/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.presto.metadata;
import com.facebook.presto.spi.type.StandardTypes;
import com.facebook.presto.spi.type.Type;
import com.facebook.presto.spi.type.TypeManager;
import com.facebook.presto.type.TypeDeserializer;
import com.facebook.presto.type.TypeRegistry;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import io.airlift.json.JsonCodec;
import io.airlift.json.JsonCodecFactory;
import io.airlift.json.ObjectMapperProvider;
import org.testng.annotations.Test;
import static com.facebook.presto.metadata.Signature.comparableTypeParameter;
import static com.facebook.presto.metadata.Signature.typeParameter;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
import static com.facebook.presto.spi.type.HyperLogLogType.HYPER_LOG_LOG;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertNull;
public class TestSignature
{
@Test
public void testRoundTrip()
{
ObjectMapperProvider objectMapperProvider = new ObjectMapperProvider();
objectMapperProvider.setJsonDeserializers(ImmutableMap.<Class<?>, JsonDeserializer<?>>of(Type.class, new TypeDeserializer(new TypeRegistry())));
JsonCodec<Signature> codec = new JsonCodecFactory(objectMapperProvider, true).jsonCodec(Signature.class);
Signature expected = new Signature("function", StandardTypes.BIGINT, ImmutableList.of(StandardTypes.BOOLEAN, StandardTypes.DOUBLE, StandardTypes.VARCHAR));
String json = codec.toJson(expected);
Signature actual = codec.fromJson(json);
assertEquals(actual.getName(), expected.getName());
assertEquals(actual.getReturnType(), expected.getReturnType());
assertEquals(actual.getArgumentTypes(), expected.getArgumentTypes());
}
@Test
public void testBasic()
throws Exception
{
TypeManager typeManager = new TypeRegistry();
Signature signature = new Signature("foo", ImmutableList.of(typeParameter("T")), "T", ImmutableList.of("T"), false, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.<Type>of(BIGINT), true, typeManager));
assertNotNull(signature.bindTypeParameters(ImmutableList.of(VARCHAR), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(VARCHAR, BIGINT), true, typeManager));
assertNotNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<bigint>")), true, typeManager));
}
@Test
public void testNonParametric()
throws Exception
{
TypeManager typeManager = new TypeRegistry();
Signature signature = new Signature("foo", ImmutableList.<TypeParameter>of(), "boolean", ImmutableList.of("bigint"), false, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.of(BIGINT), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(VARCHAR), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(VARCHAR, BIGINT), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<bigint>")), true, typeManager));
}
@Test
public void testArray()
throws Exception
{
TypeManager typeManager = new TypeRegistry();
Signature signature = new Signature("get", ImmutableList.of(typeParameter("T")), "T", ImmutableList.of("array<T>"), false, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<bigint>")), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(BIGINT), true, typeManager));
signature = new Signature("contains", ImmutableList.of(comparableTypeParameter("T")), "T", ImmutableList.of("array<T>", "T"), false, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<bigint>"), BIGINT), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<bigint>"), VARCHAR), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<HyperLogLog>"), HYPER_LOG_LOG), true, typeManager));
signature = new Signature("foo", ImmutableList.of(typeParameter("T")), "T", ImmutableList.of("array<T>", "array<T>"), false, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<bigint>"), typeManager.getType("array<bigint>")), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("array<bigint>"), typeManager.getType("array<varchar>")), true, typeManager));
}
@Test
public void testMap()
throws Exception
{
TypeManager typeManager = new TypeRegistry();
Signature signature = new Signature("get", ImmutableList.of(typeParameter("K"), typeParameter("V")), "V", ImmutableList.of("map<K,V>", "K"), false, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("map<bigint,varchar>"), BIGINT), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(typeManager.getType("map<bigint,varchar>"), VARCHAR), true, typeManager));
}
@Test
public void testVarArgs()
throws Exception
{
TypeManager typeManager = new TypeRegistry();
Signature signature = new Signature("foo", ImmutableList.of(typeParameter("T")), "boolean", ImmutableList.of("T"), true, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.of(BIGINT), true, typeManager));
assertNotNull(signature.bindTypeParameters(ImmutableList.of(VARCHAR), true, typeManager));
assertNotNull(signature.bindTypeParameters(ImmutableList.of(BIGINT, BIGINT), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(VARCHAR, BIGINT), true, typeManager));
}
@Test
public void testCoercion()
throws Exception
{
TypeManager typeManager = new TypeRegistry();
Signature signature = new Signature("foo", ImmutableList.of(typeParameter("T")), "boolean", ImmutableList.of("T", "double"), true, true);
assertNotNull(signature.bindTypeParameters(ImmutableList.of(DOUBLE, DOUBLE), true, typeManager));
assertNotNull(signature.bindTypeParameters(ImmutableList.of(BIGINT, BIGINT), true, typeManager));
assertNotNull(signature.bindTypeParameters(ImmutableList.of(VARCHAR, BIGINT), true, typeManager));
assertNull(signature.bindTypeParameters(ImmutableList.of(BIGINT, VARCHAR), true, typeManager));
}
}