/*
 * Copyright 2014-2022 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.data.rest.webmvc;

import static org.assertj.core.api.Assertions.*;
import static org.mockito.Mockito.*;
import static org.springframework.http.HttpMethod.*;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.mockito.stubbing.Answer;
import org.springframework.data.mapping.PersistentEntity;
import org.springframework.data.repository.support.RepositoryInvoker;
import org.springframework.data.rest.core.mapping.ResourceMetadata;
import org.springframework.data.rest.core.mapping.ResourceType;
import org.springframework.web.HttpRequestMethodNotSupportedException;

/**
 * Unit tests for {@link RootResourceInformation}.
 *
 * @author Oliver Gierke
 */
@ExtendWith(MockitoExtension.class)
class RootResourceInformationUnitTests {

	@Mock ResourceMetadata metadata;
	@Mock PersistentEntity<?, ?> entity;
	RepositoryInvoker invoker;

	RootResourceInformation information;

	@BeforeEach
	void setUp() {

		this.invoker = mock(RepositoryInvoker.class, new DefaultBooleanToTrue());
		this.information = new RootResourceInformation(metadata, entity, invoker);
	}

	@Test // DATAREST-330
	void throwsExceptionOnVerificationIfResourceIsNotExported() throws HttpRequestMethodNotSupportedException {

		when(metadata.isExported()).thenReturn(false);

		assertThatExceptionOfType(ResourceNotFoundException.class) //
				.isThrownBy(() -> information.verifySupportedMethod(HEAD, ResourceType.COLLECTION));

	}

	/**
	 * Helper class to default boolean methods to return {@literal true} instead of {@literal false} by default.
	 *
	 * @author Oliver Gierke
	 */
	static class DefaultBooleanToTrue implements Answer<Object> {

		private static final Answer<Object> DEFAULT = Mockito.RETURNS_DEFAULTS;

		@Override
		public Object answer(InvocationOnMock invocation) throws Throwable {

			Class<?> returnType = invocation.getMethod().getReturnType();
			return returnType.equals(Boolean.class) || returnType.equals(boolean.class) ? true : DEFAULT.answer(invocation);
		}
	}
}
