content: package com.alibaba.druid.bvt.sql.eval;
  
  import com.alibaba.druid.sql.visitor.SQLEvalVisitorUtils;
  import com.alibaba.druid.util.JdbcConstants;
  import junit.framework.TestCase;
  
  public class EvalMethodLog10Test extends TestCase {
      public void test_reverse() throws Exception {
          assertEquals(Math.log10(1), SQLEvalVisitorUtils.evalExpr(JdbcConstants.MYSQL, "log10(1)"));
          assertEquals(Math.log10(1.001), SQLEvalVisitorUtils.evalExpr(JdbcConstants.MYSQL, "log10(1.001)"));
          assertEquals(Math.log10(0), SQLEvalVisitorUtils.evalExpr(JdbcConstants.MYSQL, "log10(0)"));
      }
  
      public void test_error() throws Exception {
          Exception error = null;
          try {
              SQLEvalVisitorUtils.evalExpr(JdbcConstants.MYSQL, "log10()", 12L);
          } catch (Exception e) {
              error = e;
          }
          assertNotNull(error);
      }
  
      public void test_error_1() throws Exception {
          Exception error = null;
          try {
              SQLEvalVisitorUtils.evalExpr(JdbcConstants.MYSQL, "log10(a)");
          } catch (Exception e) {
              error = e;
          }
          assertNotNull(error);
      }
  }
  