/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate licenses
* this file to you 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.operation.scalar.cast;
import com.google.common.collect.ImmutableList;
import io.crate.metadata.FunctionIdent;
import io.crate.metadata.Functions;
import io.crate.operation.Input;
import io.crate.operation.scalar.ScalarFunctionModule;
import io.crate.planner.symbol.Function;
import io.crate.planner.symbol.Literal;
import io.crate.planner.symbol.Reference;
import io.crate.planner.symbol.Symbol;
import io.crate.testing.TestingHelpers;
import io.crate.types.ArrayType;
import io.crate.types.DataType;
import io.crate.types.DataTypes;
import org.apache.lucene.util.BytesRef;
import org.elasticsearch.common.inject.ModulesBuilder;
import org.hamcrest.Matchers;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import java.util.Arrays;
import static org.hamcrest.core.Is.is;
import static org.hamcrest.core.IsInstanceOf.instanceOf;
import static org.junit.Assert.assertThat;
public class ToIntArrayFunctionTest {
private Functions functions;
@Rule
public ExpectedException expectedException = ExpectedException.none();
@Before
public void setUp() throws Exception {
functions = new ModulesBuilder()
.add(new ScalarFunctionModule()).createInjector().getInstance(Functions.class);
}
@Test
public void testArrayDifferentTypesToInt() throws Exception {
Object[] expected = new Integer[] { 10, 20, 30 };
Object[] actual;
actual = eval(new String[]{"10", "20", "30"}, DataTypes.STRING);
assertThat(actual, is(expected));
actual = eval(new BytesRef[]{new BytesRef("10"), new BytesRef("20"), new BytesRef("30")}, DataTypes.STRING);
assertThat(actual, is(expected));
actual = eval(new Long[] { 10L, 20L, 30L }, DataTypes.LONG);
assertThat(actual, is(expected));
}
@Test
public void testListDifferentTypesToInt() throws Exception {
Object[] expected = new Integer[] { 10, 20, 30 };
Object[] actual;
actual = eval(Arrays.asList("10", "20", "30"), DataTypes.STRING);
assertThat(actual, is(expected));
actual = eval(Arrays.asList(new BytesRef("10"), new BytesRef("20"), new BytesRef("30")), DataTypes.STRING);
assertThat(actual, is(expected));
actual = eval(Arrays.asList( 10L, 20L, 30L ), DataTypes.LONG);
assertThat(actual, is(expected));
}
@Test
public void testInvalidValueToInt() throws Exception {
expectedException.expect(NumberFormatException.class);
expectedException.expectMessage("For input string: \"foobar\"");
eval(Arrays.asList("foobar", "20", "30"), DataTypes.STRING);
}
@Test
public void testWithNullValueToInt() throws Exception {
Object[] expected = new Integer[] { 10, null, 30 };
Object[] actual;
actual = eval(Arrays.asList("10", null, "30"), DataTypes.STRING);
assertThat(actual, is(expected));
}
@Test
public void testNormalizeWithReference() throws Exception {
final DataType arrayType = new ArrayType(DataTypes.STRING);
ToIntArrayFunction impl = (ToIntArrayFunction)functions.get(
new FunctionIdent(ToIntArrayFunction.NAME, ImmutableList.of(arrayType)));
Reference foo = TestingHelpers.createReference("foo", arrayType);
Symbol symbol = impl.normalizeSymbol(new Function(impl.info(), Arrays.<Symbol>asList(foo)));
assertThat(symbol, instanceOf(Function.class));
}
@Test
public void testNullToInt() throws Exception {
assertThat(eval(null, DataTypes.LONG), Matchers.nullValue());
assertThat(eval(null, DataTypes.STRING), Matchers.nullValue());
}
private Object[] eval(final Object objects, DataType innerType) {
final DataType arrayType = new ArrayType(innerType);
ToIntArrayFunction impl = (ToIntArrayFunction)functions.get(
new FunctionIdent(ToIntArrayFunction.NAME, ImmutableList.of(arrayType)));
Literal input = new Literal() {
@Override
public Object value() {
return objects;
}
@Override
public DataType valueType() {
return arrayType;
}
};
Symbol normalized = impl.normalizeSymbol(new Function(impl.info(), Arrays.<Symbol>asList(input)));
Object[] integers = impl.evaluate(new Input[]{input});
assertThat(integers, is(((Input) normalized).value()));
return integers;
}
}