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.extensions.sql.utils;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNull;
  
  import org.apache.beam.sdk.transforms.SerializableFunction;
  import org.apache.beam.sdk.values.Row;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Iterables;
  
  /** Contain helpers to assert {@link Row}s. */
  public class RowAsserts {
  
    /** Asserts result contains single row with an int field. */
    public static SerializableFunction<Iterable<Row>, Void> matchesScalar(int expected) {
      return records -> {
        Row row = Iterables.getOnlyElement(records);
        assertNotNull(row);
        assertEquals(expected, (int) row.getInt32(0));
        return null;
      };
    }
  
    /** Asserts result contains single row with an long field. */
    public static SerializableFunction<Iterable<Row>, Void> matchesScalar(long expected) {
      return records -> {
        Row row = Iterables.getOnlyElement(records);
        assertNotNull(row);
        assertEquals(expected, (long) row.getInt64(0));
        return null;
      };
    }
  
    /** Asserts result contains single row with a double field. */
    public static SerializableFunction<Iterable<Row>, Void> matchesScalar(
        double expected, double delta) {
  
      return input -> {
        Row row = Iterables.getOnlyElement(input);
        assertNotNull(row);
        assertEquals(expected, row.getDouble(0), delta);
        return null;
      };
    }
  
    public static SerializableFunction<Iterable<Row>, Void> matchesScalar(
        float expected, float delta) {
  
      return input -> {
        Row row = Iterables.getOnlyElement(input);
        assertNotNull(row);
        assertEquals(expected, row.getFloat(0), delta);
        return null;
      };
    }
  
    /** Asserts result contains single row with a single null field. */
    public static SerializableFunction<Iterable<Row>, Void> matchesNull() {
      return records -> {
        Row row = Iterables.getOnlyElement(records);
        assertNotNull(row);
        assertNull(row.getValue(0));
        return null;
      };
    }
  }
  