Merge pull request #7298 from amit2103/BAEL-12826

[BAEL-12826] - Let's break the junit-5 module
This commit is contained in:
Loredana Crusoveanu
2019-07-15 15:19:59 +03:00
committed by GitHub
31 changed files with 10 additions and 11 deletions

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### Relevant Articles:
- [The Basics of JUnit 5 A Preview](http://www.baeldung.com/junit-5-preview)
- [A Guide to JUnit 5](http://www.baeldung.com/junit-5)
- [JUnit5 @RunWith](http://www.baeldung.com/junit-5-runwith)
- [Get the Path of the /src/test/resources Directory in JUnit](https://www.baeldung.com/junit-src-test-resources-directory-path)
- [Tagging and Filtering JUnit Tests](https://www.baeldung.com/junit-filtering-tests)
- [JUnit 5 Temporary Directory Support](https://www.baeldung.com/junit-5-temporary-directory)
- [@Before vs @BeforeClass vs @BeforeEach vs @BeforeAll](http://www.baeldung.com/junit-before-beforeclass-beforeeach-beforeall)
- [JUnit 5 @Test Annotation](http://www.baeldung.com/junit-5-test-annotation)
- [Migrating from JUnit 4 to JUnit 5](http://www.baeldung.com/junit-5-migration)
- [Assert an Exception is Thrown in JUnit 4 and 5](http://www.baeldung.com/junit-assert-exception)

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package com.baeldung.junit5;
public class Greetings {
public static String sayHello() {
return "Hello";
}
}

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package com.baeldung.junit5.bean;
/**
* Bean that contains utility methods to work with numbers.
*
* @author Donato Rimenti
*
*/
public class NumbersBean {
/**
* Returns true if a number is even, false otherwise.
*
* @param number
* the number to check
* @return true if the argument is even, false otherwise
*/
public boolean isNumberEven(int number) {
return number % 2 == 0;
}
}

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package com.baeldung;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import java.util.ConcurrentModificationException;
import java.util.HashMap;
import java.util.Map;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;
public class ExceptionUnitTest {
@Test
void shouldThrowException() {
Throwable exception = assertThrows(UnsupportedOperationException.class, () -> {
throw new UnsupportedOperationException("Not supported");
});
assertEquals(exception.getMessage(), "Not supported");
}
@Test
void assertThrowsException() {
String str = null;
assertThrows(IllegalArgumentException.class, () -> {
Integer.valueOf(str);
});
}
@Test
public void whenModifyMapDuringIteration_thenThrowExecption() {
Map<Integer, String> hashmap = new HashMap<>();
hashmap.put(1, "One");
hashmap.put(2, "Two");
Executable executable = () -> hashmap.forEach((key, value) -> hashmap.remove(1));
assertThrows(ConcurrentModificationException.class, executable);
}
}

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package com.baeldung;
import static org.junit.jupiter.api.Assertions.*;
import java.util.Arrays;
import java.util.List;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
class FirstUnitTest {
@Test
void lambdaExpressions() {
List<Integer> numbers = Arrays.asList(1, 2, 3);
assertTrue(numbers.stream()
.mapToInt(i -> i)
.sum() > 5, "Sum should be greater than 5");
}
@Disabled("test to show MultipleFailuresError")
@Test
void groupAssertions() {
int[] numbers = { 0, 1, 2, 3, 4 };
assertAll("numbers", () -> assertEquals(numbers[0], 1), () -> assertEquals(numbers[3], 3), () -> assertEquals(numbers[4], 1));
}
@Test
@Disabled
void disabledTest() {
assertTrue(false);
}
}

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package com.baeldung;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.junit.jupiter.api.Test;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.runner.RunWith;
import com.baeldung.junit5.Greetings;
@RunWith(JUnitPlatform.class)
public class GreetingsUnitTest {
@Test
void whenCallingSayHello_thenReturnHello() {
assertTrue("Hello".equals(Greetings.sayHello()));
}
}

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package com.baeldung;
import java.util.logging.Logger;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
//@RunWith(JUnitPlatform.class)
public class JUnit5NewFeaturesUnitTest {
private static final Logger log = Logger.getLogger(JUnit5NewFeaturesUnitTest.class.getName());
@BeforeAll
static void setup() {
log.info("@BeforeAll - executes once before all test methods in this class");
}
@BeforeEach
void init() {
log.info("@BeforeEach - executes before each test method in this class");
}
@DisplayName("Single test successful")
@Test
void testSingleSuccessTest() {
log.info("Success");
}
@Test
@Disabled("Not implemented yet.")
void testShowSomething() {
}
@AfterEach
void tearDown() {
log.info("@AfterEach - executed after each test method.");
}
@AfterAll
static void done() {
log.info("@AfterAll - executed after all test methods.");
}
}

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package com.baeldung;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Stream;
import org.junit.jupiter.api.DynamicTest;
import org.junit.jupiter.api.TestFactory;
public class LiveTest {
private List<String> in = new ArrayList<>(Arrays.asList("Hello", "Yes", "No"));
private List<String> out = new ArrayList<>(Arrays.asList("Cześć", "Tak", "Nie"));
@TestFactory
public Stream<DynamicTest> translateDynamicTestsFromStream() {
return in.stream()
.map(word -> DynamicTest.dynamicTest("Test translate " + word, () -> {
int id = in.indexOf(word);
assertEquals(out.get(id), translate(word));
}));
}
private String translate(String word) {
if ("Hello".equalsIgnoreCase(word)) {
return "Cześć";
} else if ("Yes".equalsIgnoreCase(word)) {
return "Tak";
} else if ("No".equalsIgnoreCase(word)) {
return "Nie";
}
return "Error";
}
}

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package com.baeldung.exception;
import static org.junit.jupiter.api.Assertions.assertThrows;
import org.junit.jupiter.api.Test;
public class ExceptionAssertionUnitTest {
@Test
public void whenExceptionThrown_thenAssertionSucceeds() {
String test = null;
assertThrows(NullPointerException.class, () -> {
test.length();
});
}
@Test
public void whenDerivedExceptionThrown_thenAssertionSucceds() {
String test = null;
assertThrows(RuntimeException.class, () -> {
test.length();
});
}
}

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package com.baeldung.junit5.bean.test;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import com.baeldung.junit5.bean.NumbersBean;
/**
* Test class for {@link NumbersBean}.
*
* @author Donato Rimenti
*
*/
public class NumbersBeanUnitTest {
/**
* The bean to test.
*/
private NumbersBean bean = new NumbersBean();
/**
* Tests that when an even number is passed to
* {@link NumbersBean#isNumberEven(int)}, true is returned.
*/
@Test
void givenEvenNumber_whenCheckingIsNumberEven_thenTrue() {
boolean result = bean.isNumberEven(8);
Assertions.assertTrue(result);
}
/**
* Tests that when an odd number is passed to
* {@link NumbersBean#isNumberEven(int)}, false is returned.
*/
@Test
void givenOddNumber_whenCheckingIsNumberEven_thenFalse() {
boolean result = bean.isNumberEven(3);
Assertions.assertFalse(result);
}
}

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package com.baeldung.junit5.spring;
import static org.junit.jupiter.api.Assertions.assertTrue;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit.jupiter.SpringExtension;
import com.baeldung.junit5.Greetings;
@ExtendWith(SpringExtension.class)
@ContextConfiguration(classes = { SpringTestConfiguration.class })
public class GreetingsSpringUnitTest {
@Test
void whenCallingSayHello_thenReturnHello() {
assertTrue("Hello".equals(Greetings.sayHello()));
}
}

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package com.baeldung.junit5.spring;
import org.springframework.context.annotation.Configuration;
@Configuration
public class SpringTestConfiguration {
}

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package com.baeldung.migration.junit4;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.baeldung.migration.junit4.categories.Annotations;
import com.baeldung.migration.junit4.categories.JUnit4UnitTest;
@Category(value = { Annotations.class, JUnit4UnitTest.class })
public class AnnotationTestExampleUnitTest {
@Test(expected = Exception.class)
public void shouldRaiseAnException() throws Exception {
throw new Exception("This is my expected exception");
}
@Test(timeout = 1)
@Ignore
public void shouldFailBecauseTimeout() throws InterruptedException {
Thread.sleep(10);
}
}

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package com.baeldung.migration.junit4;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import java.util.List;
import org.junit.Ignore;
import org.junit.Test;
public class AssertionsExampleUnitTest {
@Test
@Ignore
public void shouldFailBecauseTheNumbersAreNotEqualld() {
assertEquals("Numbers are not equal!", 2, 3);
}
@Test
public void shouldAssertAllTheGroup() {
List<Integer> list = Arrays.asList(1, 2, 3);
assertEquals("List is not incremental", list.get(0)
.intValue(), 1);
assertEquals("List is not incremental", list.get(1)
.intValue(), 2);
assertEquals("List is not incremental", list.get(2)
.intValue(), 3);
}
}

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package com.baeldung.migration.junit4;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@RunWith(JUnit4.class)
public class BeforeAndAfterAnnotationsUnitTest {
private static final Logger LOG = LoggerFactory.getLogger(BeforeAndAfterAnnotationsUnitTest.class);
private List<String> list;
@Before
public void init() {
LOG.info("startup");
list = new ArrayList<>(Arrays.asList("test1", "test2"));
}
@After
public void finalize() {
LOG.info("finalize");
list.clear();
}
@Test
public void whenCheckingListSize_ThenSizeEqualsToInit() {
LOG.info("executing test");
assertEquals(2, list.size());
list.add("another test");
}
@Test
public void whenCheckingListSizeAgain_ThenSizeEqualsToInit() {
LOG.info("executing another test");
assertEquals(2, list.size());
list.add("yet another test");
}
}

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package com.baeldung.migration.junit4;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@RunWith(JUnit4.class)
public class BeforeClassAndAfterClassAnnotationsUnitTest {
private static final Logger LOG = LoggerFactory.getLogger(BeforeClassAndAfterClassAnnotationsUnitTest.class);
@BeforeClass
public static void setup() {
LOG.info("startup - creating DB connection");
}
@AfterClass
public static void tearDown() {
LOG.info("closing DB connection");
}
@Test
public void simpleTest() {
LOG.info("simple test");
}
@Test
public void anotherSimpleTest() {
LOG.info("another simple test");
}
}

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package com.baeldung.migration.junit4;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
public class ExceptionAssertionUnitTest {
@Rule
public ExpectedException exceptionRule = ExpectedException.none();
@Test(expected = NullPointerException.class)
public void whenExceptionThrown_thenExpectationSatisfied() {
String test = null;
test.length();
}
@Test
public void whenExceptionThrown_thenRuleIsApplied() {
exceptionRule.expect(NumberFormatException.class);
exceptionRule.expectMessage("For input string");
Integer.parseInt("1a");
}
}

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package com.baeldung.migration.junit4;
import org.junit.Rule;
import org.junit.Test;
import com.baeldung.migration.junit4.rules.TraceUnitTestRule;
public class RuleExampleUnitTest {
@Rule
public final TraceUnitTestRule traceRuleTests = new TraceUnitTestRule();
@Test
public void whenTracingTests() {
System.out.println("This is my test");
/*...*/
}
}

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package com.baeldung.migration.junit4.categories;
public interface Annotations {
}

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package com.baeldung.migration.junit4.categories;
public interface JUnit4UnitTest {
}

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package com.baeldung.migration.junit4.rules;
import java.util.ArrayList;
import java.util.List;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.MultipleFailureException;
import org.junit.runners.model.Statement;
public class TraceUnitTestRule implements TestRule {
@Override
public Statement apply(Statement base, Description description) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
List<Throwable> errors = new ArrayList<Throwable>();
System.out.println("Starting test ... " + description.getMethodName());
try {
base.evaluate();
} catch (Throwable e) {
errors.add(e);
} finally {
System.out.println("... test finished. " + description.getMethodName());
}
MultipleFailureException.assertEmpty(errors);
}
};
}
}

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package com.baeldung.migration.junit5;
import java.time.Duration;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.runner.RunWith;
@Tag("annotations")
@Tag("junit5")
@RunWith(JUnitPlatform.class)
public class AnnotationTestExampleUnitTest {
@Test
public void shouldRaiseAnException() throws Exception {
Assertions.assertThrows(Exception.class, () -> {
throw new Exception("This is my expected exception");
});
}
@Test
@Disabled
public void shouldFailBecauseTimeout() throws InterruptedException {
Assertions.assertTimeout(Duration.ofMillis(1), () -> Thread.sleep(10));
}
}

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package com.baeldung.migration.junit5;
import java.util.Arrays;
import java.util.List;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.Test;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.runner.RunWith;
@RunWith(JUnitPlatform.class)
public class AssertionsExampleUnitTest {
@Test
@Disabled
public void shouldFailBecauseTheNumbersAreNotEqual() {
Assertions.assertEquals(2, 3, "Numbers are not equal!");
}
@Test
@Disabled
public void shouldFailBecauseItsNotTrue_overloading() {
Assertions.assertTrue(() -> {
return false;
}, () -> "It's not true!");
}
@Test
public void shouldAssertAllTheGroup() {
List<Integer> list = Arrays.asList(1, 2, 3);
Assertions.assertAll("List is not incremental", () -> Assertions.assertEquals(list.get(0)
.intValue(), 1), () -> Assertions.assertEquals(
list.get(1)
.intValue(),
2),
() -> Assertions.assertEquals(list.get(2)
.intValue(), 3));
}
}

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package com.baeldung.migration.junit5;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assumptions.assumeFalse;
import static org.junit.jupiter.api.Assumptions.assumeTrue;
import static org.junit.jupiter.api.Assumptions.assumingThat;
import org.junit.jupiter.api.Test;
public class AssumptionUnitTest {
@Test
public void trueAssumption() {
assumeTrue(5 > 1, () -> "5 is greater the 1");
assertEquals(5 + 2, 7);
}
@Test
public void falseAssumption() {
assumeFalse(5 < 1, () -> "5 is less then 1");
assertEquals(5 + 2, 7);
}
@Test
public void assumptionThat() {
String someString = "Just a string";
assumingThat(someString.equals("Just a string"), () -> assertEquals(2 + 2, 4));
}
}

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package com.baeldung.migration.junit5;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@RunWith(JUnitPlatform.class)
public class BeforeAllAndAfterAllAnnotationsUnitTest {
private static final Logger LOG = LoggerFactory.getLogger(BeforeAllAndAfterAllAnnotationsUnitTest.class);
@BeforeAll
public static void setup() {
LOG.info("startup - creating DB connection");
}
@AfterAll
public static void tearDown() {
LOG.info("closing DB connection");
}
@Test
public void simpleTest() {
LOG.info("simple test");
}
@Test
public void anotherSimpleTest() {
LOG.info("another simple test");
}
}

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package com.baeldung.migration.junit5;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@RunWith(JUnitPlatform.class)
public class BeforeEachAndAfterEachAnnotationsUnitTest {
private static final Logger LOG = LoggerFactory.getLogger(BeforeEachAndAfterEachAnnotationsUnitTest.class);
private List<String> list;
@BeforeEach
public void init() {
LOG.info("startup");
list = new ArrayList<>(Arrays.asList("test1", "test2"));
}
@AfterEach
public void finalize() {
LOG.info("finalize");
list.clear();
}
@Test
public void whenCheckingListSize_ThenSizeEqualsToInit() {
LOG.info("executing test");
assertEquals(2, list.size());
list.add("another test");
}
@Test
public void whenCheckingListSizeAgain_ThenSizeEqualsToInit() {
LOG.info("executing another test");
assertEquals(2, list.size());
list.add("yet another test");
}
}

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package com.baeldung.migration.junit5;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.runner.RunWith;
import com.baeldung.migration.junit5.extensions.TraceUnitExtension;
@RunWith(JUnitPlatform.class)
@ExtendWith(TraceUnitExtension.class)
public class RuleExampleUnitTest {
@Test
public void whenTracingTests() {
System.out.println("This is my test");
/*...*/
}
}

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package com.baeldung.migration.junit5.extensions;
import org.junit.jupiter.api.extension.AfterEachCallback;
import org.junit.jupiter.api.extension.BeforeEachCallback;
import org.junit.jupiter.api.extension.ExtensionContext;
public class TraceUnitExtension implements AfterEachCallback, BeforeEachCallback {
@Override
public void beforeEach(ExtensionContext context) throws Exception {
System.out.println("Starting test ... " + context.getDisplayName());
}
@Override
public void afterEach(ExtensionContext context) throws Exception {
System.out.println("... test finished. " + context.getDisplayName());
}
}

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@@ -17,7 +17,7 @@ public class ReadResourceDirectoryUnitTest {
String absolutePath = file.getAbsolutePath();
System.out.println(absolutePath);
Assert.assertTrue(absolutePath.endsWith("src/test/resources"));
Assert.assertTrue(absolutePath.endsWith("src" + File.separator + "test" + File.separator + "resources"));
}
@Test
@@ -27,7 +27,7 @@ public class ReadResourceDirectoryUnitTest {
String absolutePath = resourceDirectory.toFile().getAbsolutePath();
System.out.println(absolutePath);
Assert.assertTrue(absolutePath.endsWith("src/test/resources"));
Assert.assertTrue(absolutePath.endsWith("src" + File.separator + "test" + File.separator + "resources"));
}
@Test
@@ -39,7 +39,7 @@ public class ReadResourceDirectoryUnitTest {
String absolutePath = file.getAbsolutePath();
System.out.println(absolutePath);
Assert.assertTrue(absolutePath.endsWith("/example_resource.txt"));
Assert.assertTrue(absolutePath.endsWith(File.separator + "example_resource.txt"));
}
}

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package com.baeldung.suites;
import org.junit.platform.runner.JUnitPlatform;
import org.junit.platform.suite.api.SelectPackages;
import org.junit.runner.RunWith;
@RunWith(JUnitPlatform.class)
@SelectPackages("com.baeldung")
// @SelectClasses({AssertionTest.class, AssumptionTest.class, ExceptionTest.class})
public class AllUnitTest {
}