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SubclassByteBuddyMockMakerTest.java
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SubclassByteBuddyMockMakerTest.java
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/*
* Copyright (c) 2017 Mockito contributors
* This program is made available under the terms of the MIT License.
*/
package org.mockito.internal.creation.bytebuddy;
import static org.assertj.core.api.Assertions.assertThat;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Observable;
import java.util.Observer;
import net.bytebuddy.ByteBuddy;
import net.bytebuddy.ClassFileVersion;
import net.bytebuddy.description.modifier.TypeManifestation;
import net.bytebuddy.dynamic.DynamicType;
import org.junit.Test;
import org.mockito.internal.creation.MockSettingsImpl;
import org.mockito.plugins.MockMaker;
public class SubclassByteBuddyMockMakerTest
extends AbstractByteBuddyMockMakerTest<SubclassByteBuddyMockMaker> {
public SubclassByteBuddyMockMakerTest() {
super(new SubclassByteBuddyMockMaker());
}
@Test
public void is_type_mockable_excludes_primitive_wrapper_classes() {
MockMaker.TypeMockability mockable = mockMaker.isTypeMockable(Integer.class);
assertThat(mockable.mockable()).isFalse();
assertThat(mockable.nonMockableReason()).contains("final");
}
@Test
public void is_type_mockable_excludes_sealed_classes() {
// is only supported on Java 17 and later
if (ClassFileVersion.ofThisVm().isAtMost(ClassFileVersion.JAVA_V16)) {
return;
}
DynamicType.Builder<Object> base = new ByteBuddy().subclass(Object.class);
DynamicType.Unloaded<Object> dynamic =
new ByteBuddy()
.subclass(Object.class)
.permittedSubclass(base.toTypeDescription())
.make();
Class<?> type =
new ByteBuddy()
.subclass(base.toTypeDescription())
.merge(TypeManifestation.FINAL)
.make()
.include(dynamic)
.load(null)
.getLoaded();
MockMaker.TypeMockability mockable = mockMaker.isTypeMockable(type);
assertThat(mockable.mockable()).isFalse();
assertThat(mockable.nonMockableReason()).contains("sealed");
}
@Test
public void is_type_mockable_excludes_primitive_classes() {
MockMaker.TypeMockability mockable = mockMaker.isTypeMockable(int.class);
assertThat(mockable.mockable()).isFalse();
assertThat(mockable.nonMockableReason()).contains("primitive");
}
@Test
public void is_type_mockable_allow_anonymous() {
Observer anonymous =
new Observer() {
@Override
public void update(Observable o, Object arg) {}
};
MockMaker.TypeMockability mockable = mockMaker.isTypeMockable(anonymous.getClass());
assertThat(mockable.mockable()).isTrue();
assertThat(mockable.nonMockableReason()).contains("");
}
@Test
public void is_type_mockable_give_empty_reason_if_type_is_mockable() {
MockMaker.TypeMockability mockable = mockMaker.isTypeMockable(SomeClass.class);
assertThat(mockable.mockable()).isTrue();
assertThat(mockable.nonMockableReason()).isEqualTo("");
}
@Test
public void mock_type_with_annotations() throws Exception {
MockSettingsImpl<ClassWithAnnotation> mockSettings =
new MockSettingsImpl<ClassWithAnnotation>();
mockSettings.setTypeToMock(ClassWithAnnotation.class);
ClassWithAnnotation proxy = mockMaker.createMock(mockSettings, dummyHandler());
assertThat(proxy.getClass().isAnnotationPresent(SampleAnnotation.class)).isTrue();
assertThat(proxy.getClass().getAnnotation(SampleAnnotation.class).value()).isEqualTo("foo");
assertThat(
proxy.getClass()
.getMethod("sampleMethod")
.isAnnotationPresent(SampleAnnotation.class))
.isTrue();
assertThat(
proxy.getClass()
.getMethod("sampleMethod")
.getAnnotation(SampleAnnotation.class)
.value())
.isEqualTo("bar");
}
@Test
public void mock_type_without_annotations() throws Exception {
MockSettingsImpl<ClassWithAnnotation> mockSettings =
new MockSettingsImpl<ClassWithAnnotation>();
mockSettings.setTypeToMock(ClassWithAnnotation.class);
mockSettings.withoutAnnotations();
ClassWithAnnotation proxy = mockMaker.createMock(mockSettings, dummyHandler());
assertThat(proxy.getClass().isAnnotationPresent(SampleAnnotation.class)).isFalse();
assertThat(
proxy.getClass()
.getMethod("sampleMethod")
.isAnnotationPresent(SampleAnnotation.class))
.isFalse();
}
@Override
protected Class<?> mockTypeOf(Class<?> type) {
return type.getSuperclass();
}
@Retention(RetentionPolicy.RUNTIME)
public @interface SampleAnnotation {
String value();
}
@SampleAnnotation("foo")
public static class ClassWithAnnotation {
@SampleAnnotation("bar")
public void sampleMethod() {
throw new UnsupportedOperationException();
}
}
}