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   * Licensed to the Apache Software Foundation (ASF) under one
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   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
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   *
   *   https://www.apache.org/licenses/LICENSE-2.0
   *
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  package org.apache.avro.message;
  
  import org.apache.avro.Schema;
  import org.apache.avro.compiler.schema.evolve.NestedEvolve1;
  import org.apache.avro.compiler.schema.evolve.NestedEvolve2;
  import org.apache.avro.compiler.schema.evolve.NestedEvolve3;
  import org.apache.avro.compiler.schema.evolve.TestRecord2;
  import org.apache.avro.compiler.schema.evolve.TestRecord3;
  import org.junit.jupiter.api.Test;
  
  import java.nio.ByteBuffer;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class TestCustomSchemaStore {
  
    static class CustomSchemaStore implements SchemaStore {
      Cache cache;
  
      CustomSchemaStore() {
        cache = new Cache();
        cache.addSchema(NestedEvolve1.getClassSchema());
        cache.addSchema(NestedEvolve2.getClassSchema());
      }
  
      @Override
      public Schema findByFingerprint(long fingerprint) {
        return cache.findByFingerprint(fingerprint);
      }
    }
  
    private BinaryMessageDecoder<NestedEvolve1> decoder = NestedEvolve1.createDecoder(new CustomSchemaStore());
  
    @Test
    void compatibleReadWithSchemaFromSchemaStore() throws Exception {
      // Create and encode a NestedEvolve2 record.
      NestedEvolve2.Builder rootBuilder = NestedEvolve2.newBuilder().setRootName("RootName");
      rootBuilder.setNested(TestRecord2.newBuilder().setName("Name").setValue(1).setData("Data").build());
      ByteBuffer nestedEvolve2Buffer = rootBuilder.build().toByteBuffer();
  
      // Decode it
      NestedEvolve1 nestedEvolve1 = decoder.decode(nestedEvolve2Buffer);
  
      // Should work
      assertEquals(nestedEvolve1.getRootName(), "RootName");
      assertEquals(nestedEvolve1.getNested().getName(), "Name");
      assertEquals(nestedEvolve1.getNested().getValue(), 1);
    }
  
    @Test
    void incompatibleReadWithSchemaFromSchemaStore() throws Exception {
      assertThrows(MissingSchemaException.class, () -> {
        // Create and encode a NestedEvolve3 record.
        NestedEvolve3.Builder rootBuilder = NestedEvolve3.newBuilder().setRootName("RootName");
        rootBuilder.setNested(TestRecord3.newBuilder().setName("Name").setData("Data").build());
        ByteBuffer nestedEvolve3Buffer = rootBuilder.build().toByteBuffer();
  
        // Decode it ... should fail because schema for 'NestedEvolve3' is not available
        // in the SchemaStore
        decoder.decode(nestedEvolve3Buffer);
      });
    }
  
  }
  