ParserUtilsTest.java example

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package org.apache.ambari.view.hive20.internal.parsers;

import org.junit.Assert;
import org.junit.Test;

import java.util.List;

public class ParserUtilsTest {

  @Test
  public void parseColumnDataTypeDecimalTest(){
    String columnDataTypeString = " decimal(10,2) ";
    List<String> list = ParserUtils.parseColumnDataType(columnDataTypeString);
    Assert.assertEquals("Must contain 3 elements : ", 3, list.size());
    Assert.assertEquals("Failed to find datatype. ", "decimal", list.get(0));
    Assert.assertEquals("Failed to find precision. ", "10", list.get(1));
    Assert.assertEquals("Failed to find scale. ", "2", list.get(2));
  }

  @Test
  public void parseColumnDataTypeDecimalWithSpaceTest(){
    String columnDataTypeString = " decimal ( 10 ,   2 ) ";
    List<String> list = ParserUtils.parseColumnDataType(columnDataTypeString);
    Assert.assertEquals("Must contain 3 elements : ", 3, list.size());
    Assert.assertEquals("Failed to find datatype. ", "decimal", list.get(0));
    Assert.assertEquals("Failed to find precision. ", "10", list.get(1));
    Assert.assertEquals("Failed to find scale. ", "2", list.get(2));
  }

  @Test
  public void parseColumnDataTypeVarcharTest(){
    String columnDataTypeString = " VARCHAR( 10)  ";
    List<String> list = ParserUtils.parseColumnDataType(columnDataTypeString);
    Assert.assertEquals("Must contain 2 elements : ", 3, list.size());
    Assert.assertEquals("Failed to find datatype. ", "VARCHAR", list.get(0));
    Assert.assertEquals("Failed to find precision. ", "10", list.get(1));
    Assert.assertNull("Scale should be null. ", list.get(2));
  }

  @Test
  public void parseColumnDataTypeBooleanTest(){
    String columnDataTypeString = " BOOLEAN  ";
    List<String> list = ParserUtils.parseColumnDataType(columnDataTypeString);
    Assert.assertEquals("Must contain 1 elements : ", 3, list.size());
    Assert.assertEquals("Failed to find datatype. ", "BOOLEAN", list.get(0));
    Assert.assertNull("Precision should be null. ", list.get(1));
    Assert.assertNull("Scale should be null. ", list.get(2));
  }
}