components/camel-mongodb/src/test/java/org/apache/camel/component/mongodb/MongoDbReadPreferenceOptionTest.java

/*
 * 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
 *
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * See the License for the specific language governing permissions and
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package org.apache.camel.component.mongodb;

import com.mongodb.ReadPreference;
import org.apache.camel.Endpoint;
import org.apache.camel.ResolveEndpointFailedException;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;

public class MongoDbReadPreferenceOptionTest extends AbstractMongoDbTest {

    private MongoDbEndpoint endpoint;

    @Test
    public void testInvalidReadPreferenceOptionValue() throws Exception {
        try {
            createMongoDbEndpoint("mongodb:myDb?database={{mongodb.testDb}}&readPreference=foo");
            fail("Should have thrown exception");
        } catch (ResolveEndpointFailedException refe) {
            assertTrue(refe.getMessage().endsWith("Unknown parameters=[{readPreference=foo}]"), refe.getMessage());
        }
    }

    @Test
    public void testNoReadPreferenceOptionValue() throws Exception {
        endpoint = createMongoDbEndpoint("mongodb:myDb?database={{mongodb.testDb}}");
        assertSame(ReadPreference.primary(), endpoint.getReadPreference());
        assertSame(ReadPreference.primary(), endpoint.getMongoConnection().getReadPreference());
        // the default is primary
    }

    @Test
    public void testPrimaryReadPreferenceOptionValue() throws Exception {
        endpoint = createMongoDbEndpoint("mongodb:myDbP?database={{mongodb.testDb}}");
        assertSame(ReadPreference.primary(), endpoint.getReadPreference());
        assertSame(ReadPreference.primary(), endpoint.getMongoConnection().getReadPreference());
    }

    @Test
    public void testPrimaryPreferredReadPreferenceOptionValue() throws Exception {
        endpoint = createMongoDbEndpoint("mongodb:myDbPP?database={{mongodb.testDb}}");
        assertSame(ReadPreference.primaryPreferred(), endpoint.getReadPreference());
        assertSame(ReadPreference.primaryPreferred(), endpoint.getMongoConnection().getReadPreference());
    }

    @Test
    public void testSecondaryReadPreferenceOptionValue() throws Exception {
        endpoint = createMongoDbEndpoint("mongodb:myDbS?database={{mongodb.testDb}}");
        assertSame(ReadPreference.secondary(), endpoint.getReadPreference());
        assertSame(ReadPreference.secondary(), endpoint.getMongoConnection().getReadPreference());
    }

    @Test
    public void testSecondaryPreferredReadPreferenceOptionValue() throws Exception {
        endpoint = createMongoDbEndpoint("mongodb:myDbSP?database={{mongodb.testDb}}");
        assertSame(ReadPreference.secondaryPreferred(), endpoint.getReadPreference());
        assertSame(ReadPreference.secondaryPreferred(), endpoint.getMongoConnection().getReadPreference());
    }

    @Test
    public void testNearestReadPreferenceOptionValue() throws Exception {
        endpoint = createMongoDbEndpoint("mongodb:myDbN?database={{mongodb.testDb}}");
        assertSame(ReadPreference.nearest(), endpoint.getReadPreference());
        assertSame(ReadPreference.nearest(), endpoint.getMongoConnection().getReadPreference());
    }

    private MongoDbEndpoint createMongoDbEndpoint(String uri) throws Exception {
        Endpoint mongoEndpoint = context().getComponent("mongodb").createEndpoint(uri);
        mongoEndpoint.start();
        return MongoDbEndpoint.class.cast(mongoEndpoint);

    }

}