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.calcite.adapter.file;
  
  import org.junit.jupiter.api.Test;
  
  import java.math.BigDecimal;
  
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.MatcherAssert.assertThat;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  /**
   * Test for the {@link CsvEnumerator}.
   */
  @SuppressWarnings("SameParameterValue")
  class CsvEnumeratorTest {
  
    @Test void testParseDecimalScaleRounding() {
      checkParse("123.45", 5, 2, "123.45");
      checkParse("123.455", 5, 2, "123.46");
      checkParse("-123.455", 5, 2, "-123.46");
      checkParse("123.454", 5, 2, "123.45");
      checkParse("-123.454", 5, 2, "-123.45");
    }
  
    private static void checkParse(String s, int precision, int scale,
        String expected) {
      assertThat(CsvEnumerator.parseDecimal(precision, scale, s),
          is(new BigDecimal(expected)));
    }
  
    @Test void testParseDecimalPrecisionExceeded() {
      checkThrows(4, 0, "1e+5");
      checkThrows(4, 0, "-1e+5");
      checkThrows(4, 0, "12345");
      checkThrows(4, 0, "-12345");
      checkThrows(4, 2, "123.45");
      checkThrows(4, 2, "-123.45");
    }
  
    private static void checkThrows(int precision, int scale, String s) {
      assertThrows(IllegalArgumentException.class,
          () -> CsvEnumerator.parseDecimal(precision, scale, s));
    }
  }
  