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
   *
   *     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.beam.sdk.schemas;
  
  import static org.junit.Assert.assertEquals;
  
  import org.apache.beam.sdk.schemas.Schema.FieldType;
  import org.junit.Test;
  
  /** Tests for {@link org.apache.beam.sdk.schemas.SchemaUtils}. */
  public class SchemaUtilsTest {
    @Test
    public void testWidenPrimitives() {
      Schema schema1 =
          Schema.builder()
              .addField("field1", FieldType.INT32)
              .addNullableField("field2", FieldType.STRING)
              .build();
      Schema schema2 =
          Schema.builder()
              .addNullableField("field3", FieldType.INT32)
              .addField("field4", FieldType.STRING)
              .build();
      Schema expected =
          Schema.builder()
              .addNullableField("field1", FieldType.INT32)
              .addNullableField("field2", FieldType.STRING)
              .build();
      assertEquals(expected, SchemaUtils.mergeWideningNullable(schema1, schema2));
    }
  
    @Test
    public void testWidenNested() {
      Schema schema1 =
          Schema.builder()
              .addField("field1", FieldType.INT32)
              .addNullableField("field2", FieldType.STRING)
              .build();
      Schema schema2 =
          Schema.builder()
              .addNullableField("field3", FieldType.INT32)
              .addField("field4", FieldType.STRING)
              .build();
      Schema top1 = Schema.builder().addField("top1", FieldType.row(schema1)).build();
      Schema top2 = Schema.builder().addField("top2", FieldType.row(schema2)).build();
      Schema expected =
          Schema.builder()
              .addNullableField("field1", FieldType.INT32)
              .addNullableField("field2", FieldType.STRING)
              .build();
      Schema expectedTop = Schema.builder().addField("top1", FieldType.row(expected)).build();
  
      assertEquals(expectedTop, SchemaUtils.mergeWideningNullable(top1, top2));
    }
  
    @Test
    public void testWidenArray() {
      Schema schema1 = Schema.builder().addArrayField("field1", FieldType.INT32).build();
      Schema schema2 =
          Schema.builder().addArrayField("field1", FieldType.INT32.withNullable(true)).build();
      Schema expected =
          Schema.builder().addArrayField("field1", FieldType.INT32.withNullable(true)).build();
      assertEquals(expected, SchemaUtils.mergeWideningNullable(schema1, schema2));
    }
  
    @Test
    public void testWidenIterable() {
      Schema schema1 = Schema.builder().addIterableField("field1", FieldType.INT32).build();
      Schema schema2 =
          Schema.builder().addIterableField("field1", FieldType.INT32.withNullable(true)).build();
      Schema expected =
          Schema.builder().addIterableField("field1", FieldType.INT32.withNullable(true)).build();
      assertEquals(expected, SchemaUtils.mergeWideningNullable(schema1, schema2));
    }
  
    @Test
    public void testWidenMap() {
      Schema schema1 =
          Schema.builder().addMapField("field1", FieldType.INT32, FieldType.INT32).build();
      Schema schema2 =
          Schema.builder()
              .addMapField(
                  "field1", FieldType.INT32.withNullable(true), FieldType.INT32.withNullable(true))
              .build();
      Schema expected =
          Schema.builder()
              .addMapField(
                  "field1", FieldType.INT32.withNullable(true), FieldType.INT32.withNullable(true))
              .build();
      assertEquals(expected, SchemaUtils.mergeWideningNullable(schema1, schema2));
    }
  }
  