@Test
public void nextOnNonEmptyCursor_shouldReturnTrue() throws IOException, SQLException {
File file = new File("whatever");
try {
writeObjectsToFile(file);
Cursor cursor = new FileCursor(file);
try {
assertTrue(cursor.next());
} finally {
cursor.close();
}
} finally {
assertTrue(file.delete());
}
}
@Test
public void afterReseting_nextReturnsTrue() throws IOException, SQLException {
File file = new File("whatever");
try {
writeObjectsToFile(file);
Cursor cursor = new FileCursor(file);
try {
iterateThrough(cursor);
cursor.reset();
assertTrue(cursor.next());
} finally {
cursor.close();
}
} finally {
assertTrue(file.delete());
}
}
@Test
public void testGetObject() throws IOException, SQLException {
File file = new File("whatever");
try {
writeObjectsToFile(file);
Cursor cursor = new FileCursor(file);
try {
cursor.next();
assertEquals("1", cursor.getObject(1));
assertEquals("2", cursor.getObject(2));
} finally {
cursor.close();
}
} finally {
assertTrue(file.delete());
}
}
@Test
public void canRetrieveMetadata() throws IOException, SQLException {
File file = new File("whatever");
try {
writeObjectsToFile(file);
Cursor cursor = new FileCursor(file);
try {
CursorMetadata actual = cursor.getMetadata();
assertThat(actual.getColumnCount(), equalTo(2));
assertThat(actual.getColumnName(1), equalTo("A"));
assertThat(actual.getColumnName(2), equalTo("B"));
} finally {
cursor.close();
}
} finally {
assertTrue(file.delete());
}
}
private void iterateThrough(Cursor cursor) {
while (cursor.next()) {}
}