test_table_iterator.cc

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/*
 * (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.
 */
 
#include <memory>
 
#include "eckit/testing/Test.h"
#include "eckit/filesystem/PathName.h"
#include "eckit/config/Resource.h"
 
#include "odc/core/TablesReader.h"
 
using namespace eckit::testing;
using eckit::Log;
 
 
// ------------------------------------------------------------------------------------------------------
 
eckit::Resource<eckit::PathName> testDataPath("$TEST_DATA_DIRECTORY", "..");
 
CASE("Test access Table iterator") {
 
    eckit::PathName filename = testDataPath / "2000010106.odb";
 
    std::unique_ptr<eckit::DataHandle> dh(filename.fileHandle());
    dh->openForRead();
 
    odc::core::TablesReader reader(*dh);
    auto it = reader.begin();
    auto end = reader.end();
 
    size_t numRows = 0;
    size_t tableCount = 0;
    eckit::Offset lastOffset = 0;
 
    EXPECT(dh->estimate() == eckit::Length(155557962));
 
    while (it != end) {
        tableCount++;
 
        EXPECT(it->rowCount() == (tableCount == 333? 1753 : 10000));
        EXPECT(it->nextPosition() > lastOffset);
        EXPECT(it->nextPosition() <= dh->estimate());
        EXPECT(dh->estimate() == eckit::Length(155557962));
        lastOffset = it->nextPosition();
 
        numRows += it->rowCount();
        ++it;
    }
 
    EXPECT(dh->estimate() == eckit::Length(155557962));
    EXPECT(lastOffset == eckit::Offset(155557962));
    EXPECT(numRows == 3321753);
 
    dh->close();
}
 
// ------------------------------------------------------------------------------------------------------
 
int main(int argc, char* argv[]) {
    return run_tests(argc, argv);
}