org.apache.beam.sdk.extensions.sql.utils.RowAsserts.java Source code

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Here is the source code for org.apache.beam.sdk.extensions.sql.utils.RowAsserts.java

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/*
 * 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 com.google.common.collect.Iterables;
import org.apache.beam.sdk.transforms.SerializableFunction;
import org.apache.beam.sdk.values.Row;

/** 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;
        };
    }
}