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package junitparams;
import junitparams.internal.ParameterisedTestMethodRunner;
import junitparams.internal.TestMethod;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import org.junit.runners.model.FrameworkMethod;
import org.junit.runners.model.TestClass;
import java.lang.reflect.Method;
import static org.assertj.core.api.Assertions.assertThat;
@RunWith(JUnitParamsRunner.class)
public class ParametersReaderProvidersTest {
@Rule
public ExpectedException exception = ExpectedException.none();
@Test
@Parameters(source = SingleParamSetProvider.class)
public void oneParamSetFromClass(String a, String b) {
assertThat(a).isEqualTo("a");
assertThat(b).isEqualTo("b");
}
public static class SingleParamSetProvider {
public static Object[] provideOneParamSetSameTypes() {
return new Object[]{"a", "b"};
}
}
@Test
public void shouldPutProviderClassNameInExceptionMessageForProviderWithNoValidMethods() {
ParameterisedTestMethodRunner runner = new ParameterisedTestMethodRunner(getTestMethodWithInvalidProvider());
exception.expect(RuntimeException.class);
exception.expectMessage(ProviderClassWithNoValidMethods.class.getName());
runner.method.parametersSets();
}
private TestMethod getTestMethodWithInvalidProvider() {
// Bug in original code relied on order of Class.getMethods() which is undefined.
try {
Method testMethod = TestClassWithProviderClassWithNoValidMethods.class
.getDeclaredMethod("shouldDoNothingItsJustToConnectTestClassWithProvider");
return new TestMethod(new FrameworkMethod(testMethod), new TestClass(TestClassWithProviderClassWithNoValidMethods.class));
} catch (NoSuchMethodException e) {
throw new RuntimeException("Mismatch between method and test class", e);
}
}
@RunWith(JUnitParamsRunner.class)
static class TestClassWithProviderClassWithNoValidMethods {
@Test
@Parameters(source = ProviderClassWithNoValidMethods.class)
public void shouldDoNothingItsJustToConnectTestClassWithProvider() {
}
}
static class ProviderClassWithNoValidMethods {
}
@Test
@Parameters(source = OneIntegerProvider.class)
public void providedPrimitiveParams(int integer) {
assertThat(integer).isLessThan(4);
}
public static class OneIntegerProvider {
public static Object[] provideTwoNumbers() {
return new Object[]{new Object[]{1}, new Object[]{2}};
}
public static Object[] provideOneNumber() {
return new Object[]{new Object[]{3}};
}
}
@Test
@Parameters(source = DomainObjectProvider.class)
public void providedDomainParams(DomainClass object1, DomainClass object2) {
assertThat(object1.toString()).isEqualTo("testNameOne");
assertThat(object2.toString()).isEqualTo("testNameTwo");
}
public static class DomainObjectProvider {
public static Object[] provideDomainObject() {
return new Object[]{new Object[]{
new DomainClass("testNameOne"),
new DomainClass("testNameTwo")}};
}
}
public static class DomainClass {
private final String name;
public DomainClass(String name) {
this.name = name;
}
@Override
public String toString() {
return name;
}
}
}
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