOrCluj()).containsExactly(50 new Person("Mircea", "Mirceau", 28, "Oradea"),51 new Person("Marcel", "Marcelus", 16, "Cluj"),52 new Person("Ariana", "Arianus", 23, "Oradea"),53 new Person("Adina", "Adi", 68, "Cluj")54 );55 }56 @Test57 void testFirstNamesCapitalised() {58 org.assertj.core.api.Assertions.assertThat(personService.firstNamesCapitalised()).containsExactly(59 "MIRCEA", "MARCEL", "MARIUS", "ARIANA", "ADINA"60 );61 }62 @Test63 void testFirstNameFirstLetterFromLastName() {64 org.assertj.core.api.Assertions.assertThat(personService.firstNameFirstLetterFromLastName()).containsExactly(65 "Mircea M.", "Marcel M.", "Marius M.", "Ariana A.", "Adina A."66 );67 }68 @Test69 void testPersonsOlderThan18YoungerThan60() {70 org.assertj.core.api.Assertions.assertThat(personService.personsOlderThan18YoungerThan60()).containsExactly(71 new Person("Mircea", "Mirceau", 28, "Oradea"),72 new Person("Marius", "Mariusus", 37, "Timisoara"),73 new Person("Ariana", "Arianus", 23, "Oradea")74 );75 }76 @Test77 void testPersonsWhoseNameStartsWithA() {78 org.assertj.core.api.Assertions.assertThat(personService.personsWhoseNameStartsWithA()).containsExactly(79 new Person("Ariana", "Arianus", 23, "Oradea"),80 new Person("Adina", "Adi", 68, "Cluj")81 );82 }83 @Test84 void testListFirstNamesInSet() {85 org.assertj.core.api.Assertions.assertThat(personService.listFirstNamesInSet()).contains(86 "Mircea","Marcel", "Marius", "Ariana", "Adina"87 );88 }89 @Test90 void testPersonsByFirstName() {91 org.assertj.core.api.Assertions.assertThat(personService.personsSortedByFirstName()).containsExactly(92 new Person("Adina", "Adi", 68, "Cluj"),93 new Person("Ariana", "Arianus", 23, "Oradea"),94 new Person("Marcel", "Marcelus", 16, "Cluj"),95 new Person("Marius", "Mariusus", 37, "Timisoara"),96 new Person("Mircea", "Mirceau", 28, "Oradea")97 );98 }99 @Test100 void testPersonsByLastName() {101 org.assertj.core.api.Assertions.assertThat(personService.personsSortedByLastName()).containsExactly(102 new Person("Adina", "Adi", 68, "Cluj"),103 new Person("Ariana", "Arianus", 23, "Oradea"),104 new Person("Marcel", "Marcelus", 16, "Cluj"),105 new Person("Marius", "Mariusus", 37, "Timisoara"),106 new Person("Mircea", "Mirceau", 28, "Oradea")107 );108 }109 @Test110 void testPersonsSortedByFirstNameThenLastNameThenAge() {111 org.assertj.core.api.Assertions.assertThat(personService.personsSortedByFirstNameThenLastNameThenAge()).containsExactly(112 new Person("Adina", "Adi", 68, "Cluj"),113 new Person("Ariana", "Arianus", 23, "Oradea"),114 new Person("Marcel", "Marcelus", 16, "Cluj"),115 new Person("Marius", "Mariusus", 37, "Timisoara"),116 new Person("Mircea", "Mirceau", 28, "Oradea")117 );118 }119}...
Source:GuavaOptionalBefore.java
...30 assertThat(opt).contains(opt.orNull());31 String possibleNullString = System.getProperty("username");32 String notNullString = "Narf";33 assertThat(opt).as("foo").isEqualTo(Optional.of("foo"));34 assertThat(opt).isEqualTo(Optional.fromNullable("foo"));35 assertThat(opt).isEqualTo(Optional.fromNullable(null));36 assertThat(opt).isEqualTo(Optional.fromNullable(possibleNullString));37 assertThat(opt).isEqualTo(Optional.fromNullable(notNullString));38 assertThat(opt).isNotEqualTo(Optional.of("foo"));39 assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));40 assertThat(opt).isEqualTo(Optional.absent());41 assertThat(opt).isNotEqualTo(Optional.absent());42 org.assertj.guava.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.of("foo"));43 org.assertj.guava.api.Assertions.assertThat(opt).isEqualTo(Optional.fromNullable("foo"));44 org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.of("foo"));45 org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));46 org.assertj.guava.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.absent());47 org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.absent());48 org.assertj.core.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.of("foo"));49 org.assertj.core.api.Assertions.assertThat(opt).isEqualTo(Optional.fromNullable("foo"));50 org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.of("foo"));51 org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));52 org.assertj.core.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.absent());53 org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.absent());54 assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.TRUE);55 assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.FALSE);56 assertThat(opt.orNull()).as("foo").isEqualTo(null).isNotNull();57 assertThat(Optional.of(new byte[] { 2, 3 }).get()).isEqualTo(new byte[] { 2, 3 }); // not working with assertj-guava 3.2.158 org.junit.Assert.assertThat(opt, null);59 fail("oh no!");60 }61}...
Source:ObjectContentAssert.java
...34 super(actual, ObjectContentAssert.class);35 }36 /**37 * Verifies that the actual value is an array, and returns an array assertion, to38 * allow chaining of array-specific assertions from this call.39 * @return an array assertion object40 */41 public AbstractObjectArrayAssert<?, Object> asArray() {42 Objects.instance().assertIsInstanceOf(this.info, this.actual, Object[].class);43 return Assertions.assertThat((Object[]) this.actual);44 }45 /**46 * Verifies that the actual value is a map, and returns a map assertion, to allow47 * chaining of map-specific assertions from this call.48 * @return a map assertion object49 */50 @SuppressWarnings("unchecked")51 public AbstractMapAssert<?, ?, Object, Object> asMap() {52 Objects.instance().assertIsInstanceOf(this.info, this.actual, Map.class);53 return Assertions.assertThat((Map<Object, Object>) this.actual);54 }55}...
from
Using AI Code Generation
1import org.junit.Test;2import org.junit.runner.RunWith;3import org.junit.runners.JUnit4;4import static org.assertj.core.api.Assertions.assertThat;5import static org.assertj.core.api.Assertions.assertThatThrownBy;6@RunWith(JUnit4.class)7public class Test1 {8 public void test1() {9 assertThatThrownBy(() -> {10 throw new Exception("boom!");11 }).hasMessage("boom!");12 }13}14import org.junit.Test;15import org.junit.runner.RunWith;16import org.junit.runners.JUnit4;17import static org.junit.Assert.assertEquals;18import static org.junit.Assert.fail;19@RunWith(JUnit4.class)20public class Test2 {21 public void test1() {22 try {23 throw new Exception("boom!");24 } catch (Exception e) {25 assertEquals("boom!", e.getMessage());26 }27 }28}29import org.testng.annotations.Test;30import static org.testng.Assert.assertEquals;31import static org.testng.Assert.fail;32public class Test3 {33 public void test1() {34 try {35 throw new Exception("boom!");36 } catch (Exception e) {37 assertEquals("boom!", e.getMessage());38 }39 }40}41import org.testng.annotations.Test;42import static org.testng.Assert.assertEquals;43import static org.testng.Assert.fail;44public class Test4 {45 public void test1() {46 try {47 throw new Exception("boom!");48 } catch (Exception e) {49 assertEquals("boom!", e.getMessage());50 }51 }52}53import org.testng.annotations.Test;54import static org.testng.Assert.assertEquals;55import static org.testng.Assert.fail;56public class Test5 {57 public void test1() {58 try {59 throw new Exception("boom!");60 } catch (Exception e) {61 assertEquals("boom!", e.getMessage());62 }63 }64}65import org.testng.annotations.Test;66import static org.testng.Assert.assertEquals;67import static org.testng.Assert.fail;68public class Test6 {
from
Using AI Code Generation
1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.assertThatThrownBy;3import java.util.ArrayList;4import java.util.List;5import org.junit.Test;6public class AssertJTest {7 public void testAssertList() {8 List<String> list = new ArrayList<>();9 list.add("One");10 list.add("Two");11 list.add("Three");12 assertThat(list).hasSize(3);13 assertThat(list).contains("One", "Two");14 assertThat(list).containsOnly("One", "Two", "Three");15 assertThat(list).doesNotContain("Four");16 }17 public void testAssertThrow() {18 assertThatThrownBy(() -> {19 throw new IllegalArgumentException("a message");20 }).hasMessage("a message");21 }22}23import static org.junit.Assert.assertEquals;24import static org.junit.Assert.assertFalse;25import static org.junit.Assert.assertNotNull;26import static org.junit.Assert.assertNull;27import static org.junit.Assert.assertTrue;28import java.util.ArrayList;29import java.util.List;30import org.junit.Test;31public class JUnitAssertTest {32 public void testAssertList() {33 List<String> list = new ArrayList<>();34 list.add("One");35 list.add("Two");36 list.add("Three");37 assertEquals(3, list.size());38 assertTrue(list.contains("One"));39 assertTrue(list.contains("Two"));40 assertTrue(list.contains("Three"));41 assertFalse(list.contains("Four"));42 }43 public void testAssertNull() {44 Object obj = null;45 assertNull(obj);46 }47 public void testAssertNotNull() {48 Object obj = new Object();49 assertNotNull(obj);50 }51}52import static org.junit.jupiter.api.Assertions.assertEquals;53import static org.junit.jupiter.api.Assertions.assertFalse;54import static org.junit.jupiter.api.Assertions.assertNotNull;55import static org.junit.jupiter.api.Assertions.assertNull;56import static org.junit.jupiter
from
Using AI Code Generation
1import static org.assertj.core.api.Assertions.*;2import java.util.ArrayList;3import java.util.List;4import org.junit.Test;5public class TestAssertJ {6public void testAssertJ() {7Throwable thrown = catchThrowable(() -> {throw new Exception("boom!");});8assertThat(thrown).hasMessageContaining("boom");9}10public void testAssertJ2() {11List<String> list = new ArrayList<String>();12list.add("hello");13list.add("world");14assertThat(list).hasSize(2).contains("hello", "world").doesNotContain("bye");15}16public void testAssertJ3() {17assertThat(10).isBetween(5, 15);18assertThat(10).isCloseTo(11, within(2));19}20}21import static org.assertj.core.api.Assertions.*;22import java.util.ArrayList;23import java.util.List;24import org.junit.Test;25public class TestAssertJ {26public void testAssertJ() {27Throwable thrown = catchThrowable(() -> {throw new Exception("boom!");});28assertThat(thrown).hasMessageContaining("boom");29}30public void testAssertJ2() {31List<String> list = new ArrayList<String>();32list.add("hello");33list.add("world");34assertThat(list).hasSize(2).contains("hello", "world").doesNotContain("bye");35}36public void testAssertJ3() {37assertThat(10).isBetween(5, 15);38assertThat(10).isCloseTo(11, within(2));39}40}
from
Using AI Code Generation
1public class AssertJTest {2 public void testAssertJ() {3 String str = "abc";4 String str2 = "abc";5 String str3 = "def";6 String str4 = "def";7 String str5 = "ghi";8 String str6 = "ghi";9 assertThat(str).as("Test1").isEqualTo(str2);10 assertThat(str3).as("Test2").isEqualTo(str4);11 assertThat(str5).as("Test3").isEqualTo(str6);12 }13}14public class JunitTest {15 public void testJunit() {16 String str = "abc";17 String str2 = "abc";18 String str3 = "def";19 String str4 = "def";20 String str5 = "ghi";21 String str6 = "ghi";22 Assert.assertEquals(str, str2);23 Assert.assertEquals(str3, str4);24 Assert.assertEquals(str5, str6);25 }26}27public class TestNGTest {28 public void testTestNG() {29 String str = "abc";30 String str2 = "abc";31 String str3 = "def";32 String str4 = "def";33 String str5 = "ghi";34 String str6 = "ghi";35 Assert.assertEquals(str, str2);36 Assert.assertEquals(str3, str4);37 Assert.assertEquals(str5, str6);38 }39}40public class HamcrestTest {41 public void testHamcrest() {42 String str = "abc";43 String str2 = "abc";44 String str3 = "def";45 String str4 = "def";46 String str5 = "ghi";47 String str6 = "ghi";48 MatcherAssert.assertThat(str, Matchers.equalTo(str2));49 MatcherAssert.assertThat(str3, Matchers.equalTo(str4));50 MatcherAssert.assertThat(str5, Matchers.equalTo(str6));51 }52}53public class Junit5Test {54 public void testJunit5() {
from
Using AI Code Generation
1import static org.assertj.core.api.Assertions.assertThat;2import static org.assertj.core.api.Assertions.entry;3import java.util.HashMap;4import java.util.Map;5import org.junit.Test;6public class AssertJTest {7 public void testAssertJMap() {8 Map<String, String> map = new HashMap<>();9 map.put("key1", "value1");10 map.put("key2", "value2");11 assertThat(map).contains(entry("key1", "value1"), entry("key2", "value2"));12 }13}14 <{"key1"="value1", "key2"="value2"}>15 at org.assertj.core.api.Fail.fail(Fail.java:89)16 at org.assertj.core.api.Fail.fail(Fail.java:46)17 at org.assertj.core.api.AbstractMapAssert.contains(AbstractMapAssert.java:176)18 at org.assertj.core.api.AbstractMapAssert.contains(AbstractMapAssert.java:41)19 at com.journaldev.AssertJTest.testAssertJMap(AssertJTest.java:22)20 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)21 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)22 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)23 at java.lang.reflect.Method.invoke(Method.java:498)24 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)25 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)26 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)27 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)28 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)29 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)30 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)31 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit
from
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.junit.Test;3import java.util.Arrays;4public class TestAssertArrayEquals {5 public void testArrayEquals() {6 byte[] expected = "trial".getBytes();7 byte[] actual = "trial".getBytes();8 Assertions.assertThat(actual).isEqualTo(expected);9 }10}11JUnit 4: @Test(expected = Exception.class)12JUnit 4: @Test(timeout = 1000)13JUnit 4: @RunWith and @Parameterized.Parameters(name = "{index}: fib({0})={1}")14JUnit 4: @RunWith and @Parameterized.Parameters(name = "{index}: {0}!={1}")15JUnit 4: @RunWith and @Parameterized.Parameters(name = "{index}: {0}+{1}={2}")16JUnit 4: @RunWith and @Parameterized.Parameters(name = "{0}")17JUnit 4: @RunWith and @Parameterized.Parameters(name = "{index}: {0}+{1}={2}")18JUnit 4: @RunWith and @Parameterized.Parameters(name = "{0}+{1}={2}")19JUnit 4: @RunWith and @Parameterized.Parameters(name = "{index}: fib({0})={1}")20JUnit 4: @RunWith and @Parameterized.Parameters(name = "{index}: {0}!={1}")
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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
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