cassandra-trunk/test/unit/org/apache/cassandra/db/MutationExceededMaxSizeExceptionTest.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
 *
 * Unless required by applicable law or agreed to in writing, software
 * 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.cassandra.db;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.junit.Test;

import static org.apache.cassandra.db.MutationExceededMaxSizeException.makeTopKeysString;
import static org.junit.Assert.*;

public class MutationExceededMaxSizeExceptionTest
{

    @Test
    public void testMakePKString()
    {
        List<String> keys = Arrays.asList("aaa", "bbb", "ccc");

        assertEquals(0, makeTopKeysString(new ArrayList<>(), 1024).length());
        assertEquals("aaa and 2 more.", makeTopKeysString(new ArrayList<>(keys), 0));
        assertEquals("aaa and 2 more.", makeTopKeysString(new ArrayList<>(keys), 5));
        assertEquals("aaa, bbb, ccc", makeTopKeysString(new ArrayList<>(keys), 13));
        assertEquals("aaa, bbb, ccc", makeTopKeysString(new ArrayList<>(keys), 1024));
        assertEquals("aaa, bbb and 1 more.", makeTopKeysString(new ArrayList<>(keys), 8));
        assertEquals("aaa, bbb and 1 more.", makeTopKeysString(new ArrayList<>(keys), 10));
    }
}
