/*
 *  Copyright 2016 SteelBridge Laboratories, LLC.
 *
 *  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
 *
 *  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.
 *
 *  For more information: http://steelbridgelabs.com
 */

package com.steelbridgelabs.oss.neo4j.structure;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Mockito;
import org.mockito.runners.MockitoJUnitRunner;
import org.neo4j.driver.Driver;
import org.neo4j.driver.Result;
import org.neo4j.driver.Session;
import org.neo4j.driver.Transaction;

import java.util.Collections;

/**
 * @author Rogelio J. Baucells
 */
@RunWith(MockitoJUnitRunner.class)
public class Neo4JGraphWhileExecuteTest {

    @Mock
    private Driver driver;

    @Mock
    private Session session;

    @Mock
    private Transaction transaction;

    @Mock
    private Neo4JElementIdProvider provider;

    @Mock
    private Result statementResult;

    @Test
    @SuppressWarnings("unchecked")
    public void givenTextCypherStatementShouldExecuteIt() {
        // arrange
        Mockito.when(driver.session(Mockito.any())).thenReturn(session);
        Mockito.when(session.beginTransaction()).thenAnswer(invocation -> transaction);
        Mockito.when(transaction.run(Mockito.any(String.class), Mockito.anyMap())).thenAnswer(invocation -> statementResult);
        Mockito.when(provider.fieldName()).thenAnswer(invocation -> "id");
        try (Neo4JGraph graph = new Neo4JGraph(driver, provider, provider)) {
            // act
            Result result = graph.execute("MATCH (n) RETURN n");
            // assert
            Assert.assertNotNull("Failed to execute CYPHER statement", result);
            Mockito.verify(transaction, Mockito.times(1)).run(Mockito.any(String.class), Mockito.anyMap());
        }
    }

    @Test
    @SuppressWarnings("unchecked")
    public void givenCypherStatementShouldExecuteIt() {
        // arrange
        Mockito.when(driver.session(Mockito.any())).thenReturn(session);
        Mockito.when(session.beginTransaction()).thenAnswer(invocation -> transaction);
        Mockito.when(transaction.run(Mockito.any(String.class), Mockito.anyMap())).thenAnswer(invocation -> statementResult);
        Mockito.when(provider.fieldName()).thenAnswer(invocation -> "id");
        try (Neo4JGraph graph = new Neo4JGraph(driver, provider, provider)) {
            // act
            Result result = graph.execute("MATCH (n) RETURN n");
            // assert
            Assert.assertNotNull("Failed to execute CYPHER statement", result);
            Mockito.verify(transaction, Mockito.times(1)).run(Mockito.any(String.class), Mockito.anyMap());
        }
    }

    @Test
    @SuppressWarnings("unchecked")
    public void givenCypherStatementWithParametersShouldExecuteIt() {
        // arrange
        Mockito.when(driver.session(Mockito.any())).thenReturn(session);
        Mockito.when(session.beginTransaction()).thenAnswer(invocation -> transaction);
        Mockito.when(transaction.run(Mockito.any(String.class), Mockito.anyMap())).thenAnswer(invocation -> statementResult);
        Mockito.when(provider.fieldName()).thenAnswer(invocation -> "id");
        try (Neo4JGraph graph = new Neo4JGraph(driver, provider, provider)) {
            // act
            Result result = graph.execute("MATCH (n{id: $id}) RETURN n", Collections.singletonMap("id", 10));
            // assert
            Assert.assertNotNull("Failed to execute CYPHER statement", result);
            Mockito.verify(transaction, Mockito.times(1)).run(Mockito.any(String.class), Mockito.anyMap());
        }
    }
}