@Test
public void mustAllowDoubleCommitAndRollback() {
SharedGroup db = new SharedGroup(testFile, SharedGroup.Durability.FULL, null);
{
WriteTransaction trans = db.beginWrite();
Table tbl = trans.getTable("EmployeeTable");
tbl.addColumn(RealmFieldType.STRING, "name");
tbl.addColumn(RealmFieldType.INTEGER, "number");
// allow commit before any changes
assertEquals(0, tbl.size());
tbl.add("Hello", 1);
trans.commit();
}
{
WriteTransaction trans = db.beginWrite();
Table tbl = trans.getTable("EmployeeTable");
// allow double rollback
tbl.add("Hello", 2);
assertEquals(2, tbl.size());
trans.rollback();
trans.rollback();
trans.rollback();
trans.rollback();
}
{
ReadTransaction trans = db.beginRead();
Table tbl = trans.getTable("EmployeeTable");
assertEquals(1, tbl.size());
trans.endRead();
}
}
protected void checkRead(SharedGroup db, int rows) {
// Read transaction
ReadTransaction trans = db.beginRead();
Table tbl = trans.getTable("EmployeeTable");
assertEquals(true, tbl.isValid());
assertEquals(rows, tbl.size());
trans.endRead();
}
@Test
public void shouldThrowExceptionWhenWritingInReadTrans() {
SharedGroup db = new SharedGroup(testFile, SharedGroup.Durability.FULL, null);
ReadTransaction rt = db.beginRead();
try {
try {
rt.getTable(
"newTable"); // Should throw exception, as this method creates a new table, if the table
// does not exists, thereby making it a mutable operation
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
} finally {
rt.endRead();
}
}
@Test
public void shouldThrowExceptionAfterClosedReadTransaction() {
SharedGroup db = new SharedGroup(testFile, SharedGroup.Durability.FULL, null);
writeOneTransaction(db, 10);
ReadTransaction rt = db.beginRead();
try {
Table tbl = rt.getTable("EmployeeTable");
rt.endRead();
try {
tbl
.getColumnCount(); // Should throw exception, the table is invalid when transaction has
// been closed
fail();
} catch (IllegalStateException ignored) {
}
} finally {
rt.endRead();
}
}
@Test
public void shouldThrowExceptionAfterClosedReadTransactionWhenWriting() {
SharedGroup db = new SharedGroup(testFile, SharedGroup.Durability.FULL, null);
writeOneTransaction(db, 10);
ReadTransaction rt = db.beginRead();
try {
Table tbl = rt.getTable("EmployeeTable");
rt.endRead();
try {
tbl.addColumn(
RealmFieldType.STRING,
"newString"); // Should throw exception, as adding a column is not allowed in read
// transaction
fail();
} catch (IllegalStateException e) {
// assertNotNull(e);
}
} finally {
rt.endRead();
}
}
@Test
public void mustFailOnWriteInReadTransactions() {
SharedGroup db = new SharedGroup(testFile, SharedGroup.Durability.FULL, null);
writeOneTransaction(db, 1);
ReadTransaction t = db.beginRead();
Table table = t.getTable("EmployeeTable");
try {
table.addEmptyRow();
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.addEmptyRows(1);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.clear();
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.optimize();
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.remove(0);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.removeLast();
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.setBinaryByteArray(0, 0, null);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.setBoolean(0, 0, false);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.setDate(0, 0, new Date(0));
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.addSearchIndex(0);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.setLong(0, 0, 0);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.setMixed(0, 0, null);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
table.setString(0, 0, "");
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
TableQuery q = table.where();
try {
q.remove();
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
q.remove(0, 0);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
TableView v = q.findAll();
try {
v.clear();
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.remove(0);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.removeLast();
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.setBinaryByteArray(0, 0, null);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.setBoolean(0, 0, false);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.setDate(0, 0, new Date());
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.setLong(0, 0, 0);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.setString(0, 0, "");
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
try {
v.setMixed(0, 0, null);
fail();
} catch (IllegalStateException e) {
assertNotNull(e);
}
t.endRead();
}
