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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 "eckit/testing/Test.h"
#include "eckit/types/FloatCompare.h"
#include "odc/Select.h"
#include "odc/sql/TODATable.h"
using namespace eckit::testing;
// ------------------------------------------------------------------------------------------------------
CASE("Simple select on CSV (one column) data") {
// Construct some data to use
std::stringstream DATA;
DATA << "a:REAL\n";
for (size_t i = 1; i <= 10; i++) {
DATA << i << "\n";
}
SECTION("Select with where condition") {
odc::Select select("select * where a > 4");
select.database().addImplicitTable(new odc::sql::ODBCSVTable(select.database(), DATA, "input", ","));
size_t count = 0;
for (odc::Select::iterator it = select.begin(); it != select.end(); ++it) {
count++;
EXPECT((*it)[0] == count+4);
}
EXPECT(count == 6);
}
SECTION("Sum one column") {
odc::Select select("select sum(a), count(a), count(*);");
select.database().addImplicitTable(new odc::sql::ODBCSVTable(select.database(), DATA, "input", ","));
odc::Select::iterator it = select.begin();
EXPECT(it != select.end());
EXPECT((*it)[0] == 55);
EXPECT((*it)[1] == 10);
EXPECT((*it)[2] == 10);
++it;
EXPECT(it == select.end());
}
SECTION("Mixed output and aggregate") {
odc::Select select("select a, sum(a), count(a)");
select.database().addImplicitTable(new odc::sql::ODBCSVTable(select.database(), DATA, "input", ","));
odc::Select::iterator it = select.begin();
EXPECT(it != select.end());
// n.b. as all values of a are different, we get counts of 1
size_t count = 0;
for (odc::Select::iterator it = select.begin(); it != select.end(); ++it) {
count++;
EXPECT(it->data(0) == count);
EXPECT(it->data(1) == count);
EXPECT(it->data(2) == 1);
}
EXPECT(count = 10);
}
}
CASE("Simple select on CSV (two columns) data") {
// Construct some data to use
std::stringstream DATA;
DATA << "a:REAL,b:STRING,c:INTEGER,d:INTEGER\n";
for (size_t i = 1; i <= 10; i++) {
DATA << i << ",";
// length=16/17 --> tests overflowing 16 char and resizing string on last row
DATA << "a-long-" << i << "-str****,";
DATA << 11-i << ",";
DATA << int(i/3) << "\n";
}
SECTION("Select with where condition") {
odc::Select select("select * where a > 4");
select.database().addImplicitTable(new odc::sql::ODBCSVTable(select.database(), DATA, "input", ","));
size_t count = 0;
for (odc::Select::iterator it = select.begin(); it != select.end(); ++it) {
count++;
std::stringstream colb;
colb << "a-long-" << (count+4) << "-str****";
EXPECT(it->data(0) == count+4);
EXPECT(it->dataSizeDoubles(1) == (count == 6 ? 3 : 2));
EXPECT(::strncmp(colb.str().c_str(), (char*)&it->data(1), it->dataSizeDoubles(1)*sizeof(double)) == 0);
EXPECT(it->data(2) == 11-(count+4));
}
EXPECT(count == 6);
}
SECTION("Sum and count") {
odc::Select select("select sum(a), count(a), count(*), sum(c), count(c), count(b);");
select.database().addImplicitTable(new odc::sql::ODBCSVTable(select.database(), DATA, "input", ","));
odc::Select::iterator it = select.begin();
EXPECT(it != select.end());
EXPECT(it->data(0) == 55);
EXPECT(it->data(1) == 10);
EXPECT(it->data(2) == 10);
EXPECT(it->data(3) == 55);
EXPECT(it->data(4) == 10);
EXPECT(it->data(5) == 10);
++it;
EXPECT(it == select.end());
}
SECTION("Mixed output and aggregate") {
odc::Select select("select d, sum(a), count(c)");
select.database().addImplicitTable(new odc::sql::ODBCSVTable(select.database(), DATA, "input", ","));
odc::Select::iterator it = select.begin();
EXPECT(it != select.end());
bool found[4] = {false, false, false, false};
for (odc::Select::iterator it = select.begin(); it != select.end(); ++it) {
EXPECT(0 <= it->data(0) && 3 >= it->data(0));
found[int(it->data(0))] = true;
switch(int(it->data(0))) {
case 0:
EXPECT(it->data(1) == 3);
EXPECT(it->data(2) == 2);
break;
case 1:
EXPECT(it->data(1) == 12);
EXPECT(it->data(2) == 3);
break;
case 2:
EXPECT(it->data(1) == 21);
EXPECT(it->data(2) == 3);
break;
case 3:
EXPECT(it->data(1) == 19);
EXPECT(it->data(2) == 2);
break;
default:
ASSERT(false);
}
}
EXPECT(std::all_of(std::begin(found), std::end(found), [](bool x){return x;}));
}
}
// ------------------------------------------------------------------------------------------------------
int main(int argc, char* argv[]) {
return run_tests(argc, argv);
}
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