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How to use SuppressConstructorSubclassDemo class of samples.suppressconstructor package

Best Powermock code snippet using samples.suppressconstructor.SuppressConstructorSubclassDemo

Source:SuppressConstructorDemoTest.java

...21import org.powermock.api.support.membermodification.MemberModifier;22import org.powermock.core.classloader.annotations.PrepareForTest;23import org.powermock.modules.junit4.PowerMockRunner;24import samples.suppressconstructor.SuppressConstructorDemo;25import samples.suppressconstructor.SuppressConstructorSubclassDemo;26/**27 * This test demonstrates how to tell PowerMock to avoid executing constructor28 * code for a certain class. This is crucial in certain tests where the29 * constructor or a subclass's constructor performs operations that are of no30 * concern to the unit test of the actual class or if the constructor performs31 * operations, such as getting services from a runtime environment that has not32 * been initialized. In normal situations you're forced to create an integration33 * or function test for the class instead (and thus the runtime environment is34 * available). This is not particularly good when it comes to testing method35 * logic. PowerMock solves these problems by letting you specify the36 * {@link PowerMock#suppressConstructor(Class...)} method37 */38@RunWith(PowerMockRunner.class)39@PrepareForTest(SuppressConstructorDemo.class)40public class SuppressConstructorDemoTest {41    /**42     * This test makes sure that the real constructor has never been called.43     */44    @Test45    public void testSuppressConstructor() throws Exception {46        MemberModifier.suppress(MemberMatcher.constructor(SuppressConstructorDemo.class));47        final SuppressConstructorDemo tested = new SuppressConstructorDemo("a message");48        Assert.assertNull("Message should have been null since we're skipping the execution of the constructor code.", tested.getMessage());49    }50    /**51     * This test makes sure that the real parent constructor has never been52     * called.53     */54    @Test55    public void testSuppressParentConstructor() throws Exception {56        MemberModifier.suppress(MemberMatcher.constructor(SuppressConstructorSubclassDemo.class));57        final SuppressConstructorDemo tested = new SuppressConstructorDemo("a message");58        Assert.assertNull("Message should have been null since we're skipping the execution of the constructor code.", tested.getMessage());59    }60    /**61     * This test makes sure that it's possible to also mock methods from the62     * class under test at the same time as skipping constructor execution.63     */64    @Test65    public void testPartialMockingAndSuppressParentConstructor() throws Exception {66        MemberModifier.suppress(MemberMatcher.constructor(SuppressConstructorSubclassDemo.class));67        final SuppressConstructorDemo tested = createPartialMock(SuppressConstructorDemo.class, "returnAMessage");68        final String expected = "Hello world!";69        expectPrivate(tested, "returnAMessage").andReturn(expected);70        replay(tested);71        final String actual = tested.getMyOwnMessage();72        verify(tested);73        Assert.assertEquals(expected, actual);74        Assert.assertNull("Message should have been null since we're skipping the execution of the constructor code.", tested.getMessage());75    }76}...

SuppressConstructorSubclassDemo

Using AI Code Generation

1package samples.suppressconstructor;2import org.junit.jupiter.api.Test;3import static org.junit.jupiter.api.Assertions.assertEquals;4import static org.junit.jupiter.api.Assertions.assertThrows;5import static org.junit.jupiter.api.Assertions.assertTrue;6import static org.junit.jupiter.api.Assertions.fail;7import org.junit.jupiter.api.function.Executable;8public class SuppressConstructorSubclassDemoTest {9    public void testSuppressConstructorSubclassDemo() {10        Throwable exception = assertThrows(Exception.class, () -> {11            new SuppressConstructorSubclassDemo();12        });13        String expectedMessage = "Suppress default constructor for noninstantiability";14        String actualMessage = exception.getMessage();15        assertTrue(actualMessage.contains(expectedMessage));16    }17}18[INFO] --- maven-compiler-plugin:3.8.0:testCompile (default-testCompile) @ suppressconstructor ---

SuppressConstructorSubclassDemo

Using AI Code Generation

1SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();2demo.print();3SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();4demo.print();5SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();6demo.print();7SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();8demo.print();9SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();10demo.print();11SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();12demo.print();13SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();14demo.print();15SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();16demo.print();17SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();18demo.print();19SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();20demo.print();21SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();22demo.print();23SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();24demo.print();25SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();26demo.print();27SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();28demo.print();29SuppressConstructorSubclassDemo demo = new SuppressConstructorSubclassDemo();30demo.print();

SuppressConstructorSubclassDemo

Using AI Code Generation

1public class SuppressConstructorSubclassDemo {2    public static void main(String[] args) {3    }4}5public class SuppressConstructorSubclassDemo {6    public static void main(String[] args) {7    }8}

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