TestFunctionThin.cc

Go to the documentation of this file.

/*
 * (C) Copyright 1996-2012 ECMWF.
 * 
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
 * In applying this licence, ECMWF does not waive the privileges and immunities 
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */
 
/// \file UnitTest.cc
///
/// @author ECMWF, July 2010
 
const double EPS =   7e-6;
 
#include <cmath>
 
#include "eckit/log/Timer.h"
#include "odc/Select.h"
 
#include "odc/Writer.h"
#include "TestCase.h"
 
using namespace std;
using namespace eckit;
using namespace odc;
 
 
static void setUp()
{
    Timer t("Test thin function");
    odc::Writer<> oda("test_thin.odb");
 
    odc::Writer<>::iterator row = oda.begin();
    row->setNumberOfColumns(1);
 
    row->setColumn(0, "lat", odc::api::REAL);
    
    row->writeHeader();
 
    (*row)[0] = 45.0;
    (*++row)[0] = 45.0;
    (*++row)[0] = 45.0;
    (*++row)[0] = 45.0;
    (*++row)[0] = 45.0;
    (*++row)[0] = 45.0;
}
 
static void tearDown() 
{ 
    PathName("test_thin.odb").unlink();
}
 
static void test()
{
    const string sql = "select thin(2.0,lat) from \"test_thin.odb\";";
 
    Log::info() << "Executing: '" << sql << "'" << std::endl;
 
    int i=0;
    odc::Select oda(sql);
    for(odc::Select::iterator it = oda.begin(); it != oda.end(); ++it) {
      if (i % 2 == 1)
        ASSERT(fabs((*it)[0] - 0.0e0) < EPS); //
      else
        ASSERT(fabs((*it)[0] - 1.0) < EPS); //
      ++i;
    }
 
}
 
 
SIMPLE_TEST(FunctionThin)