CyclicCharacterBufferTest.java

package com.github.ruediste1.btrbck;

import static org.junit.Assert.assertEquals;

import org.junit.Before;
import org.junit.Test;

public class CyclicCharacterBufferTest {

    CyclicCharacterBuffer buf;

    @Before
    public void stup() {
        buf = new CyclicCharacterBuffer(5);
    }

    @Test
    public void testSimple() {
        buf.append("abc");
        assertEquals("abc", buf.getTail());
    }

    @Test
    public void testSimpleWithCharsLength() {
        buf.append("abcdef".toCharArray(), 3);
        assertEquals("abc", buf.getTail());
    }

    @Test
    public void testAddEmpty() {
        buf.append("");
        assertEquals("", buf.getTail());
    }

    @Test
    public void testFillBuffer() {
        buf.append("abcde");
        assertEquals("abcde", buf.getTail());
    }

    @Test
    public void testOverflow() {
        buf.append("abcdef");
        assertEquals("bcdef", buf.getTail());
    }

    @Test
    public void testAddThenOverflow() {
        buf.append("abc");
        buf.append("def");
        assertEquals("bcdef", buf.getTail());
    }

    public void testAddThenOverflowJustFill() {
        buf.append("abc");
        buf.append("defghij");
        assertEquals("fghij", buf.getTail());
    }
}