core/src/test/java/org/apache/iceberg/TestMetricsModes.java

/*
 * 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
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 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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package org.apache.iceberg;

import java.util.Map;
import org.apache.iceberg.MetricsModes.Counts;
import org.apache.iceberg.MetricsModes.Full;
import org.apache.iceberg.MetricsModes.None;
import org.apache.iceberg.MetricsModes.Truncate;
import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
import org.junit.Assert;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

public class TestMetricsModes {

  @Rule
  public ExpectedException exceptionRule = ExpectedException.none();

  @Test
  public void testMetricsModeParsing() {
    Assert.assertEquals(None.get(), MetricsModes.fromString("none"));
    Assert.assertEquals(None.get(), MetricsModes.fromString("nOnE"));
    Assert.assertEquals(Counts.get(), MetricsModes.fromString("counts"));
    Assert.assertEquals(Counts.get(), MetricsModes.fromString("coUntS"));
    Assert.assertEquals(Truncate.withLength(1), MetricsModes.fromString("truncate(1)"));
    Assert.assertEquals(Truncate.withLength(10), MetricsModes.fromString("truNcAte(10)"));
    Assert.assertEquals(Full.get(), MetricsModes.fromString("full"));
    Assert.assertEquals(Full.get(), MetricsModes.fromString("FULL"));
  }

  @Test
  public void testInvalidTruncationLength() {
    exceptionRule.expect(IllegalArgumentException.class);
    exceptionRule.expectMessage("length should be positive");
    MetricsModes.fromString("truncate(0)");
  }

  @Test
  public void testInvalidColumnModeValue() {
    Map<String, String> properties = ImmutableMap.of(
        TableProperties.DEFAULT_WRITE_METRICS_MODE, "full",
        TableProperties.METRICS_MODE_COLUMN_CONF_PREFIX + "col", "troncate(5)");

    MetricsConfig config = MetricsConfig.fromProperties(properties);
    Assert.assertEquals("Invalid mode should be defaulted to table default (full)",
        MetricsModes.Full.get(), config.columnMode("col"));
  }

  @Test
  public void testInvalidDefaultColumnModeValue() {
    Map<String, String> properties = ImmutableMap.of(
        TableProperties.DEFAULT_WRITE_METRICS_MODE, "fuull",
        TableProperties.METRICS_MODE_COLUMN_CONF_PREFIX + "col", "troncate(5)");

    MetricsConfig config = MetricsConfig.fromProperties(properties);
    Assert.assertEquals("Invalid mode should be defaulted to library default (truncate(16))",
        MetricsModes.Truncate.withLength(16), config.columnMode("col"));
  }
}