Best junit code snippet using org.junit.runner.Annotation Type OrderWith
Source: OrderWith.java
1package org.junit.runner;2import java.lang.annotation.ElementType;3import java.lang.annotation.Inherited;4import java.lang.annotation.Retention;5import java.lang.annotation.RetentionPolicy;6import java.lang.annotation.Target;7import org.junit.runner.manipulation.Ordering;8/**9 * When a test class is annotated with <code>@OrderWith</code> or extends a class annotated10 * with <code>@OrderWith</code>, JUnit will order the tests in the test class (and child11 * test classes, if any) using the ordering defined by the {@link Ordering} class.12 *13 * @since 4.1314 */15@Retention(RetentionPolicy.RUNTIME)16@Target(ElementType.TYPE)17@Inherited18public @interface OrderWith {19 /**20 * Gets a class that extends {@link Ordering}. The class must have a public no-arg constructor.21 */22 Class<? extends Ordering.Factory> value();23}...
Annotation Type OrderWith
Using AI Code Generation
1@OrderWith(OrderAnnotation.class)2public class TestOrder {3 @Order(2)4 public void test1() {5 System.out.println("test1");6 }7 @Order(1)8 public void test2() {9 System.out.println("test2");10 }11 @Order(3)12 public void test3() {13 System.out.println("test3");14 }15}
Annotation Type OrderWith
Using AI Code Generation
1@RunWith(OrderWith.class)2public class TestRunner {3@FixMethodOrder(MethodSorters.NAME_ASCENDING)4public class TestRunner {5@FixMethodOrder(MethodSorters.JVM)6public class TestRunner {7@FixMethodOrder(MethodSorters.DEFAULT)8public class TestRunner {9@FixMethodOrder(MethodSorters.NAME_ASCENDING)10public class TestRunner {11@FixMethodOrder(MethodSorters.JVM)12public class TestRunner {13@FixMethodOrder(MethodSorters.DEFAULT)14public class TestRunner {15@FixMethodOrder(MethodSorters.NAME_ASCENDING)16public class TestRunner {17@FixMethodOrder(MethodSorters.JVM)18public class TestRunner {19@FixMethodOrder(MethodSorters.DEFAULT)20public class TestRunner {21@FixMethodOrder(MethodSorters.NAME_ASCENDING)22public class TestRunner {
JUnit 4 Expected Exception type
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Best way to automagically migrate tests from JUnit 3 to JUnit 4?
There's actually an alternative to the @Test(expected=Xyz.class)
in JUnit 4.7 using Rule
and ExpectedException
In your test case you declare an ExpectedException
annotated with @Rule
, and assign it a default value of ExpectedException.none()
. Then in your test that expects an exception you replace the value with the actual expected value. The advantage of this is that without using the ugly try/catch method, you can further specify what the message within the exception was
@Rule public ExpectedException thrown= ExpectedException.none();
@Test
public void myTest() {
thrown.expect( Exception.class );
thrown.expectMessage("Init Gold must be >= 0");
rodgers = new Pirate("Dread Pirate Rodgers" , -100);
}
Using this method, you might be able to test for the message in the generic exception to be something specific.
ADDITION
Another advantage of using ExpectedException
is that you can more precisely scope the exception within the context of the test case. If you are only using @Test(expected=Xyz.class)
annotation on the test, then the Xyz exception can be thrown anywhere in the test code -- including any test setup or pre-asserts within the test method. This can lead to a false positive.
Using ExpectedException, you can defer specifying the thrown.expect(Xyz.class)
until after any setup and pre-asserts, just prior to actually invoking the method under test. Thus, you more accurately scope the exception to be thrown by the actual method invocation rather than any of the test fixture itself.
JUnit 5 NOTE:
JUnit 5 JUnit Jupiter has removed @Test(expected=...)
, @Rule
and ExpectedException
altogether. They are replaced with the new assertThrows()
, which requires the use of Java 8 and lambda syntax. ExpectedException
is still available for use in JUnit 5 through JUnit Vintage. Also JUnit Jupiter will also continue to support JUnit 4 ExpectedException
through use of the junit-jupiter-migrationsupport module, but only if you add an additional class-level annotation of @EnableRuleMigrationSupport
.
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