diff --git a/wallpapers/image/plugin/autotests/CMakeLists.txt b/wallpapers/image/plugin/autotests/CMakeLists.txt
index 6faf2953c..c0ba1c600 100644
--- a/wallpapers/image/plugin/autotests/CMakeLists.txt
+++ b/wallpapers/image/plugin/autotests/CMakeLists.txt
@@ -12,3 +12,7 @@ ecm_add_test(test_imagefinder.cpp TEST_NAME testimagefinder
 # PackageFinder test
 ecm_add_test(test_packagefinder.cpp TEST_NAME testpackageimagefinder
     LINK_LIBRARIES Qt::Test plasma_wallpaper_imageplugin_static)
+
+# ImageListModel test
+ecm_add_test(test_imagelistmodel.cpp TEST_NAME testimagelistmodel
+    LINK_LIBRARIES Qt::Test plasma_wallpaper_imageplugin_static)
diff --git a/wallpapers/image/plugin/autotests/test_imagelistmodel.cpp b/wallpapers/image/plugin/autotests/test_imagelistmodel.cpp
new file mode 100644
index 000000000..a0749a68e
--- /dev/null
+++ b/wallpapers/image/plugin/autotests/test_imagelistmodel.cpp
@@ -0,0 +1,240 @@
+/*
+    SPDX-FileCopyrightText: 2022 Fushan Wen <qydwhotmail@gmail.com>
+
+    SPDX-License-Identifier: GPL-2.0-or-later
+*/
+
+#include <QtTest>
+
+#include <KIO/PreviewJob>
+
+#include "../model/imagelistmodel.h"
+
+class ImageListModelTest : public QObject
+{
+    Q_OBJECT
+
+private Q_SLOTS:
+    void initTestCase();
+    void init();
+    void cleanup();
+    void cleanupTestCase();
+
+    void testImageListModelData();
+    void testImageListModelIndexOf();
+    void testImageListModelLoad();
+    void testImageListModelAddBackground();
+    void testImageListModelRemoveBackground();
+    void testImageListModelRemoveLocalBackground();
+
+private:
+    QPointer<ImageListModel> m_model = nullptr;
+    QPointer<QSignalSpy> m_countSpy = nullptr;
+    QPointer<QSignalSpy> m_dataSpy = nullptr;
+
+    QDir m_dataDir;
+    QDir m_alternateDir;
+    QString m_wallpaperPath;
+    QString m_dummyWallpaperPath;
+    QSize m_targetSize;
+};
+
+void ImageListModelTest::initTestCase()
+{
+    m_dataDir = QDir(QFINDTESTDATA("testdata/default"));
+    m_alternateDir = QDir(QFINDTESTDATA("testdata/alternate"));
+    QVERIFY(!m_dataDir.isEmpty());
+    QVERIFY(!m_alternateDir.isEmpty());
+
+    m_wallpaperPath = m_dataDir.absoluteFilePath(QStringLiteral("wallpaper.jpg.jpg"));
+    m_dummyWallpaperPath = m_alternateDir.absoluteFilePath(QStringLiteral("dummy.jpg"));
+
+    m_targetSize = QSize(1920, 1080);
+
+    QStandardPaths::setTestModeEnabled(true);
+}
+
+void ImageListModelTest::init()
+{
+    m_model = new ImageListModel(m_targetSize, this);
+    m_countSpy = new QSignalSpy(m_model, &ImageListModel::countChanged);
+    m_dataSpy = new QSignalSpy(m_model, &ImageListModel::dataChanged);
+
+    // Test loading data
+    m_model->load({m_dataDir.absolutePath()});
+    m_countSpy->wait(10 * 1000);
+    QCOMPARE(m_countSpy->size(), 1);
+    m_countSpy->clear();
+    QCOMPARE(m_model->rowCount(), 1);
+}
+
+void ImageListModelTest::cleanup()
+{
+    m_model->deleteLater();
+    m_countSpy->deleteLater();
+    m_dataSpy->deleteLater();
+}
+
+void ImageListModelTest::cleanupTestCase()
+{
+    const QString standardPath = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + QStringLiteral("/wallpapers/");
+
+    QDir(standardPath).removeRecursively();
+}
+
+void ImageListModelTest::testImageListModelData()
+{
+    QPersistentModelIndex idx = m_model->index(0, 0);
+    QVERIFY(idx.isValid());
+
+    // Should return the complete base name for wallpaper.jpg.jpg
+    QCOMPARE(idx.data(Qt::DisplayRole).toString(), QStringLiteral("wallpaper.jpg"));
+
+    QCOMPARE(idx.data(ImageRoles::ScreenshotRole), QVariant()); // Not cached yet
+    if (!KIO::PreviewJob::availablePlugins().empty()) {
+        m_dataSpy->wait();
+        QCOMPARE(m_dataSpy->size(), 1);
+        QCOMPARE(m_dataSpy->takeFirst().at(2).value<QVector<int>>().at(0), ImageRoles::ScreenshotRole);
+        QVERIFY(!idx.data(ImageRoles::ScreenshotRole).value<QPixmap>().isNull());
+    }
+
+    QCOMPARE(idx.data(ImageRoles::AuthorRole).toString(), QString());
+
+    QCOMPARE(idx.data(ImageRoles::ResolutionRole).toString(), QString());
+    m_dataSpy->wait();
+    QCOMPARE(m_dataSpy->size(), 1);
+    QCOMPARE(m_dataSpy->takeFirst().at(2).value<QVector<int>>().at(0), ImageRoles::ResolutionRole);
+    QCOMPARE(idx.data(ImageRoles::ResolutionRole).toString(), QStringLiteral("15x16"));
+
+    QCOMPARE(idx.data(ImageRoles::PathRole).toUrl(), QUrl::fromLocalFile(m_wallpaperPath));
+    QCOMPARE(idx.data(ImageRoles::PackageNameRole).toString(), m_wallpaperPath);
+
+    QCOMPARE(idx.data(ImageRoles::RemovableRole).toBool(), false);
+    QCOMPARE(idx.data(ImageRoles::PendingDeletionRole).toBool(), false);
+}
+
+void ImageListModelTest::testImageListModelIndexOf()
+{
+    QCOMPARE(m_model->indexOf(m_wallpaperPath), 0);
+    QCOMPARE(m_model->indexOf(QUrl::fromLocalFile(m_wallpaperPath).toString()), 0);
+    QCOMPARE(m_model->indexOf(m_dataDir.absoluteFilePath(QStringLiteral(".wallpaper.jpg"))), -1);
+}
+
+void ImageListModelTest::testImageListModelLoad()
+{
+    m_model->load({m_alternateDir.absolutePath()});
+    m_countSpy->wait(10 * 1000);
+    QCOMPARE(m_countSpy->size(), 1);
+    m_countSpy->clear();
+    QCOMPARE(m_model->rowCount(), 1);
+    QCOMPARE(m_model->index(0, 0).data(Qt::DisplayRole), QStringLiteral("dummy"));
+}
+
+void ImageListModelTest::testImageListModelAddBackground()
+{
+    // Case 1: add a valid image
+    QStringList results = m_model->addBackground(m_dummyWallpaperPath);
+    QCOMPARE(m_countSpy->size(), 1);
+    m_countSpy->clear();
+    QCOMPARE(results.size(), 1);
+    QCOMPARE(results.at(0), m_dummyWallpaperPath);
+    QCOMPARE(m_model->rowCount(), 2);
+
+    QPersistentModelIndex idx = m_model->index(0, 0); // This is the newly added item.
+    QVERIFY(idx.isValid());
+
+    QCOMPARE(idx.data(Qt::DisplayRole).toString(), QStringLiteral("dummy"));
+    QCOMPARE(idx.data(ImageRoles::RemovableRole).toBool(), true);
+
+    // Case 2: add an existing image
+    results = m_model->addBackground(m_dummyWallpaperPath);
+    QCOMPARE(results.size(), 0);
+    QCOMPARE(m_countSpy->size(), 0);
+
+    // Case 3: add an unexsting image
+    results = m_model->addBackground(m_alternateDir.absoluteFilePath(QStringLiteral("thisimagedoesnotexist.jpg")));
+    QCOMPARE(results.size(), 0);
+    QCOMPARE(m_countSpy->size(), 0);
+
+    // Case 4: add a hidden image
+    QVERIFY(QFile::exists(m_dataDir.absoluteFilePath(QStringLiteral(".wallpaper.jpg"))));
+    results = m_model->addBackground(m_dataDir.absoluteFilePath(QStringLiteral(".wallpaper.jpg")));
+    QCOMPARE(results.size(), 0);
+    QCOMPARE(m_countSpy->size(), 0);
+
+    // Case 5: path is empty
+    results = m_model->addBackground(QString());
+    QCOMPARE(results.size(), 0);
+    QCOMPARE(m_countSpy->size(), 0);
+
+    // Case 6: add a non-image file
+    results = m_model->addBackground(m_alternateDir.absoluteFilePath(QStringLiteral("thisisnotanimage.txt")));
+    QCOMPARE(results.size(), 0);
+    QCOMPARE(m_countSpy->size(), 0);
+
+    // Test PendingDeletionRole
+    QVERIFY(m_model->setData(idx, true, ImageRoles::PendingDeletionRole));
+    QCOMPARE(m_dataSpy->size(), 1);
+    QCOMPARE(m_dataSpy->takeFirst().at(2).value<QVector<int>>().at(0), ImageRoles::PendingDeletionRole);
+    QCOMPARE(idx.data(ImageRoles::PendingDeletionRole).toBool(), true);
+}
+
+void ImageListModelTest::testImageListModelRemoveBackground()
+{
+    m_model->addBackground(m_dummyWallpaperPath);
+    m_countSpy->clear();
+    QCOMPARE(m_model->m_removableWallpapers.size(), 1);
+    QCOMPARE(m_model->m_removableWallpapers.at(0), m_dummyWallpaperPath);
+
+    QStringList results;
+
+    // Case 1: path is empty
+    results = m_model->removeBackground(QString());
+    QCOMPARE(m_countSpy->size(), 0);
+    QCOMPARE(results.size(), 0);
+    QCOMPARE(m_model->m_removableWallpapers.size(), 1);
+
+    // Case 2: remove a not added image
+    results = m_model->removeBackground(m_alternateDir.absoluteFilePath(QStringLiteral("thisimagedoesnotexist.jpg")));
+    QCOMPARE(m_countSpy->size(), 0);
+    QCOMPARE(results.size(), 0);
+    QCOMPARE(m_model->m_removableWallpapers.size(), 1);
+
+    // Case 3: remove an existing image
+    results = m_model->removeBackground(m_dummyWallpaperPath);
+    QCOMPARE(m_countSpy->size(), 1);
+    m_countSpy->clear();
+    QCOMPARE(results.size(), 1);
+    QCOMPARE(results.at(0), m_dummyWallpaperPath);
+    QCOMPARE(m_model->rowCount(), 1);
+    QCOMPARE(m_model->m_removableWallpapers.size(), 0);
+}
+
+void ImageListModelTest::testImageListModelRemoveLocalBackground()
+{
+    const QString standardPath = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + QStringLiteral("/wallpapers/");
+    QFile imageFile(m_wallpaperPath);
+
+    QVERIFY(QDir(standardPath).mkpath(standardPath));
+    QVERIFY(imageFile.copy(standardPath + QStringLiteral("wallpaper.jpg.jpg")));
+
+    m_model->load({standardPath});
+    QVERIFY(m_countSpy->wait(10 * 1000));
+    m_countSpy->clear();
+
+    QPersistentModelIndex idx = m_model->index(0, 0);
+    QCOMPARE(idx.data(Qt::DisplayRole).toString(), QStringLiteral("wallpaper.jpg"));
+    QCOMPARE(idx.data(ImageRoles::RemovableRole).toBool(), true);
+
+    m_model->removeBackground(standardPath + QStringLiteral("wallpaper.jpg.jpg"));
+    QCOMPARE(m_countSpy->size(), 1);
+    m_countSpy->clear();
+
+    // The local wallpaper should be deleted.
+    QVERIFY(!QFile::exists(standardPath + QStringLiteral("wallpaper.jpg.jpg")));
+    QVERIFY(QDir(standardPath).rmdir(standardPath));
+}
+
+QTEST_MAIN(ImageListModelTest)
+
+#include "test_imagelistmodel.moc"
diff --git a/wallpapers/image/plugin/autotests/testdata/alternate/dummy.jpg b/wallpapers/image/plugin/autotests/testdata/alternate/dummy.jpg
new file mode 100644
index 000000000..b8217aeba
Binary files /dev/null and b/wallpapers/image/plugin/autotests/testdata/alternate/dummy.jpg differ
diff --git a/wallpapers/image/plugin/autotests/testdata/alternate/dummy/contents/images/1280x1024.jpg b/wallpapers/image/plugin/autotests/testdata/alternate/dummy/contents/images/1280x1024.jpg
new file mode 100644
index 000000000..b8217aeba
Binary files /dev/null and b/wallpapers/image/plugin/autotests/testdata/alternate/dummy/contents/images/1280x1024.jpg differ
diff --git a/wallpapers/image/plugin/autotests/testdata/alternate/dummy/metadata.desktop b/wallpapers/image/plugin/autotests/testdata/alternate/dummy/metadata.desktop
new file mode 100644
index 000000000..833479832
--- /dev/null
+++ b/wallpapers/image/plugin/autotests/testdata/alternate/dummy/metadata.desktop
@@ -0,0 +1,9 @@
+[Desktop Entry]
+Name=Dummy wallpaper (For test purpose, don't translate!)
+
+X-KDE-PluginInfo-Name=Azul-openSUSE
+X-KDE-PluginInfo-Author=openSUSE Artwork Team
+X-KDE-PluginInfo-Email=opensuse-artwork@opensuse.org
+X-KDE-PluginInfo-License=GPLv2
+
+
diff --git a/wallpapers/image/plugin/autotests/testdata/alternate/thisisnotanimage.txt b/wallpapers/image/plugin/autotests/testdata/alternate/thisisnotanimage.txt
new file mode 100644
index 000000000..8d1c8b69c
--- /dev/null
+++ b/wallpapers/image/plugin/autotests/testdata/alternate/thisisnotanimage.txt
@@ -0,0 +1 @@
+