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ParameterizedAssertionErrorTest.java
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ParameterizedAssertionErrorTest.java
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package org.junit.tests.experimental.theories;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.not;
import static org.junit.Assert.assertThat;
import static org.junit.Assume.assumeThat;
import static org.junit.internal.matchers.StringContains.containsString;
import org.junit.Test;
import org.junit.experimental.theories.DataPoint;
import org.junit.experimental.theories.Theories;
import org.junit.experimental.theories.Theory;
import org.junit.experimental.theories.internal.ParameterizedAssertionError;
import org.junit.runner.RunWith;
@RunWith(Theories.class)
public class ParameterizedAssertionErrorTest {
@DataPoint
public static final String METHOD_NAME= "methodName";
@DataPoint
public static final NullPointerException NULL_POINTER_EXCEPTION= new NullPointerException();
@DataPoint
public static Object[] NO_OBJECTS= new Object[0];
@DataPoint
public static ParameterizedAssertionError A= new ParameterizedAssertionError(
NULL_POINTER_EXCEPTION, METHOD_NAME);
@DataPoint
public static ParameterizedAssertionError B= new ParameterizedAssertionError(
NULL_POINTER_EXCEPTION, METHOD_NAME);
@DataPoint
public static ParameterizedAssertionError B2= new ParameterizedAssertionError(
NULL_POINTER_EXCEPTION, "methodName2");
@Theory
public void equalParameterizedAssertionErrorsHaveSameToString(
ParameterizedAssertionError a, ParameterizedAssertionError b) {
assumeThat(a, is(b));
assertThat(a.toString(), is(b.toString()));
}
@Theory
public void differentParameterizedAssertionErrorsHaveDifferentToStrings(
ParameterizedAssertionError a, ParameterizedAssertionError b) {
assumeThat(a, not(b));
assertThat(a.toString(), not(b.toString()));
}
@Theory
public void equalsReturnsTrue(Throwable targetException, String methodName,
Object[] params) {
assertThat(new ParameterizedAssertionError(targetException, methodName,
params), is(new ParameterizedAssertionError(targetException,
methodName, params)));
}
@Theory(nullsAccepted= false)
public void buildParameterizedAssertionError(String methodName, String param) {
assertThat(new ParameterizedAssertionError(new RuntimeException(),
methodName, param).toString(), containsString(methodName));
}
@Test
public void canJoinWhenToStringFails() {
assertThat(ParameterizedAssertionError.join(" ", new Object() {
@Override
public String toString() {
throw new UnsupportedOperationException();
}
}), is("[toString failed]"));
}
}