/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 *     http://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.apache.dubbo.validation.filter;

import org.apache.dubbo.common.URL;
import org.apache.dubbo.rpc.AppResponse;
import org.apache.dubbo.rpc.Invoker;
import org.apache.dubbo.rpc.Result;
import org.apache.dubbo.rpc.RpcException;
import org.apache.dubbo.rpc.RpcInvocation;
import org.apache.dubbo.validation.Validation;
import org.apache.dubbo.validation.Validator;

import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.core.Is.is;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;

class ValidationFilterTest {
    private Invoker<?> invoker = mock(Invoker.class);
    private Validation validation = mock(Validation.class);
    private Validator validator = mock(Validator.class);
    private RpcInvocation invocation = mock(RpcInvocation.class);

    private ValidationFilter validationFilter;

    @BeforeEach
    public void setUp() {
        this.validationFilter = new ValidationFilter();
    }

    @Test
    void testItWithNotExistClass() {
        URL url = URL.valueOf("test://test:11/test?validation=true");

        given(validation.getValidator(url)).willThrow(new IllegalStateException("Not found class test, cause: test"));
        given(invoker.invoke(invocation)).willReturn(new AppResponse("success"));
        given(invoker.getUrl()).willReturn(url);
        given(invocation.getMethodName()).willReturn("echo1");
        given(invocation.getParameterTypes()).willReturn(new Class<?>[] {String.class});
        given(invocation.getArguments()).willReturn(new Object[] {"arg1"});

        validationFilter.setValidation(validation);
        Result result = validationFilter.invoke(invoker, invocation);

        assertThat(result.getException().getMessage(), is("Not found class test, cause: test"));
    }

    @Test
    void testItWithExistClass() {
        URL url = URL.valueOf("test://test:11/test?validation=true");

        given(validation.getValidator(url)).willReturn(validator);
        given(invoker.invoke(invocation)).willReturn(new AppResponse("success"));
        given(invoker.getUrl()).willReturn(url);
        given(invocation.getMethodName()).willReturn("echo1");
        given(invocation.getParameterTypes()).willReturn(new Class<?>[] {String.class});
        given(invocation.getArguments()).willReturn(new Object[] {"arg1"});

        validationFilter.setValidation(validation);
        Result result = validationFilter.invoke(invoker, invocation);

        assertThat(String.valueOf(result.getValue()), is("success"));
    }

    @Test
    void testItWithoutUrlParameters() {
        URL url = URL.valueOf("test://test:11/test");

        given(validation.getValidator(url)).willReturn(validator);
        given(invoker.invoke(invocation)).willReturn(new AppResponse("success"));
        given(invoker.getUrl()).willReturn(url);
        given(invocation.getMethodName()).willReturn("echo1");
        given(invocation.getParameterTypes()).willReturn(new Class<?>[] {String.class});
        given(invocation.getArguments()).willReturn(new Object[] {"arg1"});

        validationFilter.setValidation(validation);
        Result result = validationFilter.invoke(invoker, invocation);

        assertThat(String.valueOf(result.getValue()), is("success"));
    }

    @Test
    void testItWhileMethodNameStartWithDollar() {
        URL url = URL.valueOf("test://test:11/test");

        given(validation.getValidator(url)).willReturn(validator);
        given(invoker.invoke(invocation)).willReturn(new AppResponse("success"));
        given(invoker.getUrl()).willReturn(url);
        given(invocation.getMethodName()).willReturn("$echo1");
        given(invocation.getParameterTypes()).willReturn(new Class<?>[] {String.class});
        given(invocation.getArguments()).willReturn(new Object[] {"arg1"});

        validationFilter.setValidation(validation);
        Result result = validationFilter.invoke(invoker, invocation);

        assertThat(String.valueOf(result.getValue()), is("success"));
    }

    @Test
    void testItWhileThrowoutRpcException() {
        Assertions.assertThrows(RpcException.class, () -> {
            URL url = URL.valueOf("test://test:11/test?validation=true");

            given(validation.getValidator(url)).willThrow(new RpcException("rpc exception"));
            given(invoker.invoke(invocation)).willReturn(new AppResponse("success"));
            given(invoker.getUrl()).willReturn(url);
            given(invocation.getMethodName()).willReturn("echo1");
            given(invocation.getParameterTypes()).willReturn(new Class<?>[] {String.class});
            given(invocation.getArguments()).willReturn(new Object[] {"arg1"});

            validationFilter.setValidation(validation);
            validationFilter.invoke(invoker, invocation);
        });
    }
}
