/*
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* and other copyright owners as documented in the project's IP log.
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* This program and the accompanying materials are made available
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* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
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* - Redistributions of source code must retain the above copyright
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package org.eclipse.jgit.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectIdRef;
import org.eclipse.jgit.lib.Ref;
import org.junit.Test;
public class RefListTest {
private static final ObjectId ID = ObjectId
.fromString("41eb0d88f833b558bddeb269b7ab77399cdf98ed");
private static final Ref REF_A = newRef("A");
private static final Ref REF_B = newRef("B");
private static final Ref REF_c = newRef("c");
@Test
public void testEmpty() {
RefList<Ref> list = RefList.emptyList();
assertEquals(0, list.size());
assertTrue(list.isEmpty());
assertFalse(list.iterator().hasNext());
assertEquals(-1, list.find("a"));
assertEquals(-1, list.find("z"));
assertFalse(list.contains("a"));
assertNull(list.get("a"));
try {
list.get(0);
fail("RefList.emptyList should have 0 element array");
} catch (ArrayIndexOutOfBoundsException err) {
// expected
}
}
@Test
public void testEmptyBuilder() {
RefList<Ref> list = new RefList.Builder<Ref>().toRefList();
assertEquals(0, list.size());
assertFalse(list.iterator().hasNext());
assertEquals(-1, list.find("a"));
assertEquals(-1, list.find("z"));
assertFalse(list.contains("a"));
assertNull(list.get("a"));
assertTrue(list.asList().isEmpty());
assertEquals("[]", list.toString());
// default array capacity should be 16, with no bounds checking.
assertNull(list.get(16 - 1));
try {
list.get(16);
fail("default RefList should have 16 element array");
} catch (ArrayIndexOutOfBoundsException err) {
// expected
}
}
@Test
public void testBuilder_AddThenSort() {
RefList.Builder<Ref> builder = new RefList.Builder<Ref>(1);
builder.add(REF_B);
builder.add(REF_A);
RefList<Ref> list = builder.toRefList();
assertEquals(2, list.size());
assertSame(REF_B, list.get(0));
assertSame(REF_A, list.get(1));
builder.sort();
list = builder.toRefList();
assertEquals(2, list.size());
assertSame(REF_A, list.get(0));
assertSame(REF_B, list.get(1));
}
@Test
public void testBuilder_AddAll() {
RefList.Builder<Ref> builder = new RefList.Builder<Ref>(1);
Ref[] src = { REF_A, REF_B, REF_c, REF_A };
builder.addAll(src, 1, 2);
RefList<Ref> list = builder.toRefList();
assertEquals(2, list.size());
assertSame(REF_B, list.get(0));
assertSame(REF_c, list.get(1));
}
@Test
public void testBuilder_Set() {
RefList.Builder<Ref> builder = new RefList.Builder<Ref>();
builder.add(REF_A);
builder.add(REF_A);
assertEquals(2, builder.size());
assertSame(REF_A, builder.get(0));
assertSame(REF_A, builder.get(1));
RefList<Ref> list = builder.toRefList();
assertEquals(2, list.size());
assertSame(REF_A, list.get(0));
assertSame(REF_A, list.get(1));
builder.set(1, REF_B);
list = builder.toRefList();
assertEquals(2, list.size());
assertSame(REF_A, list.get(0));
assertSame(REF_B, list.get(1));
}
@Test
public void testBuilder_Remove() {
RefList.Builder<Ref> builder = new RefList.Builder<Ref>();
builder.add(REF_A);
builder.add(REF_B);
builder.remove(0);
assertEquals(1, builder.size());
assertSame(REF_B, builder.get(0));
}
@Test
public void testSet() {
RefList<Ref> one = toList(REF_A, REF_A);
RefList<Ref> two = one.set(1, REF_B);
assertNotSame(one, two);
// one is not modified
assertEquals(2, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_A, one.get(1));
// but two is
assertEquals(2, two.size());
assertSame(REF_A, one.get(0));
assertSame(REF_B, two.get(1));
}
@Test
public void testAddToEmptyList() {
RefList<Ref> one = toList();
RefList<Ref> two = one.add(0, REF_B);
assertNotSame(one, two);
// one is not modified, but two is
assertEquals(0, one.size());
assertEquals(1, two.size());
assertFalse(two.isEmpty());
assertSame(REF_B, two.get(0));
}
@Test
public void testAddToFrontOfList() {
RefList<Ref> one = toList(REF_A);
RefList<Ref> two = one.add(0, REF_B);
assertNotSame(one, two);
// one is not modified, but two is
assertEquals(1, one.size());
assertSame(REF_A, one.get(0));
assertEquals(2, two.size());
assertSame(REF_B, two.get(0));
assertSame(REF_A, two.get(1));
}
@Test
public void testAddToEndOfList() {
RefList<Ref> one = toList(REF_A);
RefList<Ref> two = one.add(1, REF_B);
assertNotSame(one, two);
// one is not modified, but two is
assertEquals(1, one.size());
assertSame(REF_A, one.get(0));
assertEquals(2, two.size());
assertSame(REF_A, two.get(0));
assertSame(REF_B, two.get(1));
}
@Test
public void testAddToMiddleOfListByInsertionPosition() {
RefList<Ref> one = toList(REF_A, REF_c);
assertEquals(-2, one.find(REF_B.getName()));
RefList<Ref> two = one.add(one.find(REF_B.getName()), REF_B);
assertNotSame(one, two);
// one is not modified, but two is
assertEquals(2, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_c, one.get(1));
assertEquals(3, two.size());
assertSame(REF_A, two.get(0));
assertSame(REF_B, two.get(1));
assertSame(REF_c, two.get(2));
}
@Test
public void testPutNewEntry() {
RefList<Ref> one = toList(REF_A, REF_c);
RefList<Ref> two = one.put(REF_B);
assertNotSame(one, two);
// one is not modified, but two is
assertEquals(2, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_c, one.get(1));
assertEquals(3, two.size());
assertSame(REF_A, two.get(0));
assertSame(REF_B, two.get(1));
assertSame(REF_c, two.get(2));
}
@Test
public void testPutReplaceEntry() {
Ref otherc = newRef(REF_c.getName());
assertNotSame(REF_c, otherc);
RefList<Ref> one = toList(REF_A, REF_c);
RefList<Ref> two = one.put(otherc);
assertNotSame(one, two);
// one is not modified, but two is
assertEquals(2, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_c, one.get(1));
assertEquals(2, two.size());
assertSame(REF_A, two.get(0));
assertSame(otherc, two.get(1));
}
@Test
public void testRemoveFrontOfList() {
RefList<Ref> one = toList(REF_A, REF_B, REF_c);
RefList<Ref> two = one.remove(0);
assertNotSame(one, two);
assertEquals(3, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_B, one.get(1));
assertSame(REF_c, one.get(2));
assertEquals(2, two.size());
assertSame(REF_B, two.get(0));
assertSame(REF_c, two.get(1));
}
@Test
public void testRemoveMiddleOfList() {
RefList<Ref> one = toList(REF_A, REF_B, REF_c);
RefList<Ref> two = one.remove(1);
assertNotSame(one, two);
assertEquals(3, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_B, one.get(1));
assertSame(REF_c, one.get(2));
assertEquals(2, two.size());
assertSame(REF_A, two.get(0));
assertSame(REF_c, two.get(1));
}
@Test
public void testRemoveEndOfList() {
RefList<Ref> one = toList(REF_A, REF_B, REF_c);
RefList<Ref> two = one.remove(2);
assertNotSame(one, two);
assertEquals(3, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_B, one.get(1));
assertSame(REF_c, one.get(2));
assertEquals(2, two.size());
assertSame(REF_A, two.get(0));
assertSame(REF_B, two.get(1));
}
@Test
public void testRemoveMakesEmpty() {
RefList<Ref> one = toList(REF_A);
RefList<Ref> two = one.remove(1);
assertNotSame(one, two);
assertSame(two, RefList.emptyList());
}
@Test
public void testToString() {
StringBuilder exp = new StringBuilder();
exp.append("[");
exp.append(REF_A);
exp.append(", ");
exp.append(REF_B);
exp.append("]");
RefList<Ref> list = toList(REF_A, REF_B);
assertEquals(exp.toString(), list.toString());
}
@Test
public void testBuilder_ToString() {
StringBuilder exp = new StringBuilder();
exp.append("[");
exp.append(REF_A);
exp.append(", ");
exp.append(REF_B);
exp.append("]");
RefList.Builder<Ref> list = new RefList.Builder<Ref>();
list.add(REF_A);
list.add(REF_B);
assertEquals(exp.toString(), list.toString());
}
@Test
public void testFindContainsGet() {
RefList<Ref> list = toList(REF_A, REF_B, REF_c);
assertEquals(0, list.find("A"));
assertEquals(1, list.find("B"));
assertEquals(2, list.find("c"));
assertEquals(-1, list.find("0"));
assertEquals(-2, list.find("AB"));
assertEquals(-3, list.find("a"));
assertEquals(-4, list.find("z"));
assertSame(REF_A, list.get("A"));
assertSame(REF_B, list.get("B"));
assertSame(REF_c, list.get("c"));
assertNull(list.get("AB"));
assertNull(list.get("z"));
assertTrue(list.contains("A"));
assertTrue(list.contains("B"));
assertTrue(list.contains("c"));
assertFalse(list.contains("AB"));
assertFalse(list.contains("z"));
}
@Test
public void testIterable() {
RefList<Ref> list = toList(REF_A, REF_B, REF_c);
int idx = 0;
for (Ref ref : list)
assertSame(list.get(idx++), ref);
assertEquals(3, idx);
Iterator<Ref> i = RefList.emptyList().iterator();
try {
i.next();
fail("did not throw NoSuchElementException");
} catch (NoSuchElementException err) {
// expected
}
i = list.iterator();
assertTrue(i.hasNext());
assertSame(REF_A, i.next());
try {
i.remove();
fail("did not throw UnsupportedOperationException");
} catch (UnsupportedOperationException err) {
// expected
}
}
@Test
public void testCopyLeadingPrefix() {
RefList<Ref> one = toList(REF_A, REF_B, REF_c);
RefList<Ref> two = one.copy(2).toRefList();
assertNotSame(one, two);
assertEquals(3, one.size());
assertSame(REF_A, one.get(0));
assertSame(REF_B, one.get(1));
assertSame(REF_c, one.get(2));
assertEquals(2, two.size());
assertSame(REF_A, two.get(0));
assertSame(REF_B, two.get(1));
}
@Test
public void testCopyConstructorReusesArray() {
RefList.Builder<Ref> one = new RefList.Builder<Ref>();
one.add(REF_A);
RefList<Ref> two = new RefList<Ref>(one.toRefList());
one.set(0, REF_B);
assertSame(REF_B, two.get(0));
}
private static RefList<Ref> toList(Ref... refs) {
RefList.Builder<Ref> b = new RefList.Builder<Ref>(refs.length);
b.addAll(refs, 0, refs.length);
return b.toRefList();
}
private static Ref newRef(final String name) {
return new ObjectIdRef.Unpeeled(Ref.Storage.LOOSE, name, ID);
}
}