/*
 * Copyright 2004-present 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.security.oauth2.jwt;

import org.junit.jupiter.api.Test;

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

class JwtTypeValidatorTests {

	@Test
	void constructorWhenJwtThenRequiresJwtOrEmpty() {
		Jwt.Builder jwt = TestJwts.jwt();
		JwtTypeValidator validator = JwtTypeValidator.jwt();
		assertThat(validator.validate(jwt.build()).hasErrors()).isFalse();
		jwt.header(JoseHeaderNames.TYP, "JWT");
		assertThat(validator.validate(jwt.build()).hasErrors()).isFalse();
		jwt.header(JoseHeaderNames.TYP, "at+jwt");
		assertThat(validator.validate(jwt.build()).hasErrors()).isTrue();
	}

	@Test
	void constructorWhenCustomThenEnforces() {
		Jwt.Builder jwt = TestJwts.jwt();
		JwtTypeValidator validator = new JwtTypeValidator("JOSE");
		assertThat(validator.validate(jwt.build()).hasErrors()).isTrue();
		jwt.header(JoseHeaderNames.TYP, "JWT");
		assertThat(validator.validate(jwt.build()).hasErrors()).isTrue();
		jwt.header(JoseHeaderNames.TYP, "JOSE");
		assertThat(validator.validate(jwt.build()).hasErrors()).isFalse();
	}

	@Test
	void validateWhenTypHeaderHasDifferentCaseThenSuccess() {
		Jwt.Builder jwt = TestJwts.jwt();
		JwtTypeValidator validator = new JwtTypeValidator("at+jwt");
		jwt.header(JoseHeaderNames.TYP, "AT+JWT");
		assertThat(validator.validate(jwt.build()).hasErrors()).isFalse();
	}

}
