SimpleDBLimitationsTest.java

package org.springframework.data.simpledb.repository;

import static org.junit.Assert.*;

import java.util.*;

import org.junit.After;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.simpledb.domain.SimpleDbUser;
import org.springframework.data.simpledb.repository.BasicSimpleDbUserRepository;
import org.springframework.data.simpledb.repository.util.SimpleDbUserBuilder;
import org.springframework.data.simpledb.util.RandomValueGenerator;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "classpath:simpledb-consistent-repository-context.xml")
public class SimpleDBLimitationsTest {

	public static final int MAX_SIMPLE_DB_ATTRIBUTE_LENGTH = 1024;
	@Autowired
	BasicSimpleDbUserRepository repository;

	@After
	public void tearDown() {
		repository.deleteAll();
	}

	@Test
	public void should_persist_max_simple_db_length_characters_long_string() {
		String itemName = "FirstItem";

		SimpleDbUser user = SimpleDbUserBuilder.createUserWithSampleAttributes(itemName);

		user.setCoreField(RandomValueGenerator.generateStringOfLength(MAX_SIMPLE_DB_ATTRIBUTE_LENGTH));

		repository.save(user);

		SimpleDbUser foundUser = repository.findOne(user.getItemName());

		assertNotNull(foundUser);
		assertEquals(MAX_SIMPLE_DB_ATTRIBUTE_LENGTH, foundUser.getCoreField().length());
		assertEquals(user.getCoreField(), foundUser.getCoreField());
	}

	@Test
	public void should_persist_strings_longer_than_max_simple_db_length_chars() {
		String itemName = "FirstItem";

		SimpleDbUser user = SimpleDbUserBuilder.createUserWithSampleAttributes(itemName);

		user.setCoreField(RandomValueGenerator.generateStringOfLength(MAX_SIMPLE_DB_ATTRIBUTE_LENGTH + 1));

		repository.save(user);

		SimpleDbUser foundUser = repository.findOne(user.getItemName());

		assertNotNull(foundUser);
		assertEquals(MAX_SIMPLE_DB_ATTRIBUTE_LENGTH + 1, foundUser.getCoreField().length());
		assertEquals(user.getCoreField(), foundUser.getCoreField());
	}

	/* max 256 attributes in a amazon simpleDB request */
	@Test
	public void should_persist_array_serialized_into_string_longer_than_max_simple_db_length_chars() {
		String itemName = "FirstItem";
		int longArraySize = 512;

		SimpleDbUser user = SimpleDbUserBuilder.createUserWithSampleAttributes(itemName);

		final long[] longPrimitiveArray = RandomValueGenerator.generateArrayOfSize(longArraySize);
		user.setPrimitiveArrayField(longPrimitiveArray);

		repository.save(user);

		final SimpleDbUser foundUser = repository.findOne(user.getItemName());
		assertNotNull(foundUser);
		assertEquals(longArraySize, foundUser.getPrimitiveArrayField().length);
		assertTrue(Arrays.equals(user.getPrimitiveArrayField(), foundUser.getPrimitiveArrayField()));
	}

}