| /* |
| * Copyright 2016 The Apache Software Foundation. |
| * |
| * 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 |
| * |
| * https://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.avro.io.parsing; |
| |
| import static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.avro.Schema; |
| import org.junit.Test; |
| |
| /** |
| * Unit test to verify that recursive schemas are flattened correctly. See |
| * AVRO-1667. |
| */ |
| public class SymbolTest { |
| |
| private static final String SCHEMA = "{\"type\":\"record\",\"name\":\"SampleNode\"," |
| + "\"namespace\":\"org.spf4j.ssdump2.avro\",\n" + " \"fields\":[\n" |
| + " {\"name\":\"count\",\"type\":\"int\",\"default\":0},\n" + " {\"name\":\"subNodes\",\"type\":\n" |
| + " {\"type\":\"array\",\"items\":{\n" + " \"type\":\"record\",\"name\":\"SamplePair\",\n" |
| + " \"fields\":[\n" + " {\"name\":\"method\",\"type\":\n" |
| + " {\"type\":\"record\",\"name\":\"Method\",\n" + " \"fields\":[\n" |
| + " {\"name\":\"declaringClass\",\"type\":{\"type\":\"string\",\"avro.java.string\":\"String\"}},\n" |
| + " {\"name\":\"methodName\",\"type\":{\"type\":\"string\",\"avro.java.string\":\"String\"}}\n" |
| + " ]}},\n" + " {\"name\":\"node\",\"type\":\"SampleNode\"}]}}}]}"; |
| |
| @Test |
| public void testSomeMethod() throws IOException { |
| Schema schema = new Schema.Parser().parse(SCHEMA); |
| Symbol root = new ResolvingGrammarGenerator().generate(schema, schema); |
| validateNonNull(root, new HashSet<>()); |
| } |
| |
| private static void validateNonNull(final Symbol symb, Set<Symbol> seen) { |
| if (seen.contains(symb)) { |
| return; |
| } else { |
| seen.add(symb); |
| } |
| if (symb.production != null) { |
| for (Symbol s : symb.production) { |
| if (s == null) { |
| fail("invalid parsing tree should not contain nulls"); |
| } |
| if (s.kind != Symbol.Kind.ROOT) { |
| validateNonNull(s, seen); |
| } |
| } |
| } |
| } |
| } |