PrefixedIncrementingIdTest.java

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package org.apache.hc.client5.http.impl;

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

class PrefixedIncrementingIdTest {

    @Test
    void testGetNextId() {
        final PrefixedIncrementingId testId = new PrefixedIncrementingId("test-");
        Assertions.assertEquals(String.format("test-%010d", 1), testId.getNextId());
        Assertions.assertEquals(String.format("test-%010d", 2), testId.getNextId());
    }

    @Test
    void testCreateId() {
        final PrefixedIncrementingId exchangeId = new PrefixedIncrementingId("ex-");
        Assertions.assertEquals(String.format("ex-%010d", 0), exchangeId.createId(0));
        for (long i = 1; i <= 100_000_000L; i *= 10) {
            Assertions.assertEquals(String.format("ex-%010d", i - 1), exchangeId.createId(i - 1));
            Assertions.assertEquals(String.format("ex-%010d", i), exchangeId.createId(i));
            Assertions.assertEquals(String.format("ex-%010d", i + 1), exchangeId.createId(i + 1));
        }
    }

}