/*
 * Copyright 2012-2019 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.cloud.function.compiler;

import java.util.function.Function;

import org.junit.jupiter.api.Test;

import org.springframework.cloud.function.core.FunctionFactoryUtils;

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

/**
 * @author Dave Syer
 *
 */
public class FunctionCompilerTests {

	@Test
	public void transformsFluxString() {
		CompiledFunctionFactory<Function<String, String>> compiled = new FunctionCompiler<String, String>(
				String.class.getName()).compile("foos",
						"flux -> flux.map(v -> v.toUpperCase())", "Flux<String>",
						"Flux<String>");
		assertThat(FunctionFactoryUtils.isFluxFunction(compiled.getFactoryMethod()))
				.isTrue();
	}

	@Test
	public void transformsString() {
		CompiledFunctionFactory<Function<String, String>> compiled = new FunctionCompiler<String, String>(
				String.class.getName()).compile("foos", "v -> v.toUpperCase()", "String",
						"String");
		assertThat(FunctionFactoryUtils.isFluxFunction(compiled.getFactoryMethod()))
				.isFalse();
		assertThat(compiled.getResult().apply("hello")).isEqualTo("HELLO");
	}

}
