/*
* 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.analyze;
import io.crate.planner.symbol.Parameter;
import io.crate.sql.parser.SqlParser;
import io.crate.sql.tree.ArrayLiteral;
import io.crate.sql.tree.Expression;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.assertEquals;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class SubscriptVisitorTest {
public SubscriptVisitor visitor = new SubscriptVisitor();
@Rule
public ExpectedException expectedException = ExpectedException.none();
private Object currentParameter;
private SubscriptContext analyzeSubscript(String expressionString) {
Analyzer.ParameterContext parameterContext = mock(Analyzer.ParameterContext.class);
when(parameterContext.getAsSymbol(anyInt())).thenReturn(new Parameter(currentParameter));
SubscriptContext context = new SubscriptContext(parameterContext);
Expression expression = SqlParser.createExpression(expressionString);
expression.accept(visitor, context);
return context;
}
@Test
public void testVisitSubscriptExpression() throws Exception {
SubscriptContext context = analyzeSubscript("a['x']['y']");
assertEquals("a", context.qName().getSuffix());
assertEquals("x", context.parts().get(0));
assertEquals("y", context.parts().get(1));
}
@Test
public void testInvalidSubscriptExpressionName() throws Exception {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("An expression of type StringLiteral cannot have an index accessor ([])");
analyzeSubscript("'a'['x']['y']");
}
@Test
public void testInvalidSubscriptExpressionIndex() throws Exception {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("index of subscript has to be a string or long literal or parameter. Any other index expression is not supported");
analyzeSubscript("a[x]['y']");
}
@Test
public void testSubscriptParameter() throws Exception {
currentParameter = "y";
SubscriptContext ctx = analyzeSubscript("a['x'][?]");
assertThat(ctx.parts(), hasItems("x", "y"));
}
@Test
public void testArraySubscriptParameter() throws Exception {
currentParameter = 1;
SubscriptContext ctx = analyzeSubscript("a[?]");
assertThat(ctx.index(), is(1));
expectedException.expect(UnsupportedOperationException.class);
expectedException.expectMessage("Nested array access is not supported");
currentParameter = 2;
analyzeSubscript("a[1][?]");
}
@Test
public void testSubscriptOnArrayLiteral() throws Exception {
SubscriptContext context = analyzeSubscript("[1,2,3][1]");
assertThat(context.expression(), is(notNullValue()));
assertThat(context.expression(), instanceOf(ArrayLiteral.class));
assertThat(context.index(), is(1));
}
@Test
public void testStringSubscriptOnArrayLiteral() throws Exception {
expectedException.expect(IllegalArgumentException.class);
expectedException.expectMessage("Array literals can only be accessed via numeric index.");
analyzeSubscript("[1,2,3]['abc']");
}
@Test
public void testNestedArrayAccess() throws Exception {
expectedException.expect(UnsupportedOperationException.class);
expectedException.expectMessage("Nested array access is not supported");
analyzeSubscript("a[1][2]");
}
@Test
public void testNegativeArrayAccess() throws Exception {
expectedException.expect(UnsupportedOperationException.class);
expectedException.expectMessage("Array index must be in range 1 to 2147483648");
analyzeSubscript("ref[-1]");
}
}