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/
AttributeMethodsTests.java
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/
AttributeMethodsTests.java
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/*
* Copyright 2002-2022 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.core.annotation;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import org.junit.jupiter.api.Test;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;
/**
* Tests for {@link AttributeMethods}.
*
* @author Phillip Webb
*/
class AttributeMethodsTests {
@Test
void forAnnotationTypeWhenNullReturnsNone() {
AttributeMethods methods = AttributeMethods.forAnnotationType(null);
assertThat(methods).isSameAs(AttributeMethods.NONE);
}
@Test
void forAnnotationTypeWhenHasNoAttributesReturnsNone() {
AttributeMethods methods = AttributeMethods.forAnnotationType(NoAttributes.class);
assertThat(methods).isSameAs(AttributeMethods.NONE);
}
@Test
void forAnnotationTypeWhenHasMultipleAttributesReturnsAttributes() {
AttributeMethods methods = AttributeMethods.forAnnotationType(MultipleAttributes.class);
assertThat(methods.get("value").getName()).isEqualTo("value");
assertThat(methods.get("intValue").getName()).isEqualTo("intValue");
assertThat(getAll(methods)).flatExtracting(Method::getName).containsExactly("intValue", "value");
}
@Test
void indexOfNameReturnsIndex() {
AttributeMethods methods = AttributeMethods.forAnnotationType(MultipleAttributes.class);
assertThat(methods.indexOf("value")).isEqualTo(1);
}
@Test
void indexOfMethodReturnsIndex() throws Exception {
AttributeMethods methods = AttributeMethods.forAnnotationType(MultipleAttributes.class);
Method method = MultipleAttributes.class.getDeclaredMethod("value");
assertThat(methods.indexOf(method)).isEqualTo(1);
}
@Test
void sizeReturnsSize() {
AttributeMethods methods = AttributeMethods.forAnnotationType(MultipleAttributes.class);
assertThat(methods.size()).isEqualTo(2);
}
@Test
void canThrowTypeNotPresentExceptionWhenHasClassAttributeReturnsTrue() {
AttributeMethods methods = AttributeMethods.forAnnotationType(ClassValue.class);
assertThat(methods.canThrowTypeNotPresentException(0)).isTrue();
}
@Test
void canThrowTypeNotPresentExceptionWhenHasClassArrayAttributeReturnsTrue() {
AttributeMethods methods = AttributeMethods.forAnnotationType(ClassArrayValue.class);
assertThat(methods.canThrowTypeNotPresentException(0)).isTrue();
}
@Test
void canThrowTypeNotPresentExceptionWhenNotClassOrClassArrayAttributeReturnsFalse() {
AttributeMethods methods = AttributeMethods.forAnnotationType(ValueOnly.class);
assertThat(methods.canThrowTypeNotPresentException(0)).isFalse();
}
@Test
void hasDefaultValueMethodWhenHasDefaultValueMethodReturnsTrue() {
AttributeMethods methods = AttributeMethods.forAnnotationType(DefaultValueAttribute.class);
assertThat(methods.hasDefaultValueMethod()).isTrue();
}
@Test
void hasDefaultValueMethodWhenHasNoDefaultValueMethodsReturnsFalse() {
AttributeMethods methods = AttributeMethods.forAnnotationType(MultipleAttributes.class);
assertThat(methods.hasDefaultValueMethod()).isFalse();
}
@Test
void isValidWhenHasTypeNotPresentExceptionReturnsFalse() {
ClassValue annotation = mockAnnotation(ClassValue.class);
given(annotation.value()).willThrow(TypeNotPresentException.class);
AttributeMethods attributes = AttributeMethods.forAnnotationType(annotation.annotationType());
assertThat(attributes.isValid(annotation)).isFalse();
}
@Test
@SuppressWarnings({ "unchecked", "rawtypes" })
void isValidWhenDoesNotHaveTypeNotPresentExceptionReturnsTrue() {
ClassValue annotation = mock(ClassValue.class);
given(annotation.value()).willReturn((Class) InputStream.class);
AttributeMethods attributes = AttributeMethods.forAnnotationType(annotation.annotationType());
assertThat(attributes.isValid(annotation)).isTrue();
}
@Test
void validateWhenHasTypeNotPresentExceptionThrowsException() {
ClassValue annotation = mockAnnotation(ClassValue.class);
given(annotation.value()).willThrow(TypeNotPresentException.class);
AttributeMethods attributes = AttributeMethods.forAnnotationType(annotation.annotationType());
assertThatIllegalStateException().isThrownBy(() -> attributes.validate(annotation));
}
@Test
@SuppressWarnings({ "unchecked", "rawtypes" })
void validateWhenDoesNotHaveTypeNotPresentExceptionThrowsNothing() {
ClassValue annotation = mockAnnotation(ClassValue.class);
given(annotation.value()).willReturn((Class) InputStream.class);
AttributeMethods attributes = AttributeMethods.forAnnotationType(annotation.annotationType());
attributes.validate(annotation);
}
private List<Method> getAll(AttributeMethods attributes) {
List<Method> result = new ArrayList<>(attributes.size());
for (int i = 0; i < attributes.size(); i++) {
result.add(attributes.get(i));
}
return result;
}
@SuppressWarnings({ "unchecked", "rawtypes" })
private <A extends Annotation> A mockAnnotation(Class<A> annotationType) {
A annotation = mock(annotationType);
given(annotation.annotationType()).willReturn((Class) annotationType);
return annotation;
}
@Retention(RetentionPolicy.RUNTIME)
@interface NoAttributes {
}
@Retention(RetentionPolicy.RUNTIME)
@interface MultipleAttributes {
int intValue();
String value();
}
@Retention(RetentionPolicy.RUNTIME)
@interface ValueOnly {
String value();
}
@Retention(RetentionPolicy.RUNTIME)
@interface NonValueOnly {
String test();
}
@Retention(RetentionPolicy.RUNTIME)
@interface ClassValue {
Class<?> value();
}
@Retention(RetentionPolicy.RUNTIME)
@interface ClassArrayValue {
Class<?>[] value();
}
@Retention(RetentionPolicy.RUNTIME)
@interface DefaultValueAttribute {
String one();
String two();
String three() default "3";
}
}