Add standalone test for the vehicle layout page

This works by loading offline data rather than doing an online query of
a suitable train booking, which is far more convenient for testing.

tests/CMakeLists.txt

@@ -3,3 +3,6 @@
 
 add_executable(pkpassviewer pkpassviewer.cpp pkpassviewer.qrc)
 target_link_libraries(pkpassviewer itinerary)
+
+add_executable(vehiclelayoutviewer vehiclelayoutviewer.cpp vehiclelayoutviewer.qrc)
+target_link_libraries(vehiclelayoutviewer itinerary)

tests/sbb-vehicle-layout.json

+{
+    "scheduledDepartureTime": "1970-01-01T00:00:00",
+    "stopPoint": {
+        "identifier": {
+            "ibnr": "8507000"
+        },
+        "latitude": 46.949005126953125,
+        "locality": "Bern",
+        "longitude": 7.439121246337891,
+        "name": "Bern HB",
+        "timezone": "Europe/Zurich",
+        "type": "Stop"
+    },
+    "route": {
+        "line": {
+            "mode": "LongDistanceTrain",
+            "name": "IC 8"
+        }
+    },
+    "platformLayout": {
+        "length": 1,
+        "sections": [
+            {
+                "begin": 0,
+                "end": 0.10979928821325302,
+                "name": "H"
+            },
+            {
+                "begin": 0.10979928821325302,
+                "end": 0.22963400185108185,
+                "name": "G"
+            },
+            {
+                "begin": 0.22963400185108185,
+                "end": 0.4096812307834625,
+                "name": "F"
+            },
+            {
+                "begin": 0.4096812307834625,
+                "end": 0.46989375352859497,
+                "name": "E"
+            },
+            {
+                "begin": 0.46989375352859497,
+                "end": 0.5802833437919617,
+                "name": "D"
+            },
+            {
+                "begin": 0.5802833437919617,
+                "end": 0.7001180648803711,
+                "name": "C"
+            },
+            {
+                "begin": 0.7001180648803711,
+                "end": 0.8199527859687805,
+                "name": "B"
+            },
+            {
+                "begin": 0.8199527859687805,
+                "end": 1,
+                "name": "A"
+            }
+        ]
+    },
+    "vehicleLayout": {
+        "direction": "UnknownDirection",
+        "sections": [
+            {
+                "classes": "UnknownClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "A",
+                "type": "Engine"
+            },
+            {
+                "classes": "FirstClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "WheelchairAccessible",
+                "name": "1",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "B",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "FirstClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "name": "3",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "B",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "FirstClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "name": "2",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "C",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "SecondClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "name": "4",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "C",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "SecondClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "name": "6",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "D",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "SecondClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "name": "7",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "D",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "SecondClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "name": "8",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "E",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "SecondClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "NoFeatures",
+                "name": "5",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "F",
+                "type": "PassengerCar"
+            },
+            {
+                "classes": "UnknownClass",
+                "connectedSides": "Front|Back",
+                "deckCount": 1,
+                "features": "BikeStorage",
+                "name": "9",
+                "platformPositionBegin": -1,
+                "platformPositionEnd": -1,
+                "platformSectionName": "F",
+                "type": "PassengerCar"
+            }
+        ]
+    }
+}

tests/vehiclelayoutviewer.cpp

+/*
+    SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+#include "publictransport.h"
+
+#include <KPublicTransport/Stopover>
+
+#include <KLocalizedContext>
+
+#include <QQmlApplicationEngine>
+#include <QQmlContext>
+
+#include <QDebug>
+#include <QFile>
+#include <QGuiApplication>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QUrl>
+
+int main(int argc, char **argv)
+{
+    QCoreApplication::setApplicationName(QStringLiteral("vehiclelayoutviewer"));
+    QCoreApplication::setOrganizationName(QStringLiteral("KDE"));
+    QCoreApplication::setOrganizationDomain(QStringLiteral("kde.org"));
+
+    QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+    QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
+    QGuiApplication app(argc, argv);
+
+    if (app.arguments().size() <= 1) {
+        qCritical("Missing command line argument!");
+        exit(1);
+    }
+
+    QFile file(app.arguments().at(1));
+    if (!file.open(QFile::ReadOnly)) {
+        qCritical("Failed to open file!");
+        exit(1);
+    }
+
+    const auto stopover = KPublicTransport::Stopover::fromJson(QJsonDocument::fromJson(file.readAll()).object());
+
+    qmlRegisterSingletonType("org.kde.itinerary", 1, 0, "PublicTransport", [](QQmlEngine*, QJSEngine *engine) -> QJSValue { \
+        return engine->toScriptValue(PublicTransport()); \
+    });
+
+    QQmlApplicationEngine engine;
+    engine.rootContext()->setContextObject(new KLocalizedContext(&engine));
+    engine.rootContext()->setContextProperty(QStringLiteral("_stopover"), stopover);
+    engine.load(QStringLiteral("qrc:/vehiclelayoutviewer.qml"));
+
+    return app.exec();
+}

tests/vehiclelayoutviewer.qml

+/*
+    SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
+
+    SPDX-License-Identifier: LGPL-2.0-or-later
+*/
+
+import QtQuick 2.5
+import QtQuick.Layouts 1.1
+import QtQuick.Controls 2.1 as QQC2
+import org.kde.kirigami 2.12 as Kirigami
+import org.kde.kpublictransport 1.0 as KPT
+import "." as App
+
+Kirigami.ApplicationWindow {
+    title: "Vehicle Layout Viewer"
+    reachableModeEnabled: false
+
+    width: 480
+    height: 720
+
+    pageStack.initialPage: layoutPage
+
+    KPT.Manager {
+        id: ptMgr;
+    }
+
+    Component {
+        id: layoutPage
+        App.VehicleLayoutPage {
+            stopover: _stopover
+            publicTransportManager: ptMgr
+        }
+    }
+}
+

tests/vehiclelayoutviewer.qrc

+<!--
+    SPDX-FileCopyrightText: 2021 Volker Krause <vkrause@kde.org>
+    SPDX-License-Identifier: CC0-1.0
+-->
+<RCC>
+    <qresource prefix="/">
+        <file>vehiclelayoutviewer.qml</file>
+        <file alias="VehicleLayoutPage.qml">../src/app/VehicleLayoutPage.qml</file>
+    </qresource>
+</RCC>