DivolteIdentifierTest.java

/*
 * Copyright 2014 GoDataDriven B.V.
 *
 * 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.
 */

package io.divolte.server;

import static org.junit.Assert.*;

import java.util.HashSet;
import java.util.Set;

import org.junit.Test;

public class DivolteIdentifierTest {
    @Test
    public void divolteIdentifiersShouldBeUnique() {
        final int num = 100000;
        final Set<String> values = new HashSet<>(num + num / 2);
        for (int c = 0; c < num; c++) {
            values.add(DivolteIdentifier.generate().value);
        }

        assertEquals(num, values.size());
    }

    @Test
    public void divolteIdentifiersShouldEncodeTimestamp() {
        DivolteIdentifier cv = DivolteIdentifier.generate(42);
        assertEquals(42, DivolteIdentifier.tryParse(cv.value).get().timestamp);
    }

    @Test
    public void equalCookieValuesShouldBeConsistentWithHashcodeAndEquals() {
        DivolteIdentifier left = DivolteIdentifier.generate();
        DivolteIdentifier right = DivolteIdentifier.tryParse(left.value).get();

        assertTrue(left.equals(right));
        assertEquals(left.hashCode(), right.hashCode());

        assertNotEquals(DivolteIdentifier.generate(42), DivolteIdentifier.generate(42));
    }

    @Test
    public void divolteIdentifiersShouldParseVersionAndTimestamp() {
        String stringValue = "0:16:5mRCeUO4p2_6R7u1m9ZoxXG2AfBeJeHD";
        DivolteIdentifier value = DivolteIdentifier.tryParse(stringValue).get();
        assertEquals(42, value.timestamp);
        assertEquals('0', value.version);
        assertEquals(stringValue, value.value);
    }
}