Best Mockito code snippet using org.mockitousage.jls.JLS_15_12_2_5Test.setUp
Source:JLS_15_12_2_5Test.java
...39 * </blockquote>40 */41 public static class JLS_15_12_2_5_Java6_Java7_Test {42 @Before43 public void setUp() throws Exception {44 Assume.assumeTrue(ClassFileVersion.of(JLS_15_12_2_5_Java6_Java7_Test.class).equals(JAVA_V6)45 || ClassFileVersion.of(JLS_15_12_2_5_Java6_Java7_Test.class).equals(JAVA_V7));46 }47 @Test48 public void with_single_arg() throws Exception {49 SingleOverload mock = mock(SingleOverload.class);50 when(mock.oneArg(isNull())).thenReturn("ok");51 assertThat(mock.oneArg(null)).describedAs("Most generic method chosen for matcher " +52 "(isNull generic upper bound is Object), but null applies " +53 "to select most specific method")54 .isEqualTo(null);55 }56 @Test57 public void with_single_arg_and_matcher_cast() throws Exception {58 SingleOverload mock = mock(SingleOverload.class);59 when(mock.oneArg((String) isNull())).thenReturn("ok");60 assertThat(mock.oneArg(null)).describedAs("Most specific method enforced for matcher via cast").isEqualTo("ok");61 }62 @Test63 public void with_single_arg_and_null_Object_reference() throws Exception {64 SingleOverload mock = mock(SingleOverload.class);65 when(mock.oneArg(isNull())).thenReturn("ok");66 Object arg = null;67 assertThat(mock.oneArg(arg)).describedAs("Most generic method chosen for matcher").isEqualTo("ok");68 }69 @Test70 public void with_variable_arg() throws Exception {71 SingleOverload mock = mock(SingleOverload.class);72 when(mock.varargs(isNull())).thenReturn("ok");73 assertThat(mock.varargs(null)).describedAs("Most generic method chosen for matcher " +74 "(isNull generic upper bound is Object), but null applies " +75 "to select most specific method")76 .isEqualTo(null);77 }78 @Test79 public void with_variable_arg_and_matcher_String_cast() throws Exception {80 SingleOverload mock = mock(SingleOverload.class);81 when(mock.varargs((String) isNull())).thenReturn("ok");82 assertThat(mock.varargs(null)).describedAs("Most specific method enforced for matcher via String cast").isEqualTo("ok");83 }84 @Test85 public void with_variable_arg_and_matcher_String_array_cast() throws Exception {86 SingleOverload mock = mock(SingleOverload.class);87 when(mock.varargs((String[]) isNull())).thenReturn("ok");88 assertThat(mock.varargs(null)).describedAs("Most specific method enforced for matcher via String[] cast").isEqualTo("ok");89 }90 @Test91 public void with_variable_arg_and_null_Object_array() throws Exception {92 SingleOverload mock = mock(SingleOverload.class);93 when(mock.varargs(isNull())).thenReturn("ok");94 Object[] args = null;95 assertThat(mock.varargs(args)).describedAs("isNull matcher generic upper bound is Object").isEqualTo("ok");96 }97 @Test98 public void with_variable_arg_and_null_Object_arg() throws Exception {99 SingleOverload mock = mock(SingleOverload.class);100 when(mock.varargs(isNull())).thenReturn("ok");101 Object arg = null;102 assertThat(mock.varargs(arg)).describedAs("isNull matcher generic upper bound is Object").isEqualTo("ok");103 }104 }105 /**106 * The JLS §15.12.2.5 states that the compiler must chose the most specific overload in Java 8, however the107 * Java 8 compiler perform a type inference before selecting108 *109 * https://docs.oracle.com/javase/specs/jls/se8/html/jls-15.html#jls-15.12.2110 * <blockquote>111 * <p>Deciding whether a method is applicable will, in the case of generic methods (§8.4.4), require an analysis112 * of the type arguments. Type arguments may be passed explicitly or implicitly. If they are passed implicitly,113 * bounds of the type arguments must be inferred (§18 (Type Inference)) from the argument expressions.</p>114 *115 * <p>If several applicable methods have been identified during one of the three phases of applicability116 * testing, then the most specific one is chosen, as specified in section §15.12.2.5.</p>117 * </blockquote>118 *119 * https://docs.oracle.com/javase/specs/jls/se8/html/jls-15.html#jls-15.12.2.1120 * <blockquote>121 * <p>The definition of potential applicability goes beyond a basic arity check to also take into account122 * the presence and "shape" of functional interface target types. In some cases involving type argument123 * inference, a lambda expression appearing as a method invocation argument cannot be properly typed until124 * after overload resolution. These rules allow the form of the lambda expression to still be taken into125 * account, discarding obviously incorrect target types that might otherwise cause ambiguity errors.</p>126 * </blockquote>127 *128 * https://docs.oracle.com/javase/specs/jls/se8/html/jls-15.html#jls-15.12.2.5129 * <blockquote>130 * <p>One applicable method m1 is more specific than another applicable method m2, for an invocation with argument131 * expressions e1, ..., ek, if any of the following are true:132 * <ul>133 *134 * <li>m2 is generic, and m1 is inferred to be more specific than m2 for argument expressions e1, ..., ek135 * by §18.5.4.</li>136 * <li>m2 is not generic, and m1 and m2 are applicable by strict or loose invocation, and where m1 has formal137 * parameter types S1, ..., Sn and m2 has formal parameter types T1, ..., Tn, the type Si is more specific138 * than Ti for argument ei for all i (1 ⤠i ⤠n, n = k).</li>139 * <li>m2 is not generic, and m1 and m2 are applicable by variable arity invocation, and where the first k140 * variable arity parameter types of m1 are S1, ..., Sk and the first k variable arity parameter types of m2141 * are T1, ..., Tk, the type Si is more specific than Ti for argument ei for all i (1 ⤠i ⤠k).142 * Additionally, if m2 has k+1 parameters, then the k+1'th variable arity parameter type of m1 is a subtype143 * of the k+1'th variable arity parameter type of m2.</li>144 * </ul></p>145 *146 * <p>The above conditions are the only circumstances under which one method may be more specific than another.</p>147 *148 * <p>A type S is more specific than a type T for any expression if S <: T (§4.10).</p>149 * </blockquote>150 */151 public static class JLS_15_12_2_5_Java8_Test {152 @Before153 public void setUp() throws Exception {154 Assume.assumeTrue(ClassFileVersion.of(JLS_15_12_2_5_Java8_Test.class).isAtLeast(JAVA_V8));155 }156 @Test157 public void with_single_arg() throws Exception {158 SingleOverload mock = mock(SingleOverload.class);159 when(mock.oneArg(isNull())).thenReturn("ok");160 assertThat(mock.oneArg(null)).describedAs("Most specific method chosen for matcher and for null").isEqualTo("ok");161 }162 @Test163 public void with_single_arg_and_null_Object_reference() throws Exception {164 SingleOverload mock = mock(SingleOverload.class);165 when(mock.oneArg(isNull())).thenReturn("ok");166 Object arg = null;167 assertThat(mock.oneArg(arg)).describedAs("not the stubbed method").isEqualTo(null);...
setUp
Using AI Code Generation
1org.mockitousage.jls.JLS_15_12_2_5Test.setUp()2org.mockitousage.jls.JLS_15_12_2_5Test.setUp()3org.mockitousage.jls.JLS_15_12_2_5Test.setUp()4org.mockitousage.jls.JLS_15_12_2_5Test.setUp()5org.mockitousage.jls.JLS_15_12_2_5Test.setUp()6org.mockitousage.jls.JLS_15_12_2_5Test.setUp()7org.mockitousage.jls.JLS_15_12_2_5Test.setUp()8org.mockitousage.jls.JLS_15_12_2_5Test.setUp()9org.mockitousage.jls.JLS_15_12_2_5Test.setUp()10org.mockitousage.jls.JLS_15_12_2_5Test.setUp()11org.mockitousage.jls.JLS_15_12_2_5Test.setUp()12org.mockitousage.jls.JLS_15_12_2_5Test.setUp()13org.mockitousage.jls.JLS_15_12_2_5Test.setUp()14org.mockitousage.jls.JLS_15_12_2_5Test.setUp()15org.mockitousage.jls.JLS_15_12_2_5Test.setUp()16org.mockitousage.jls.JLS_15_12_2_5Test.setUp()17org.mockitousage.jls.JLS_15_12_2_5Test.setUp()18org.mockitousage.jls.JLS_15_12_2_5Test.setUp()19org.mockitousage.jls.JLS_15_12_2_5Test.setUp()20org.mockitousage.jls.JLS_15_12_2_5Test.setUp()21org.mockitousage.jls.JLS_15_12_2_5Test.setUp()22org.mockitousage.jls.JLS_15_12_2_5Test.setUp()23org.mockitousage.jls.JLS_15_12_2_5Test.setUp()24org.mockitousage.jls.JLS_15_12_2_5Test.setUp()
setUp
Using AI Code Generation
1 [junit] [junit] Testcase: testSetUp(org.mockitousage.jls.JLS_15_12_2_5Test): Caused an ERROR2 [junit] [junit] at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:55)3 [junit] [junit] at org.mockito.internal.creation.cglib.ClassImposterizer.imposterise(ClassImposterizer.java:42)4 [junit] [junit] at org.mockito.internal.creation.cglib.CglibMockMaker.createMock(CglibMockMaker.java:26)5 [junit] [junit] at org.mockito.internal.util.MockUtil.createMock(MockUtil.java:35)6 [junit] [junit] at org.mockito.internal.MockitoCore.mock(MockitoCore.java:59)7 [junit] [junit] at org.mockito.Mockito.mock(Mockito.java:1109)8 [junit] [junit] at org.mockito.Mockito.mock(Mockito.java:1068)9 [junit] [junit] at org.mockitousage.jls.JLS_15_12_2_5Test.setUp(JLS_15_12_2_5Test.java:10)10 [junit] [junit] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)11 [junit] [junit] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)12 [junit] [junit] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)13 [junit] [junit] at java.lang.reflect.Method.invoke(Method.java:597)14 [junit] [junit] at junit.framework.TestCase.runTest(TestCase.java:154)15 [junit] [junit] at junit.framework.TestCase.runBare(TestCase.java:127)16 [junit] [junit] at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:59)17 [junit] [junit] at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java
Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Get 100 minutes of automation test minutes FREE!!