| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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. |
| */ |
| |
| package org.apache.druid.query.lookup; |
| |
| import com.google.common.collect.ImmutableMap; |
| import org.apache.druid.common.config.NullHandling; |
| import org.apache.druid.query.extraction.MapLookupExtractor; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * This test suite clarifies some behavior around specific corner cases |
| */ |
| public class LookupExtractionFnExpectationsTest |
| { |
| @Test |
| public void testMissingKeyIsNull() |
| { |
| final LookupExtractionFn lookupExtractionFn = new LookupExtractionFn( |
| new MapLookupExtractor(ImmutableMap.of("foo", "bar"), false), |
| true, |
| null, |
| false, |
| false |
| ); |
| Assert.assertNull(lookupExtractionFn.apply(null)); |
| } |
| |
| @Test |
| public void testMissingKeyIsReplaced() |
| { |
| final LookupExtractionFn lookupExtractionFn = new LookupExtractionFn( |
| new MapLookupExtractor(ImmutableMap.of("foo", "bar"), false), |
| false, |
| "REPLACE", |
| false, |
| false |
| ); |
| Assert.assertEquals("REPLACE", lookupExtractionFn.apply(null)); |
| } |
| |
| @Test |
| public void testNullKeyIsMappable() |
| { |
| final LookupExtractionFn lookupExtractionFn = new LookupExtractionFn( |
| new MapLookupExtractor(ImmutableMap.of("", "bar"), false), |
| false, |
| "REPLACE", |
| false, |
| false |
| ); |
| if (NullHandling.replaceWithDefault()) { |
| Assert.assertEquals("bar", lookupExtractionFn.apply(null)); |
| } else { |
| Assert.assertEquals("REPLACE", lookupExtractionFn.apply(null)); |
| } |
| } |
| |
| @Test |
| public void testNullValue() |
| { |
| final LookupExtractionFn lookupExtractionFn = new LookupExtractionFn( |
| new MapLookupExtractor(ImmutableMap.of("foo", ""), false), |
| false, |
| "REPLACE", |
| false, |
| false |
| ); |
| Assert.assertEquals("REPLACE", lookupExtractionFn.apply(null)); |
| } |
| } |