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testqgsjsonutils.cpp
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testqgsjsonutils.cpp
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/***************************************************************************
testqgsjsonutils.cpp
--------------------------------------
Date : September 2016
Copyright : (C) 2016 Patrick Valsecchi
Email : patrick.valsecchi at camptocamp.com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgstest.h"
#include <qgsjsonutils.h>
#include <nlohmann/json.hpp>
#include "qgsvectorlayer.h"
#include "qgsfeature.h"
class TestQgsJsonUtils : public QObject
{
public:
enum JsonAlgs
{
Json,
String
};
Q_ENUM( JsonAlgs )
Q_OBJECT
private slots:
void testStringList()
{
QStringList list;
{
const QString json = QgsJsonUtils::encodeValue( list );
QCOMPARE( json, QString( "[]" ) );
const QVariant back = QgsJsonUtils::parseArray( json, QVariant::String );
QCOMPARE( back.toStringList(), list );
}
{
list << QStringLiteral( "one" ) << QStringLiteral( "<',\"\\>" ) << QStringLiteral( "two" );
const QString json = QgsJsonUtils::encodeValue( list );
QCOMPARE( json, QString( "[\"one\",\"<',\\\"\\\\>\",\"two\"]" ) );
const QVariant back = QgsJsonUtils::parseArray( json, QVariant::String );
QCOMPARE( back.toStringList(), list );
}
}
void testIntList()
{
QVariantList list;
{
list << 1 << -2;
const QString json = QgsJsonUtils::encodeValue( list );
QCOMPARE( json, QString( "[1,-2]" ) );
const QVariantList back = QgsJsonUtils::parseArray( json, QVariant::Int );
QCOMPARE( back, list );
QCOMPARE( back.at( 0 ).type(), QVariant::Int );
}
{
// check invalid entries are ignored
const QVariantList back = QgsJsonUtils::parseArray( QStringLiteral( "[1,\"a\",-2]" ), QVariant::Int );
QCOMPARE( back, list );
}
}
void testDoubleList()
{
QVariantList list;
list << 1.0 << -2.2456;
const QString json = QgsJsonUtils::encodeValue( list );
QCOMPARE( json, QString( "[1,-2.2456]" ) );
const QVariantList back = QgsJsonUtils::parseArray( json, QVariant::Double );
QCOMPARE( back, list );
QCOMPARE( back.at( 0 ).type(), QVariant::Double );
}
void testExportAttributesJson_data()
{
QTest::addColumn<JsonAlgs>( "JsonAlgs" );
QTest::newRow( "Use json" ) << JsonAlgs::Json;
QTest::newRow( "Use old string concat" ) << JsonAlgs::String;
}
void testExportAttributesJson()
{
QFETCH( enum JsonAlgs, JsonAlgs );
QgsVectorLayer vl { QStringLiteral( "Point?field=fldtxt:string&field=fldint:integer&field=flddbl:double" ), QStringLiteral( "mem" ), QStringLiteral( "memory" ) };
QgsFeature feature { vl.fields() };
feature.setAttributes( QgsAttributes() << QStringLiteral( "a value" ) << 1 << 2.0 );
if ( JsonAlgs == JsonAlgs::Json ) // 0.0022
{
QBENCHMARK
{
json j { QgsJsonUtils::exportAttributesToJsonObject( feature, &vl ) };
QCOMPARE( QString::fromStdString( j.dump() ), QStringLiteral( R"raw({"flddbl":2.0,"fldint":1,"fldtxt":"a value"})raw" ) );
}
}
else // 0.0032
{
QBENCHMARK
{
const auto json { QgsJsonUtils::exportAttributes( feature, &vl ) };
QCOMPARE( json, QStringLiteral( "{\"fldtxt\":\"a value\",\n\"fldint\":1,\n\"flddbl\":2}" ) );
}
}
}
void testExportFeatureJson()
{
QgsVectorLayer vl { QStringLiteral( "Polygon?field=fldtxt:string&field=fldint:integer&field=flddbl:double" ), QStringLiteral( "mem" ), QStringLiteral( "memory" ) };
QgsFeature feature { vl.fields() };
feature.setGeometry( QgsGeometry::fromWkt( QStringLiteral( "POLYGON((1.12 1.34,5.45 1.12,5.34 5.33,1.56 5.2,1.12 1.34),(2 2, 3 2, 3 3, 2 3,2 2))" ) ) );
feature.setAttributes( QgsAttributes() << QStringLiteral( "a value" ) << 1 << 2.0 );
QgsJsonExporter exporter { &vl };
const auto expectedJson { QStringLiteral( "{\"bbox\":[[1.12,1.12,5.45,5.33]],\"geometry\":{\"coordinates\":"
"[[[1.12,1.34],[5.45,1.12],[5.34,5.33],[1.56,5.2],[1.12,1.34]],"
"[[2.0,2.0],[3.0,2.0],[3.0,3.0],[2.0,3.0],[2.0,2.0]]],\"type\":\"Polygon\"}"
",\"id\":0,\"properties\":{\"flddbl\":2.0,\"fldint\":1,\"fldtxt\":\"a value\"}"
",\"type\":\"Feature\"}" ) };
const auto j { exporter.exportFeatureToJsonObject( feature ) };
QCOMPARE( QString::fromStdString( j.dump() ), expectedJson );
const auto json { exporter.exportFeature( feature ) };
QCOMPARE( json, expectedJson );
}
void testExportGeomToJson()
{
const QMap<QString, QString> testWkts
{
{
{
QStringLiteral( "LINESTRING(-71.160281 42.258729,-71.160837 42.259113,-71.161144 42.25932)" ),
QStringLiteral( R"json({"coordinates":[[-71.16,42.259],[-71.161,42.259],[-71.161,42.259]],"type":"LineString"})json" )
},
{
QStringLiteral( "MULTILINESTRING((-71.160281 42.258729,-71.160837 42.259113,-71.161144 42.25932), (-70 43.56, -67 44.68))" ),
QStringLiteral( R"json({"coordinates":[[[-71.16,42.259],[-71.161,42.259],[-71.161,42.259]],[[-70.0,43.56],[-67.0,44.68]]],"type":"MultiLineString"})json" )
},
{ QStringLiteral( "POINT(-71.064544 42.28787)" ), QStringLiteral( R"json({"coordinates":[-71.065,42.288],"type":"Point"})json" ) },
{ QStringLiteral( "MULTIPOINT(-71.064544 42.28787, -71.1776585052917 42.3902909739571)" ), QStringLiteral( R"json({"coordinates":[[-71.065,42.288],[-71.178,42.39]],"type":"MultiPoint"})json" ) },
{
QStringLiteral( "POLYGON((-71.1776585052917 42.3902909739571,-71.1776820268866 42.3903701743239,"
"-71.1776063012595 42.3903825660754,-71.1775826583081 42.3903033653531,-71.1776585052917 42.3902909739571))" ),
QStringLiteral( R"json({"coordinates":[[[-71.178,42.39],[-71.178,42.39],[-71.178,42.39],[-71.178,42.39],[-71.178,42.39]]],"type":"Polygon"})json" )
},
{
QStringLiteral( "MULTIPOLYGON(((1 1,5 1,5 5,1 5,1 1),(2 2, 3 2, 3 3, 2 3,2 2)),((3 3,6 2,6 4,3 3)))" ),
QStringLiteral( R"json({"coordinates":[[[[1.0,1.0],[5.0,1.0],[5.0,5.0],[1.0,5.0],[1.0,1.0]],[[2.0,2.0],[3.0,2.0],[3.0,3.0],[2.0,3.0],[2.0,2.0]]],[[[3.0,3.0],[6.0,2.0],[6.0,4.0],[3.0,3.0]]]],"type":"MultiPolygon"})json" )
},
// Note: CIRCULARSTRING json is very long, we will check first three vertices only
{ QStringLiteral( "CIRCULARSTRING(220268 150415,220227 150505,220227 150406)" ), QStringLiteral( R"json({"coordinates":[[220268.0,150415.0],[220268.7,150415.535],[220269.391,150416.081])json" ) },
}
};
for ( const auto &w : testWkts.toStdMap() )
{
const auto g { QgsGeometry::fromWkt( w.first ) };
QVERIFY( !g.isNull( ) );
if ( w.first.startsWith( QStringLiteral( "CIRCULARSTRING" ) ) )
{
QVERIFY( g.asJson( 3 ).startsWith( w.second ) );
QCOMPARE( QString::fromStdString( g.asJsonObject( 3 )["type"].dump() ), QStringLiteral( R"("LineString")" ) );
}
else
{
QCOMPARE( g.asJson( 3 ), w.second );
}
}
}
};
QGSTEST_MAIN( TestQgsJsonUtils )
#include "testqgsjsonutils.moc"