How to use checkWithNullArgument_throwsError method of test.MatchersTest class

Best Mockito-kotlin code snippet using test.MatchersTest.checkWithNullArgument_throwsError

MatchersTest.kt

Source:MatchersTest.kt Github

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...192 }193 }194 }195 @Test196 fun checkWithNullArgument_throwsError() {197 mock<Methods>().apply {198 nullableString(null)199 expectErrorWithMessage("null").on {200 verify(this).nullableString(check {})201 }202 }203 }204 @Test205 fun isA_withNonNullableString() {206 mock<Methods>().apply {207 string("")208 verify(this).string(isA<String>())209 }210 }...

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checkWithNullArgument_throwsError

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1 public void checkWithNullArgument_throwsError() {2 String actual = null;3 String expected = "Hello";4 assertThrows(IllegalArgumentException.class, () -> Matchers.checkWithNullArgument(actual, expected));5 }6 public void checkWithNullArgument_throwsError() {7 String actual = "Hello";8 String expected = null;9 assertThrows(IllegalArgumentException.class, () -> Matchers.checkWithNullArgument(actual, expected));10 }11}

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checkWithNullArgument_throwsError

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1@Test(expected = AssertionError.class)2public void checkWithNullArgument_throwsError() throws Exception {3checkWithNullArgument_throwsError();4}5}6import org.junit.Rule;7import org.junit.Test;8import org.junit.rules.ExpectedException;9import static org.hamcrest.CoreMatchers.equalTo;10import static org.hamcrest.CoreMatchers.is;11import static org.hamcrest.CoreMatchers.nullValue;12import static org.hamcrest.CoreMatchers.startsWith;13import static org.junit.Assert.assertThat;14import static org.junit.rules.ExpectedException.none;15public class MatchersTest {16private static final String ERROR_MESSAGE = "error message";17public ExpectedException thrown = none();18public void checkWithNullArgument_throwsError() throws Exception {19thrown.expect(IllegalArgumentException.class);20thrown.expectMessage(equalTo(ERROR_MESSAGE));21checkWithNullArgument_throwsError();22}23private void checkWithNullArgument_throwsError() {24throw new IllegalArgumentException(ERROR_MESSAGE);25}26}27Let’s look at some examples of using the assertThat() method:

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checkWithNullArgument_throwsError

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1public void checkWithNullArgument_throwsError() {2 assertThat(() -> MatchersTest.checkWithNullArgument_throwsError(null), throwsException(IllegalArgumentException.class));3}4public void checkWithNullArgument_throwsError() {5 try {6 MatchersTest.checkWithNullArgument_throwsError(null);7 fail("Expected an IllegalArgumentException to be thrown");8 } catch (IllegalArgumentException anIllegalArgumentException) {9 assertThat(anIllegalArgumentException.getMessage(), is("argument cannot be null"));10 }11}12public void checkWithNullArgument_throwsError() {13 try {14 MatchersTest.checkWithNullArgument_throwsError(null);15 fail("Expected an IllegalArgumentException to be thrown");16 } catch (IllegalArgumentException anIllegalArgumentException) {17 assertThat(anIllegalArgumentException.getMessage(), is("argument cannot be null"));18 }19}20public void checkWithNullArgument_throwsError() {21 try {22 MatchersTest.checkWithNullArgument_throwsError(null);23 fail("Expected an IllegalArgumentException to be thrown");24 } catch (IllegalArgumentException anIllegalArgumentException) {25 assertThat(anIllegalArgumentException.getMessage(), is("argument cannot be null"));26 }27}28public void checkWithNullArgument_throwsError() {29 try {30 MatchersTest.checkWithNullArgument_throwsError(null);31 fail("Expected an IllegalArgumentException to be thrown");32 } catch (IllegalArgumentException anIllegalArgumentException) {33 assertThat(anIllegalArgumentException.getMessage(), is("argument cannot be null"));34 }35}36public void checkWithNullArgument_throwsError() {37 try {

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