content: /*
   * 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
   *
   *     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;
  
  import java.io.IOException;
  import java.util.Arrays;
  
  import org.apache.avro.data.TimeConversions;
  import org.apache.avro.generic.IndexedRecord;
  import org.apache.avro.io.DatumReader;
  import org.apache.avro.io.DecoderFactory;
  import org.apache.avro.io.FastReaderBuilder;
  import org.apache.avro.io.JsonDecoder;
  import org.hamcrest.MatcherAssert;
  import org.hamcrest.Matchers;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.Test;
  
  class TestResolver {
  
    /**
     * Test promote action INT -> LONG, with logical type for LONG.
     */
    @Test
    void resolveTime() {
      final Schema writeSchema = Schema.create(Schema.Type.INT);
      final Schema readSchema = new TimeConversions.TimeMicrosConversion().getRecommendedSchema(); // LONG
  
      Resolver.Action action = Resolver.resolve(writeSchema, readSchema);
      Assertions.assertNotNull(action);
      MatcherAssert.assertThat("Wrong class for action", action, Matchers.instanceOf(Resolver.Promote.class));
      Assertions.assertEquals(action.type, Resolver.Action.Type.PROMOTE);
      Assertions.assertNotNull(action.logicalType);
    }
  
    /**
     * Test union type with promote action INT -> LONG, with logical type for LONG.
     */
    @Test
    void resolveUnion() {
      final Schema schema = new TimeConversions.TimeMicrosConversion().getRecommendedSchema();
  
      final Schema writeSchema = Schema.createUnion(Schema.create(Schema.Type.INT));
      final Schema readSchema = Schema.createUnion(schema);
  
      Resolver.Action action = Resolver.resolve(writeSchema, readSchema);
      Assertions.assertNotNull(action);
      Assertions.assertEquals(action.type, Resolver.Action.Type.WRITER_UNION);
      MatcherAssert.assertThat("Wrong class for action", action, Matchers.instanceOf(Resolver.WriterUnion.class));
  
      Assertions.assertEquals(1, ((Resolver.WriterUnion) action).actions.length);
      Resolver.Action innerAction = ((Resolver.WriterUnion) action).actions[0];
  
      MatcherAssert.assertThat("Wrong class for action", innerAction, Matchers.instanceOf(Resolver.ReaderUnion.class));
      Resolver.ReaderUnion innerUnionAction = (Resolver.ReaderUnion) innerAction;
      Resolver.Action promoteAction = innerUnionAction.actualAction;
      Assertions.assertEquals(promoteAction.type, Resolver.Action.Type.PROMOTE);
      Assertions.assertNotNull(promoteAction.logicalType);
    }
  
    @Test
    void resolveEnum() throws IOException {
      final Schema writeSchema = Schema.createEnum("myEnum", "", "n1", Arrays.asList("e1", "e3", "e4"));
      final Schema readSchema = Schema.createEnum("myEnum", "", "n1", Arrays.asList("e1", "e2", "e3"), "e2");
  
      Resolver.Action action = Resolver.resolve(writeSchema, readSchema);
      Assertions.assertNotNull(action);
      Assertions.assertEquals(action.type, Resolver.Action.Type.ENUM);
      MatcherAssert.assertThat("Wrong class for action", action, Matchers.instanceOf(Resolver.EnumAdjust.class));
      Resolver.EnumAdjust adjust = (Resolver.EnumAdjust) action;
  
      Assertions.assertArrayEquals(new int[] { 0, 2, 1 }, adjust.adjustments);
      Assertions.assertEquals("e1", adjust.values[0].toString());
      Assertions.assertEquals("e3", adjust.values[1].toString());
      Assertions.assertEquals("e2", adjust.values[2].toString());
  
      FastReaderBuilder reader = FastReaderBuilder.get();
      Schema writeRecord = Schema.createRecord("rec1", "", "", false,
          Arrays.asList(new Schema.Field("f1", writeSchema, "")));
      Schema readRecord = Schema.createRecord("rec1", "", "", false,
          Arrays.asList(new Schema.Field("f1", readSchema, "")));
      DatumReader<Object> datumReader = reader.createDatumReader(writeRecord, readRecord);
      JsonDecoder e2 = DecoderFactory.get().jsonDecoder(readRecord, "{ \"f1\" : \"e2\" }");
      Object read = datumReader.read(null, e2);
      Assertions.assertNotNull(read);
      MatcherAssert.assertThat("", read, Matchers.instanceOf(IndexedRecord.class));
      IndexedRecord result = (IndexedRecord) read;
      Assertions.assertEquals("e3", result.get(0).toString());
    }
  
    @Test
    void promoteIsValid() {
      Assertions.assertThrows(IllegalArgumentException.class,
          () -> Resolver.Promote.isValid(Schema.create(Schema.Type.INT), Schema.create(Schema.Type.INT)));
  
      Assertions.assertTrue(Resolver.Promote.isValid(Schema.create(Schema.Type.INT), Schema.create(Schema.Type.LONG)));
      Assertions.assertFalse(Resolver.Promote.isValid(Schema.create(Schema.Type.LONG), Schema.create(Schema.Type.INT)));
  
      Assertions.assertTrue(Resolver.Promote.isValid(Schema.create(Schema.Type.INT), Schema.create(Schema.Type.FLOAT)));
      Assertions.assertFalse(Resolver.Promote.isValid(Schema.create(Schema.Type.FLOAT), Schema.create(Schema.Type.INT)));
  
      Assertions
          .assertTrue(Resolver.Promote.isValid(Schema.create(Schema.Type.FLOAT), Schema.create(Schema.Type.DOUBLE)));
      Assertions
          .assertFalse(Resolver.Promote.isValid(Schema.create(Schema.Type.DOUBLE), Schema.create(Schema.Type.FLOAT)));
    }
  }
  