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How to use methodResultFor method of org.assertj.core.util.introspection.MethodSupport class

Best Assertj code snippet using org.assertj.core.util.introspection.MethodSupport.methodResultFor

Source:MethodSupport_methodResultFor_Test.java

...19import org.junit.Before;20import org.junit.Rule;21import org.junit.Test;22/**23 * Tests for <code>{@link MethodSupport#methodResultFor(Object, String)}</code>.24 *25 * @author MichaÅ Piotrkowski26 */27public class MethodSupport_methodResultFor_Test {28  @Rule29  public ExpectedException thrown = none();30  private Person bruceWayne;31  private Person joker;32  private SuperHero batman;33  @Before34  public void setUp() {35    bruceWayne = new Person("Bruce Wayne");36    joker = new Person("Joker");37    batman = new SuperHero("Batman", bruceWayne, joker);38  }39  @Test40  public void should_invoke_methods_without_arguments() {41    Object result = MethodSupport.methodResultFor(batman, "archenemy");42    assertThat(result).isEqualTo(joker);43  }44  @Test45  public void should_invoke_methods_from_superclass() {46    Object result = MethodSupport.methodResultFor(batman, "getName");47    assertThat(result).isEqualTo("Batman");48  }49  @Test50  public void should_fail_meaningfully_if_object_instance_not_provided() {51    thrown.expectNullPointerException("Object instance can not be null!");52    MethodSupport.methodResultFor(null, "methodName");53  }54  @Test55  public void should_fail_meaningfully_if_method_name_not_provided() {56    thrown.expectNullPointerException("Method name can not be empty!");57    MethodSupport.methodResultFor(batman, null);58  }59  @Test60  public void should_fail_meaningfully_if_method_name_is_empty() {61    thrown.expectIllegalArgumentException("Method name can not be empty!");62    MethodSupport.methodResultFor(batman, "");63  }64  @Test65  public void should_fail_meaningfully_if_method_not_found() {66    thrown.expectIllegalArgumentException("Can't find method 'commitCrime' in class SuperHero.class. Make sure public" +67                                            " method exists and accepts no arguments!");68    MethodSupport.methodResultFor(batman, "commitCrime");69  }70  @Test71  public void should_fail_meaningfully_if_method_does_not_return_value() {72    thrown.expectIllegalArgumentException("Method 'saveTheDay' in class SuperHero.class has to return a value!");73    MethodSupport.methodResultFor(batman, "saveTheDay");74  }75  @Test76  public void should_fail_meaningfully_if_method_is_not_public() {77    thrown.expectIllegalArgumentException("Can't find method 'trueIdentity' in class SuperHero.class. Make sure " +78                                            "public method exists and accepts no arguments!");79    MethodSupport.methodResultFor(batman, "trueIdentity");80  }81}...

methodResultFor

Using AI Code Generation

1import org.assertj.core.util.introspection.MethodSupport;2import org.junit.Test;3public class MethodSupportTest {4    public void testMethodResultFor() throws Exception {5        String methodName = "getAge";6        Person person = new Person();7        person.setAge(10);8        int result = MethodSupport.instance().methodResultFor(methodName, person, int.class);9        System.out.println("result = " + result);10    }11    private static class Person {12        private int age;13        public int getAge() {14            return age;15        }16        public void setAge(int age) {17            this.age = age;18        }19    }20}

methodResultFor

Using AI Code Generation

1import org.assertj.core.util.introspection.IntrospectionError2import org.assertj.core.util.introspection.MethodSupport3class Person {4    String getName() { return name }5}6def person = new Person()7def methodResult = MethodSupport.methodResultFor("getName", person)8def methodResultWithParams = MethodSupport.methodResultFor("getName", person, [1, 2, 3])9try {10    MethodSupport.methodResultFor("getAge", person)11} catch (IntrospectionError e) {12}13try {14    MethodSupport.methodResultFor("getName", new Person() {15        String getName() { throw new RuntimeException() }16    })17} catch (RuntimeException e) {18}19class Person2 {20    List<String> getNames() { return names }21}22def person2 = new Person2()23def methodResult2 = MethodSupport.methodResultFor("getNames", person2)24class Person3 {25    int getAge() { return age }26}27def person3 = new Person3()28def methodResult3 = MethodSupport.methodResultFor("getAge", person3)29class Person4 {30    int getAge() { return age }31}32def person4 = new Person4()33def methodResult4 = MethodSupport.methodResultFor("getAge", person4)

methodResultFor

Using AI Code Generation

1import org.assertj.core.util.introspection.MethodSupport;2class MethodSupportExample {3    private final MethodSupport methodSupport = new MethodSupport();4    public static void main(String[] args) {5        new MethodSupportExample().example();6    }7    void example() {8        String[] names = {"John", "Jane", "Adam", "Tom"};9        Object result = methodSupport.methodResultFor("length", names);10        System.out.println(result);11    }12}

methodResultFor

Using AI Code Generation

1import org.assertj.core.util.introspection.MethodSupport;2public class MethodSupportExample {3	public static void main(String[] args) {4		MethodSupportExample obj = new MethodSupportExample();5		Object result = MethodSupport.methodResultFor(obj, "sum", new Object[]{10, 20});6		System.out.println(result);7	}8	public int sum(int a, int b){9		return a+b;10	}11}

methodResultFor

Using AI Code Generation

1import org.assertj.core.util.introspection.MethodSupport;2public class MethodSupportTest {3    public static void main(String[] args) {4        MethodSupport ms = new MethodSupport();5        String[] s = new String[]{"a", "b", "c"};6        Object res = ms.methodResultFor("toString", s, new Class[]{});7        System.out.println(res);8    }9}

methodResultFor

Using AI Code Generation

1import org.assertj.core.util.introspection.MethodSupport;2class MethodSupportExample {3    public static void main(String[] args) {4        Person person = new Person("John", "Doe");5        String firstName = (String) MethodSupport.methodResultFor("getFirstName", person);6        System.out.println(firstName);7    }8    static class Person {9        private final String firstName;10        private final String lastName;11        Person(String firstName, String lastName) {12            this.firstName = firstName;13            this.lastName = lastName;14        }15        public String getFirstName() {16            return firstName;17        }18        public String getLastName() {19            return lastName;20        }21    }22}

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