/*
 * Copyright 2012-2020 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.boot.web.servlet.error;

import java.util.EnumSet;

import org.junit.jupiter.api.Test;

import org.springframework.boot.web.error.ErrorAttributeOptions;
import org.springframework.boot.web.error.ErrorAttributeOptions.Include;

import static org.assertj.core.api.Assertions.assertThat;

/**
 * Tests for {@link ErrorAttributeOptions}.
 *
 * @author Wanderlei Souza
 * @author Stephane Nicoll
 */
class ErrorAttributesOptionsTests {

	@Test
	void includingFromEmptyAttributesReturnAddedEntry() {
		ErrorAttributeOptions options = ErrorAttributeOptions.of(EnumSet.noneOf(Include.class));
		assertThat(options.including(Include.EXCEPTION).getIncludes()).containsOnly(Include.EXCEPTION);
	}

	@Test
	void includingFromMatchingAttributesDoesNotModifyOptions() {
		ErrorAttributeOptions options = ErrorAttributeOptions.of(EnumSet.of(Include.EXCEPTION, Include.STACK_TRACE));
		assertThat(options.including(Include.EXCEPTION).getIncludes()).containsOnly(Include.EXCEPTION,
				Include.STACK_TRACE);
	}

	@Test
	void excludingFromEmptyAttributesReturnEmptyList() {
		ErrorAttributeOptions options = ErrorAttributeOptions.of(EnumSet.noneOf(Include.class));
		assertThat(options.excluding(Include.EXCEPTION).getIncludes()).isEmpty();
	}

	@Test
	void excludingFromMatchingAttributesRemoveMatch() {
		ErrorAttributeOptions options = ErrorAttributeOptions.of(EnumSet.of(Include.EXCEPTION, Include.STACK_TRACE));
		assertThat(options.excluding(Include.EXCEPTION).getIncludes()).containsOnly(Include.STACK_TRACE);
	}

}
