/** Unit test for TupleDesc.combine() */
@Test
public void combine() {
TupleDesc td1, td2, td3;
td1 = Utility.getTupleDesc(1, "td1");
td2 = Utility.getTupleDesc(2, "td2");
// test td1.combine(td2)
td3 = TupleDesc.merge(td1, td2);
assertEquals(3, td3.numFields());
assertEquals(3 * Type.INT_TYPE.getLen(), td3.getSize());
for (int i = 0; i < 3; ++i) assertEquals(Type.INT_TYPE, td3.getFieldType(i));
assertEquals(combinedStringArrays(td1, td2, td3), true);
// test td2.combine(td1)
td3 = TupleDesc.merge(td2, td1);
assertEquals(3, td3.numFields());
assertEquals(3 * Type.INT_TYPE.getLen(), td3.getSize());
for (int i = 0; i < 3; ++i) assertEquals(Type.INT_TYPE, td3.getFieldType(i));
assertEquals(combinedStringArrays(td2, td1, td3), true);
// test td2.combine(td2)
td3 = TupleDesc.merge(td2, td2);
assertEquals(4, td3.numFields());
assertEquals(4 * Type.INT_TYPE.getLen(), td3.getSize());
for (int i = 0; i < 4; ++i) assertEquals(Type.INT_TYPE, td3.getFieldType(i));
assertEquals(combinedStringArrays(td2, td2, td3), true);
}
@Test
public void new_getFieldTypeTest() {
int length = 100;
String name = "td";
TupleDesc td = Utility.getTupleDesc(length, name);
// Lower than index bound.
try {
td.getFieldType(length + 1);
fail("expected exception");
} catch (NoSuchElementException e) {
}
// Higher than index bound.
try {
td.getFieldType(-1);
fail("expected exception");
} catch (NoSuchElementException e) {
}
// Check each name.
for (int i = 0; i < length; i++) {
assertEquals(Type.INT_TYPE, td.getFieldType(i));
}
}
/** Unit test for TupleDesc.getType() */
@Test
public void getType() {
int[] lengths = new int[] {1, 2, 1000};
for (int len : lengths) {
TupleDesc td = Utility.getTupleDesc(len);
for (int i = 0; i < len; ++i) assertEquals(Type.INT_TYPE, td.getFieldType(i));
}
}
/** Unit test for TupleDesc.numFields() */
@Test
public void numFields() {
int[] lengths = new int[] {1, 2, 1000};
for (int len : lengths) {
TupleDesc td = Utility.getTupleDesc(len);
assertEquals(len, td.numFields());
}
}
/** Unit test for TupleDesc.getSize() */
@Test
public void getSize() {
int[] lengths = new int[] {1, 2, 1000};
for (int len : lengths) {
TupleDesc td = Utility.getTupleDesc(len);
assertEquals(len * Type.INT_TYPE.getLen(), td.getSize());
}
}
/** Test one prarmeter constructor, it should set the filed name to null. */
@Test
public void new_oneParamsConTest() {
int[] lengths = new int[] {1, 2, 1000};
for (int len : lengths) {
TupleDesc td = Utility.getTupleDesc(len);
for (int i = 0; i < len; i++) {
assertEquals("", td.getFieldName(i));
}
}
}
/** Unit test for TupleDesc.nameToId() */
@Test
public void nameToId() {
int[] lengths = new int[] {1, 2, 1000};
String prefix = "test";
for (int len : lengths) {
// Make sure you retrieve well-named fields
TupleDesc td = Utility.getTupleDesc(len, prefix);
for (int i = 0; i < len; ++i) {
assertEquals(i, td.fieldNameToIndex(prefix + i));
}
// Make sure you throw exception for non-existent fields
try {
td.fieldNameToIndex("foo");
Assert.fail("foo is not a valid field name");
} catch (NoSuchElementException e) {
// expected to get here
}
// Make sure you throw exception for null searches
try {
td.fieldNameToIndex(null);
Assert.fail("null is not a valid field name");
} catch (NoSuchElementException e) {
// expected to get here
}
// Make sure you throw exception when all field names are null
td = Utility.getTupleDesc(len);
try {
td.fieldNameToIndex(prefix);
Assert.fail("no fields are named, so you can't find it");
} catch (NoSuchElementException e) {
// expected to get here
}
}
}
@Test
public void new_iteratorTest() {
int[] lengths = new int[] {1, 2, 1000};
for (int len : lengths) {
TupleDesc td = Utility.getTupleDesc(len);
Iterator<TupleDesc.TDItem> i = td.iterator();
while (i.hasNext()) {
TupleDesc.TDItem item = i.next();
assertEquals(Type.INT_TYPE, item.fieldType);
assertEquals("", item.fieldName);
}
}
}
@Test
public void new_fieldsTest() {
int length = 10;
String name = "td";
Tuple t = new Tuple(Utility.getTupleDesc(length, name));
Iterator<Field> fs = t.fields();
int i = 0;
while (fs.hasNext()) {
i++;
fs.next();
}
assertEquals(length, i);
}
/** Unit test for Tuple.getRecordId() and Tuple.setRecordId() */
@Test
public void modifyRecordId() {
Tuple tup1 = new Tuple(Utility.getTupleDesc(1));
HeapPageId pid1 = new HeapPageId(0, 0);
RecordId rid1 = new RecordId(pid1, 0);
tup1.setRecordId(rid1);
try {
assertEquals(rid1, tup1.getRecordId());
} catch (java.lang.UnsupportedOperationException e) {
// rethrow the exception with an explanation
throw new UnsupportedOperationException(
"modifyRecordId() test failed due to "
+ "RecordId.equals() not being implemented. This is not required for Lab 1, "
+ "but should pass when you do implement the RecordId class.");
}
}
/** Unit test for Tuple.getField() and Tuple.setField() */
@Test
public void modifyFields() {
TupleDesc td = Utility.getTupleDesc(2);
Tuple tup = new Tuple(td);
tup.setField(0, new IntField(-1));
tup.setField(1, new IntField(0));
assertEquals(new IntField(-1), tup.getField(0));
assertEquals(new IntField(0), tup.getField(1));
tup.setField(0, new IntField(1));
tup.setField(1, new IntField(37));
assertEquals(new IntField(1), tup.getField(0));
assertEquals(new IntField(37), tup.getField(1));
}
@Test
public void new_toStringTest() {
int length = 10;
String name = "td";
Tuple t = new Tuple(Utility.getTupleDesc(length, name));
for (int i = 0; i < length; i++) {
t.setField(i, new TestField());
}
String tString = t.toString();
// Last character should be \n.
assertEquals("\n", tString.substring(tString.length() - 1));
// Only last character is \n.
assertFalse(tString.substring(0, tString.length() - 1).contains("\n"));
// Split string on any white character.
String[] tStringAr = tString.substring(0, tString.length() - 1).split("\\s+");
assertEquals(length, tStringAr.length);
}
/** Set up initial resources for each unit test. */
@Before
public void setUp() throws Exception {
hf = SystemTestUtil.createRandomHeapFile(2, 20, null, null);
td = Utility.getTupleDesc(2);
tid = new TransactionId();
}
/** Unit test for Tuple.getTupleDesc() */
@Test
public void getTupleDesc() {
TupleDesc td = Utility.getTupleDesc(5);
Tuple tup = new Tuple(td);
assertEquals(td, tup.getTupleDesc());
}