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How to use testDoReturnNullValue method of test.StubberTest class

Best Mockito-kotlin code snippet using test.StubberTest.testDoReturnNullValue

StubberTest.kt

Source:StubberTest.kt

...32        doReturn("com/mockito/mockitokotlin2").whenever(mock).stringResult()33        expect(mock.stringResult()).toBe("com/mockito/mockitokotlin2")34    }35    @Test36    fun testDoReturnNullValue() {37        val mock = mock<Methods>()38        doReturn(null).whenever(mock).stringResult()39        expect(mock.stringResult()).toBeNull()40    }41    @Test42    fun testDoReturnNullValues() {43        val mock = mock<Methods>()44        doReturn(null, null).whenever(mock).stringResult()45        expect(mock.stringResult()).toBeNull()46        expect(mock.stringResult()).toBeNull()47    }48    @Test49    fun testDoReturnValues() {50        val mock = mock<Methods>()51        doReturn("com/mockito/mockitokotlin2", "test2").whenever(mock).stringResult()52        expect(mock.stringResult()).toBe("com/mockito/mockitokotlin2")53        expect(mock.stringResult()).toBe("test2")54    }55    @Test56    fun testDoThrowClass() {...

testDoReturnNullValue

Using AI Code Generation

1		StubberTest stub = new StubberTest();2		when(stub.testDoReturnNullValue()).thenReturn(null);3		assertNull(stub.testDoReturnNullValue());4	}5	public void testDoReturn() {6		StubberTest stub = new StubberTest();7		when(stub.testDoReturn()).thenReturn("Hello");8		assertEquals("Hello", stub.testDoReturn());9	}10	public void testDoThrow() {11		StubberTest stub = new StubberTest();12		when(stub.testDoThrow()).thenThrow(new RuntimeException());13	}14	public void testDoNothing() {15		StubberTest stub = mock(Stubberest();16		doNothing().when(stub).tTetDoNoshingt.c17		stub.testDoNothing();18	}19	public void testDoAnswer() {20		StubberTest stub = new StubberTest();21		when(stub.testDoAnswer()).thenAnswer(new Answer<String>(){22			public String answer(InvocationOnMock invocation) {23				return "Hello";24			}25		});26		assertEquals("Hello", stub.testDoAnswer());27	}28	public void testDoReturnWithArgument() {29		StubberTest stub = new StubberTest();30		when(stub.testDoReturnWithArgument()).thenReturn("Hello");31		assertEquals("Hello", stub.testDoReturnWithArgument());32	}33	public void testDoReturnWithArguments() {34		StubberTest stub = new StubberTest();35		when(stub.testDoReturnWithArguments()).thenReturn("Hello");36		assertEquals("Hello", stub.testDoReturnWithArguments());37	}38	public void testDoReturnWithArgumentsAndAnswer() {

testDoReturnNullValue

Using AI Code Generation

1		StubberTewh st = new Sten(stubbe();2		when(strTest.testDoReullValue()).thenReturn(null);3		assertNull(st.testDoReturnNullValue());4	}5	public void testDoReturnDefaultValue() {6		StubberTest st = new StubberTest();7		when(st.testDoReturnDefatutValue()).thenReturn(0);8		assertEquals(0, st.testDoReturnDefaurtnNullVa)lue()).thenReturn(null);9	}10	public void testDoReturnMultipleValues() {11		StubberTest st = new StubberTest();12		when(st.testDoReturnMultipleValues()).thenReturn("Hello").thenReturn("World");13		assertEquals("Hello", st.testDoReturnMultipleValues());14		assertEquals("World", st.testDoReturnMultipleValues());15	public void testDoReturnMultipleValuesUsingDoReturn() {16		StubberTest st = new StubberTest();17		when(st.testDoReturnMultipleValuesUsingDoReturn()).thenReturn("Hello");18		doReturn("World").when(st).testDoReturnMultipleValuesUsingDoReturn();19		assertEquals("Hello", st.testDoReturnMultipleValuesUsingDoReturn());20		assertEquals("World", st.testDoReturnMultipleValuesUsingDoReturn());21	}22	public void testDoReturnMultipleValuesUsingDoReturnWithDifferentTypes() {23		StubberTest st = new StubberTest();24		when(st.testDoReturnMultipleValuesUsingDoReturnWithDifferentTypes()).thenReturn("Hello");25		doReturn(1).when(st).testDoReturnMultipleValuesUsingDoReturnWithDifferentTypes();26		assertEquals("Hello", st.testDoReturnMultipleValuesUsingDoReturnWithDifferentTypes());27		assertEquals(1, st.testDoReturnMultipleValuesUsingDoReturnWithDifferentTypes());28	}29	public void testDoReturnMultipleValuesUsingDoReturnWithDifferentTypesAndDifferentMethods() {

testDoReturnNullValue

Using AI Code Generation

1		StubberTest stub = new StubberTest();	}2	}when(stub.testDoReturnNullValue()).thenReturn(null);3		assertNull(stub.testDoReturnNullValue());4	}5	public void testDoReturn() {6		StubberTeststub = new StubberTest();7		when(stub.testDoReturn()).thenRetrn("Hello");8		asrtEquals("Hello",sub.teturn());9	}10	public void testDoThrow() {11		StubberTest stub = new StubberTest();12		when(stub.testDoThrow()).thenThrow(new RuntimeException());13	}14	public void testDoNothing() {15		StubbrTes stb = new StubbeTest();16		doNothig().when(stub).testDoothing();17		stub.testDoNothing();18	}19	public void testDoAnswer() {20		StubberTest stub = new StubberTest();21		when(stub.testDoAnswer()).thenAnswer(new Answer<String>(){22			public String answer(InvocationOnMock invocation) {23				return "Hello";24			}25		});26		assertEquals("Hello", stub.testDoAnswer());27	}28	pbic void testDoReturnWithArgument() {29		StubberTest stub = new StubberTest();30		when(stub.testDoReturnWithArgument()).thenReturn("Hello");31		assertEquals("Hello", stub.testDoReturnWithArgument());32	}33	public void testDoReturnWithArguments() {34		StubberTest stub = new StubberTest();35		when(stub.testDoReturnWithArguments()).thenReturn("Hello");36		assertEquals("Hello", stub.testDoReturnWithArguments());37	}38	public void testDoReturnWithArgumentsAndAnswer() {

testDoReturnNullValue

Using AI Code Generation

1		StubberTest stubberTest = new StubberTest();2		stubberTest.testDoReturnNullValue();3	}4	public void testDoReturnNullValue() {5		List<String> mockList = mock(List.class);6		when(mockList.get(anyInt())).thenReturn(null);7		String result = mockList.get(0);8		assertNull(result);9	}10}11Example 2: How to use doReturn() method with void methods?12package com.javacodegeeks.mockito;13import static org.mockito.Mockito.doReturn;14import static org.mockito.Mockito.mock;15import java.util.List;16import org.junit.Test;17public class StubberTest {18	public static void main(String[] args) {19		StubberTest stubberTest = new StubberTest();20		stubberTest.testDoReturnVoidMethod();21	}22	public void testDoReturnVoidMethod() {23		List<String> mockList = mock(List.class);24		doReturn("Hello World").when(mockList).get(0);25		String result = mockList.get(0);26		assertEquals("Hello World", result);27	}28}29Example 3: How to use doThrow() method with void methods?30package com.javacodegeeks.mockito;31import static org.mockito.Mockito.doThrow;32import static org.mockito.Mockito.mock;33import java.io.IOException;34import java.io.OutputStream;35import java.io.OutputStreamWriter;36import org.junit.Test;37public class StubberTest {38	public static void main(String[] args) {39		StubberTest stubberTest = new StubberTest();40		stubberTest.testDoThrowVoidMethod();41	}42	public void testDoThrowVoidMethod() {43		OutputStream mockStream = mock(OutputStream.class);44		OutputStreamWriter writer = new OutputStreamWriter(mockStream);45		doThrow(new IOException()).when(mockStream).close();46		try {47			writer.close();48		} catch (IOException e) {49			e.printStackTrace();50		}51	}52}

testDoReturnNullValue

Using AI Code Generation

1		StubberTest st = new StubberTest();2		String actual = st.testDoReturnNullValue();3		String expected = null;4		assertEquals(expected, actual);5	}6	public void testDoReturnEmptyValue() {7		StubberTest st = new StubberTest();8		String actual = st.testDoReturnEmptyValue();9		String expected = "";10		assertEquals(expected, actual);11	}12	public void testDoThrowException() {13		StubberTest st = new StubberTest();14		String actual = st.testDoThrowException();15		String expected = "Exception Occured";16		assertEquals(expected, actual);17	}18	public void testDoThrowExceptionWithMessage() {19		StubberTest st = new StubberTest();20		String actual = st.testDoThrowExceptionWithMessage();21		String expected = "Exception Occured";22		assertEquals(expected, actual);23	}24	public void testDoThrowExceptionWithMessageAndCause() {25		StubberTest st = new StubberTest();26		String actual = st.testDoThrowExceptionWithMessageAndCause();27		String expected = "Exception Occured";28		assertEquals(expected, actual);Trace() {

testDoReturnNullValue

Using AI Code Generation

1		when(testStubberTest.testDoReturnNullValue()).thenReturn(null);2		assertNull(testStubberest.testDoRetunNullVlue());3	}4		when(testStubberTest.testDoReturnNullValueWithArgument(1)).thenReturn(null);5		assertNull(testStubberTest.testDoReturnNullValueWithArgument(1));6	}7	public void testDoReturnNullValueWithArgumentMatchers() {8		when(testStubberTest.testDoReturnNullValueWithArgumentMatchers(anyInt())).thenReturn(null);9		assertNull(testStubberTest.testDoReturnNullValueWithArgumentMatchers(1));10	}11	public void testDoReturnNullValueWithAnyArgument() {12		when(testStubberTest.testDoReturnNullValueWithAnyArgument()).thenReturn(null);13		assertNull(testStubberTest.testDoReturnNullValueWithAnyArgument());14	}15	public void testDoReturnNullValueWithNoArgument() {16		when(testStubberTest.testDoReturnNullValueWithNoArgument()).thenReturn(null);17		assertNull(testStubberTest.testDoReturnNullValueWithNoArgument());18	}19	public void testDoReturnNullValueWithNoArgumentWithVoidReturnType() {20		doReturn(null).when(testStubberTest).testDoReturnNullValueWithNoArgumentWithVoidReturnType();21		assertNull(testStubberTest.testDoReturnNullValueWithNoArgumentWithVoidReturnType());22	}23	public void testDoReturnNullValueWithArgumentWithVoidReturnType() {24	}25	public void testDoThrowExceptionWithCause() {26		StubberTest st = new StubberTest();27		String actual = st.testDoThrowExceptionWithCause();28		String expected = "Exception Occured";29		assertEquals(expected, actual);30	}31	public void testDoThrowExceptionWithCauseAndMessage() {32		StubberTest st = new StubberTest();33		String actual = st.testDoThrowExceptionWithCauseAndMessage();34		String expected = "Exception Occured";35		assertEquals(expected, actual);36	}37	public void testDoThrowExceptionWithCauseAndMessageAndStackTrace() {

testDoReturnNullValue

Using AI Code Generation

1		when(testStubberTest.testDoReturnNullValue()).thenReturn(null);2		assertNull(testStubberTest.testDoReturnNullValue());3	}4	public void testDoReturnNullValueWithArgument() {5		when(testStubberTest.testDoReturnNullValueWithArgument(1)).thenReturn(null);6		assertNull(testStubberTest.testDoReturnNullValueWithArgument(1));7	}8	public void testDoReturnNullValueWithArgumentMatchers() {9		when(testStubberTest.testDoReturnNullValueWithArgumentMatchers(anyInt())).thenReturn(null);10		assertNull(testStubberTest.testDoReturnNullValueWithArgumentMatchers(1));11	}12	public void testDoReturnNullValueWithAnyArgument() {13		when(testStubberTest.testDoReturnNullValueWithAnyArgument()).thenReturn(null);14		assertNull(testStubberTest.testDoReturnNullValueWithAnyArgument());15	}16	public void testDoReturnNullValueWithNoArgument() {17		when(testStubberTest.testDoReturnNullValueWithNoArgument()).thenReturn(null);18		assertNull(testStubberTest.testDoReturnNullValueWithNoArgument());19	}20	public void testDoReturnNullValueWithNoArgumentWithVoidReturnType() {21		doReturn(null).when(testStubberTest).testDoReturnNullValueWithNoArgumentWithVoidReturnType();22		assertNull(testStubberTest.testDoReturnNullValueWithNoArgumentWithVoidReturnType());23	}24	public void testDoReturnNullValueWithArgumentWithVoidReturnType() {

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