X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/15faff457dd5ff609b3d6d824e0366beae1abe28..258f0f60feb76876c846294c23121d41997ddc34:/src/tests/kfileitemmodeltest.cpp

diff --git a/src/tests/kfileitemmodeltest.cpp b/src/tests/kfileitemmodeltest.cpp
index 9d53ea7e6..797920246 100644
--- a/src/tests/kfileitemmodeltest.cpp
+++ b/src/tests/kfileitemmodeltest.cpp
@@ -21,6 +21,8 @@
 #include <qtest_kde.h>
 
 #include <KDirLister>
+#include <kio/job.h>
+
 #include "kitemviews/kfileitemmodel.h"
 #include "kitemviews/private/kfileitemmodeldirlister.h"
 #include "testdir.h"
@@ -47,6 +49,7 @@ namespace {
     const int DefaultTimeout = 5000;
 };
 
+Q_DECLARE_METATYPE(KItemRange)
 Q_DECLARE_METATYPE(KItemRangeList)
 Q_DECLARE_METATYPE(QList<int>)
 
@@ -67,18 +70,25 @@ private slots:
     void testSetData();
     void testSetDataWithModifiedSortRole_data();
     void testSetDataWithModifiedSortRole();
+    void testChangeSortRole();
+    void testResortAfterChangingName();
     void testModelConsistencyWhenInsertingItems();
     void testItemRangeConsistencyWhenInsertingItems();
     void testExpandItems();
     void testExpandParentItems();
+    void testMakeExpandedItemHidden();
     void testSorting();
-
     void testIndexForKeyboardSearch();
-
     void testNameFilter();
+    void testEmptyPath();
+    void testRefreshExpandedItem();
+    void testRemoveHiddenItems();
+    void collapseParentOfHiddenItems();
+    void removeParentOfHiddenItems();
+    void testGeneralParentChildRelationships();
+    void testNameRoleGroups();
 
 private:
-    bool isModelConsistent() const;
     QStringList itemsInModel() const;
 
 private:
@@ -99,6 +109,9 @@ void KFileItemModelTest::init()
     m_testDir = new TestDir();
     m_model = new KFileItemModel();
     m_model->m_dirLister->setAutoUpdate(false);
+
+    // Reduce the timer interval to make the test run faster.
+    m_model->m_resortAllItemsTimer->setInterval(0);
 }
 
 void KFileItemModelTest::cleanup()
@@ -153,7 +166,7 @@ void KFileItemModelTest::testNewItems()
 
     QCOMPARE(m_model->count(), 3);
 
-    QVERIFY(isModelConsistent());
+    QVERIFY(m_model->isConsistent());
 }
 
 void KFileItemModelTest::testRemoveItems()
@@ -163,13 +176,13 @@ void KFileItemModelTest::testRemoveItems()
     m_model->loadDirectory(m_testDir->url());
     QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
     QCOMPARE(m_model->count(), 2);
-    QVERIFY(isModelConsistent());
+    QVERIFY(m_model->isConsistent());
 
     m_testDir->removeFile("a.txt");
     m_model->m_dirLister->updateDirectory(m_testDir->url());
     QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsRemoved(KItemRangeList)), DefaultTimeout));
     QCOMPARE(m_model->count(), 1);
-    QVERIFY(isModelConsistent());
+    QVERIFY(m_model->isConsistent());
 }
 
 void KFileItemModelTest::testDirLoadingCompleted()
@@ -212,7 +225,7 @@ void KFileItemModelTest::testDirLoadingCompleted()
     QCOMPARE(itemsRemovedSpy.count(), 2);
     QCOMPARE(m_model->count(), 4);
 
-    QVERIFY(isModelConsistent());
+    QVERIFY(m_model->isConsistent());
 }
 
 void KFileItemModelTest::testSetData()
@@ -233,7 +246,7 @@ void KFileItemModelTest::testSetData()
     values = m_model->data(0);
     QCOMPARE(values.value("customRole1").toString(), QString("Test1"));
     QCOMPARE(values.value("customRole2").toString(), QString("Test2"));
-    QVERIFY(isModelConsistent());
+    QVERIFY(m_model->isConsistent());
 }
 
 void KFileItemModelTest::testSetDataWithModifiedSortRole_data()
@@ -271,6 +284,8 @@ void KFileItemModelTest::testSetDataWithModifiedSortRole()
     // Changing the value of a sort-role must result in
     // a reordering of the items.
     QCOMPARE(m_model->sortRole(), QByteArray("text"));
+    m_model->setSortRole("rating");
+    QCOMPARE(m_model->sortRole(), QByteArray("rating"));
 
     QStringList files;
     files << "a.txt" << "b.txt" << "c.txt";
@@ -296,7 +311,6 @@ void KFileItemModelTest::testSetDataWithModifiedSortRole()
     ratingC.insert("rating", 6);
     m_model->setData(2, ratingC);
 
-    m_model->setSortRole("rating");
     QCOMPARE(m_model->data(0).value("rating").toInt(), 2);
     QCOMPARE(m_model->data(1).value("rating").toInt(), 4);
     QCOMPARE(m_model->data(2).value("rating").toInt(), 6);
@@ -314,7 +328,70 @@ void KFileItemModelTest::testSetDataWithModifiedSortRole()
     QCOMPARE(m_model->data(0).value("rating").toInt(), ratingIndex0);
     QCOMPARE(m_model->data(1).value("rating").toInt(), ratingIndex1);
     QCOMPARE(m_model->data(2).value("rating").toInt(), ratingIndex2);
-    QVERIFY(isModelConsistent());
+    QVERIFY(m_model->isConsistent());
+}
+
+void KFileItemModelTest::testChangeSortRole()
+{
+    QCOMPARE(m_model->sortRole(), QByteArray("text"));
+
+    QStringList files;
+    files << "a.txt" << "b.jpg" << "c.txt";
+    m_testDir->createFiles(files);
+
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "a.txt" << "b.jpg" << "c.txt");
+
+    // Simulate that KFileItemModelRolesUpdater determines the mime type.
+    // Resorting the files by 'type' will only work immediately if their
+    // mime types are known.
+    for (int index = 0; index < m_model->count(); ++index) {
+        m_model->fileItem(index).determineMimeType();
+    }
+
+    // Now: sort by type.
+    QSignalSpy spyItemsMoved(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)));
+    m_model->setSortRole("type");
+    QCOMPARE(m_model->sortRole(), QByteArray("type"));
+    QVERIFY(!spyItemsMoved.isEmpty());
+
+    // The actual order of the files might depend on the translation of the
+    // result of KFileItem::mimeComment() in the user's language.
+    QStringList version1;
+    version1 << "b.jpg" << "a.txt" << "c.txt";
+
+    QStringList version2;
+    version2 << "a.txt" << "c.txt" << "b.jpg";
+
+    const bool ok1 = (itemsInModel() == version1);
+    const bool ok2 = (itemsInModel() == version2);
+
+    QVERIFY(ok1 || ok2);
+}
+
+void KFileItemModelTest::testResortAfterChangingName()
+{
+    // We sort by size in a directory where all files have the same size.
+    // Therefore, the files are sorted by their names.
+    m_model->setSortRole("size");
+
+    QStringList files;
+    files << "a.txt" << "b.txt" << "c.txt";
+    m_testDir->createFiles(files);
+
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "a.txt" << "b.txt" << "c.txt");
+
+    // We rename a.txt to d.txt. Even though the size has not changed at all,
+    // the model must re-sort the items.
+    QHash<QByteArray, QVariant> data;
+    data.insert("text", "d.txt");
+    m_model->setData(0, data);
+
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "b.txt" << "c.txt" << "d.txt");
 }
 
 void KFileItemModelTest::testModelConsistencyWhenInsertingItems()
@@ -353,7 +430,7 @@ void KFileItemModelTest::testModelConsistencyWhenInsertingItems()
             QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
         }
 
-        QVERIFY(isModelConsistent());
+        QVERIFY(m_model->isConsistent());
     }
 
     QCOMPARE(m_model->count(), 201);
@@ -409,7 +486,8 @@ void KFileItemModelTest::testExpandItems()
     // KFileItemModel::expansionLevelsCompare(const KFileItem& a, const KFileItem& b)
     // yields the correct result for "a/a/1" and "a/a-1/", whis is non-trivial because they share the
     // first three characters.
-    QSet<QByteArray> modelRoles = m_model->roles();
+    QSet<QByteArray> originalModelRoles = m_model->roles();
+    QSet<QByteArray> modelRoles = originalModelRoles;
     modelRoles << "isExpanded" << "isExpandable" << "expandedParentsCount";
     m_model->setRoles(modelRoles);
 
@@ -487,6 +565,7 @@ void KFileItemModelTest::testExpandItems()
     QCOMPARE(spyRemoved.count(), 1);
     itemRangeList = spyRemoved.takeFirst().at(0).value<KItemRangeList>();
     QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(1, 4)); // 4 items removed
+    QVERIFY(m_model->isConsistent());
 
     // Clear the model, reload the folder and try to restore the expanded folders.
     m_model->clear();
@@ -503,6 +582,7 @@ void KFileItemModelTest::testExpandItems()
     QVERIFY(m_model->isExpanded(3));
     QVERIFY(!m_model->isExpanded(4));
     QCOMPARE(m_model->expandedDirectories(), allFolders);
+    QVERIFY(m_model->isConsistent());
 
     // Move to a sub folder, then call restoreExpandedFolders() *before* going back.
     // This is how DolphinView restores the expanded folders when navigating in history.
@@ -514,6 +594,18 @@ void KFileItemModelTest::testExpandItems()
     QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(directoryLoadingCompleted()), DefaultTimeout));
     QCOMPARE(m_model->count(), 5);  // 5 items: "a/", "a/a/", "a/a/1", "a/a-1/", "a/a-1/1"
     QCOMPARE(m_model->expandedDirectories(), allFolders);
+
+    // Remove all expanded items by changing the roles
+    spyRemoved.clear();
+    m_model->setRoles(originalModelRoles);
+    QVERIFY(!m_model->isExpanded(0));
+    QCOMPARE(m_model->count(), 1);
+    QVERIFY(!m_model->expandedDirectories().contains(KUrl(m_testDir->name() + 'a')));
+
+    QCOMPARE(spyRemoved.count(), 1);
+    itemRangeList = spyRemoved.takeFirst().at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(1, 4)); // 4 items removed
+    QVERIFY(m_model->isConsistent());
 }
 
 void KFileItemModelTest::testExpandParentItems()
@@ -565,6 +657,78 @@ void KFileItemModelTest::testExpandParentItems()
     QVERIFY(m_model->isExpanded(2));
     QVERIFY(m_model->isExpanded(3));
     QVERIFY(!m_model->isExpanded(4));
+    QVERIFY(m_model->isConsistent());
+
+    // Expand "a 1/b1/".
+    m_model->setExpanded(1, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(directoryLoadingCompleted()), DefaultTimeout));
+    QCOMPARE(m_model->count(), 6);
+    QVERIFY(m_model->isExpanded(0));
+    QVERIFY(m_model->isExpanded(1));
+    QVERIFY(!m_model->isExpanded(2));
+    QVERIFY(m_model->isExpanded(3));
+    QVERIFY(m_model->isExpanded(4));
+    QVERIFY(!m_model->isExpanded(5));
+    QVERIFY(m_model->isConsistent());
+
+    // Collapse "a 1/b1/" again, and verify that the previous state is restored.
+    m_model->setExpanded(1, false);
+    QCOMPARE(m_model->count(), 5);
+    QVERIFY(m_model->isExpanded(0));
+    QVERIFY(!m_model->isExpanded(1));
+    QVERIFY(m_model->isExpanded(2));
+    QVERIFY(m_model->isExpanded(3));
+    QVERIFY(!m_model->isExpanded(4));
+    QVERIFY(m_model->isConsistent());
+}
+
+/**
+ * Renaming an expanded folder by prepending its name with a dot makes it
+ * hidden. Verify that this does not cause an inconsistent model state and
+ * a crash later on, see https://bugs.kde.org/show_bug.cgi?id=311947
+ */
+void KFileItemModelTest::testMakeExpandedItemHidden()
+{
+    QSet<QByteArray> modelRoles = m_model->roles();
+    modelRoles << "isExpanded" << "isExpandable" << "expandedParentsCount";
+    m_model->setRoles(modelRoles);
+
+    QStringList files;
+    m_testDir->createFile("1a/2a/3a");
+    m_testDir->createFile("1a/2a/3b");
+    m_testDir->createFile("1a/2b");
+    m_testDir->createFile("1b");
+
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+
+    // So far, the model contains only "1a/" and "1b".
+    QCOMPARE(m_model->count(), 2);
+    m_model->setExpanded(0, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+
+    // Now "1a/2a" and "1a/2b" have appeared.
+    QCOMPARE(m_model->count(), 4);
+    m_model->setExpanded(1, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 6);
+
+    // Rename "1a/2" and make it hidden.
+    const QString oldPath = m_model->fileItem(0).url().path() + "/2a";
+    const QString newPath = m_model->fileItem(0).url().path() + "/.2a";
+
+    KIO::SimpleJob* job = KIO::rename(oldPath, newPath, KIO::HideProgressInfo);
+    bool ok = job->exec();
+    QVERIFY(ok);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsRemoved(KItemRangeList)), DefaultTimeout));
+
+    // "1a/2" and its subfolders have disappeared now.
+    QVERIFY(m_model->isConsistent());
+    QCOMPARE(m_model->count(), 3);
+
+    m_model->setExpanded(0, false);
+    QCOMPARE(m_model->count(), 2);
+
 }
 
 void KFileItemModelTest::testSorting()
@@ -616,7 +780,8 @@ void KFileItemModelTest::testSorting()
     QCOMPARE(m_model->sortOrder(), Qt::AscendingOrder);
     QCOMPARE(itemsInModel(), QStringList() << "a" << "b" << "c" << "c-1" << "c-2" << "c-3" << "d" << "e");
     QCOMPARE(spyItemsMoved.count(), 1);
-    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 2 << 4 << 5 << 3 << 0 << 1 << 6 << 7);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(0, 6));
+    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 2 << 4 << 5 << 3 << 0 << 1);
 
     // Sort by Name, descending
     m_model->setSortDirectoriesFirst(true);
@@ -625,8 +790,10 @@ void KFileItemModelTest::testSorting()
     QCOMPARE(m_model->sortOrder(), Qt::DescendingOrder);
     QCOMPARE(itemsInModel(), QStringList() << "c" << "c-2" << "c-3" << "c-1" << "e" << "d" << "b" << "a");
     QCOMPARE(spyItemsMoved.count(), 2);
-    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 4 << 5 << 0 << 3 << 1 << 2 << 6 << 7);
-    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 0 << 1 << 2 << 3 << 7 << 6 << 5 << 4);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(0, 6));
+    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 4 << 5 << 0 << 3 << 1 << 2);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(4, 4));
+    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 7 << 6 << 5 << 4);
 
     // Sort by Date, descending
     m_model->setSortDirectoriesFirst(true);
@@ -635,7 +802,8 @@ void KFileItemModelTest::testSorting()
     QCOMPARE(m_model->sortOrder(), Qt::DescendingOrder);
     QCOMPARE(itemsInModel(), QStringList() << "c" << "c-2" << "c-3" << "c-1" << "b" << "d" << "a" << "e");
     QCOMPARE(spyItemsMoved.count(), 1);
-    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 0 << 1 << 2 << 3 << 7 << 5 << 4 << 6);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(4, 4));
+    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 7 << 5 << 4 << 6);
 
     // Sort by Date, ascending
     m_model->setSortOrder(Qt::AscendingOrder);
@@ -643,7 +811,8 @@ void KFileItemModelTest::testSorting()
     QCOMPARE(m_model->sortOrder(), Qt::AscendingOrder);
     QCOMPARE(itemsInModel(), QStringList() << "c" << "c-2" << "c-3" << "c-1" << "e" << "a" << "d" << "b");
     QCOMPARE(spyItemsMoved.count(), 1);
-    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 0 << 1 << 2 << 3 << 7 << 6 << 5 << 4);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(4, 4));
+    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 7 << 6 << 5 << 4);
 
     // Sort by Date, ascending, 'Sort Folders First' disabled
     m_model->setSortDirectoriesFirst(false);
@@ -652,7 +821,8 @@ void KFileItemModelTest::testSorting()
     QVERIFY(!m_model->sortDirectoriesFirst());
     QCOMPARE(itemsInModel(), QStringList() << "e" << "a" << "c" << "c-1" << "c-2" << "c-3" << "d" << "b");
     QCOMPARE(spyItemsMoved.count(), 1);
-    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 2 << 4 << 5 << 3 << 0 << 1 << 6 << 7);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(0, 6));
+    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 2 << 4 << 5 << 3 << 0 << 1);
 
     // Sort by Name, ascending, 'Sort Folders First' disabled
     m_model->setSortRole("text");
@@ -660,6 +830,7 @@ void KFileItemModelTest::testSorting()
     QVERIFY(!m_model->sortDirectoriesFirst());
     QCOMPARE(itemsInModel(), QStringList() << "a" << "b" << "c" << "c-1" << "c-2" << "c-3" << "d" << "e");
     QCOMPARE(spyItemsMoved.count(), 1);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(0, 8));
     QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 7 << 0 << 2 << 3 << 4 << 5 << 6 << 1);
 
     // Sort by Size, ascending, 'Sort Folders First' disabled
@@ -669,19 +840,15 @@ void KFileItemModelTest::testSorting()
     QVERIFY(!m_model->sortDirectoriesFirst());
     QCOMPARE(itemsInModel(), QStringList() << "c" << "c-2" << "c-3" << "c-1" << "a" << "b" << "e" << "d");
     QCOMPARE(spyItemsMoved.count(), 1);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(0, 8));
     QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 4 << 5 << 0 << 3 << 1 << 2 << 7 << 6);
 
-    QSKIP("2 tests of testSorting() are temporary deactivated as in KFileItemModel resortAllItems() "
-          "always emits a itemsMoved() signal. Before adjusting the tests think about probably introducing "
-          "another signal", SkipSingle);
-    // Internal note: Check comment in KFileItemModel::resortAllItems() for details.
-
     // In 'Sort by Size' mode, folders are always first -> changing 'Sort Folders First' does not resort the model
     m_model->setSortDirectoriesFirst(true);
     QCOMPARE(m_model->sortRole(), QByteArray("size"));
     QCOMPARE(m_model->sortOrder(), Qt::AscendingOrder);
     QVERIFY(m_model->sortDirectoriesFirst());
-    QCOMPARE(itemsInModel(), QStringList() << "c" << "a" << "b" << "e" << "d");
+    QCOMPARE(itemsInModel(), QStringList() << "c" << "c-2" << "c-3" << "c-1" << "a" << "b" << "e" << "d");
     QCOMPARE(spyItemsMoved.count(), 0);
 
     // Sort by Size, descending, 'Sort Folders First' enabled
@@ -689,9 +856,10 @@ void KFileItemModelTest::testSorting()
     QCOMPARE(m_model->sortRole(), QByteArray("size"));
     QCOMPARE(m_model->sortOrder(), Qt::DescendingOrder);
     QVERIFY(m_model->sortDirectoriesFirst());
-    QCOMPARE(itemsInModel(), QStringList() << "c" << "d" << "e" << "b" << "a");
+    QCOMPARE(itemsInModel(), QStringList() << "c" << "c-2" << "c-3" << "c-1" << "d" << "e" << "b" << "a");
     QCOMPARE(spyItemsMoved.count(), 1);
-    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 0 << 4 << 3 << 2 << 1);
+    QCOMPARE(spyItemsMoved.first().at(0).value<KItemRange>(), KItemRange(4, 4));
+    QCOMPARE(spyItemsMoved.takeFirst().at(1).value<QList<int> >(), QList<int>() << 7 << 6 << 5 << 4);
 
     // TODO: Sort by other roles; show/hide hidden files
 }
@@ -774,27 +942,368 @@ void KFileItemModelTest::testNameFilter()
     QCOMPARE(m_model->count(), 5);
 }
 
-bool KFileItemModelTest::isModelConsistent() const
+/**
+ * Verifies that we do not crash when adding a KFileItem with an empty path.
+ * Before this issue was fixed, KFileItemModel::expandedParentsCountCompare()
+ * tried to always read the first character of the path, even if the path is empty.
+ */
+void KFileItemModelTest::testEmptyPath()
 {
-    if (m_model->m_items.count() != m_model->m_itemData.count()) {
-        return false;
-    }
+    QSet<QByteArray> roles;
+    roles.insert("text");
+    roles.insert("isExpanded");
+    roles.insert("isExpandable");
+    roles.insert("expandedParentsCount");
+    m_model->setRoles(roles);
 
-    for (int i = 0; i < m_model->count(); ++i) {
-        const KFileItem item = m_model->fileItem(i);
-        if (item.isNull()) {
-            qWarning() << "Item" << i << "is null";
-            return false;
-        }
+    const KUrl emptyUrl;
+    QVERIFY(emptyUrl.path().isEmpty());
 
-        const int itemIndex = m_model->index(item);
-        if (itemIndex != i) {
-            qWarning() << "Item" << i << "has a wrong index:" << itemIndex;
-            return false;
-        }
-    }
+    const KUrl url("file:///test/");
+
+    KFileItemList items;
+    items << KFileItem(emptyUrl, QString(), KFileItem::Unknown) << KFileItem(url, QString(), KFileItem::Unknown);
+    m_model->slotItemsAdded(emptyUrl, items);
+    m_model->slotCompleted();
+}
+
+/**
+ * Verifies that the 'isExpanded' state of folders does not change when the
+ * 'refreshItems' signal is received, see https://bugs.kde.org/show_bug.cgi?id=299675.
+ */
+void KFileItemModelTest::testRefreshExpandedItem()
+{
+    QSet<QByteArray> modelRoles = m_model->roles();
+    modelRoles << "isExpanded" << "isExpandable" << "expandedParentsCount";
+    m_model->setRoles(modelRoles);
+
+    QStringList files;
+    files << "a/1" << "a/2" << "3" << "4";
+    m_testDir->createFiles(files);
+
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 3); // "a/", "3", "4"
+
+    m_model->setExpanded(0, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 5); // "a/", "a/1", "a/2", "3", "4"
+    QVERIFY(m_model->isExpanded(0));
 
-    return true;
+    QSignalSpy spyItemsChanged(m_model, SIGNAL(itemsChanged(KItemRangeList,QSet<QByteArray>)));
+
+    const KFileItem item = m_model->fileItem(0);
+    m_model->slotRefreshItems(QList<QPair<KFileItem, KFileItem> >() << qMakePair(item, item));
+    QVERIFY(!spyItemsChanged.isEmpty());
+
+    QCOMPARE(m_model->count(), 5); // "a/", "a/1", "a/2", "3", "4"
+    QVERIFY(m_model->isExpanded(0));
+}
+
+/**
+ * Verify that removing hidden files and folders from the model does not
+ * result in a crash, see https://bugs.kde.org/show_bug.cgi?id=314046
+ */
+void KFileItemModelTest::testRemoveHiddenItems()
+{
+    m_testDir->createDir(".a");
+    m_testDir->createDir(".b");
+    m_testDir->createDir("c");
+    m_testDir->createDir("d");
+    m_testDir->createFiles(QStringList() << ".f" << ".g" << "h" << "i");
+
+    QSignalSpy spyItemsInserted(m_model, SIGNAL(itemsInserted(KItemRangeList)));
+    QSignalSpy spyItemsRemoved(m_model, SIGNAL(itemsRemoved(KItemRangeList)));
+
+    m_model->setShowHiddenFiles(true);
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << ".a" << ".b" << "c" << "d" <<".f" << ".g" << "h" << "i");
+    QCOMPARE(spyItemsInserted.count(), 1);
+    QCOMPARE(spyItemsRemoved.count(), 0);
+    KItemRangeList itemRangeList = spyItemsInserted.takeFirst().at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(0, 8));
+
+    m_model->setShowHiddenFiles(false);
+    QCOMPARE(itemsInModel(), QStringList() << "c" << "d" << "h" << "i");
+    QCOMPARE(spyItemsInserted.count(), 0);
+    QCOMPARE(spyItemsRemoved.count(), 1);
+    itemRangeList = spyItemsRemoved.takeFirst().at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(0, 2) << KItemRange(4, 2));
+
+    m_model->setShowHiddenFiles(true);
+    QCOMPARE(itemsInModel(), QStringList() << ".a" << ".b" << "c" << "d" <<".f" << ".g" << "h" << "i");
+    QCOMPARE(spyItemsInserted.count(), 1);
+    QCOMPARE(spyItemsRemoved.count(), 0);
+    itemRangeList = spyItemsInserted.takeFirst().at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(0, 2) << KItemRange(2, 2));
+
+    m_model->clear();
+    QCOMPARE(itemsInModel(), QStringList());
+    QCOMPARE(spyItemsInserted.count(), 0);
+    QCOMPARE(spyItemsRemoved.count(), 1);
+    itemRangeList = spyItemsRemoved.takeFirst().at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(0, 8));
+
+    // Hiding hidden files makes the dir lister emit its itemsDeleted signal.
+    // Verify that this does not make the model crash.
+    m_model->setShowHiddenFiles(false);
+}
+
+/**
+ * Verify that filtered items are removed when their parent is collapsed.
+ */
+void KFileItemModelTest::collapseParentOfHiddenItems()
+{
+    QSet<QByteArray> modelRoles = m_model->roles();
+    modelRoles << "isExpanded" << "isExpandable" << "expandedParentsCount";
+    m_model->setRoles(modelRoles);
+
+    QStringList files;
+    files << "a/1" << "a/b/1" << "a/b/c/1" << "a/b/c/d/1";
+    m_testDir->createFiles(files);
+
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 1); // Only "a/"
+
+    // Expand "a/".
+    m_model->setExpanded(0, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 3); // 3 items: "a/", "a/b/", "a/1"
+
+    // Expand "a/b/".
+    m_model->setExpanded(1, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 5); // 5 items: "a/", "a/b/", "a/b/c", "a/b/1", "a/1"
+
+    // Expand "a/b/c/".
+    m_model->setExpanded(2, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 7); // 7 items: "a/", "a/b/", "a/b/c", "a/b/c/d/", "a/b/c/1", "a/b/1", "a/1"
+
+    // Set a name filter that matches nothing -> only the expanded folders remain.
+    m_model->setNameFilter("xyz");
+    QCOMPARE(m_model->count(), 3);
+    QCOMPARE(itemsInModel(), QStringList() << "a" << "b" << "c");
+
+    // Collapse the folder "a/".
+    QSignalSpy spyItemsRemoved(m_model, SIGNAL(itemsRemoved(KItemRangeList)));
+    m_model->setExpanded(0, false);
+    QCOMPARE(spyItemsRemoved.count(), 1);
+    QCOMPARE(m_model->count(), 1);
+    QCOMPARE(itemsInModel(), QStringList() << "a");
+
+    // Remove the filter -> no files should appear (and we should not get a crash).
+    m_model->setNameFilter(QString());
+    QCOMPARE(m_model->count(), 1);
+}
+
+/**
+ * Verify that filtered items are removed when their parent is deleted.
+ */
+void KFileItemModelTest::removeParentOfHiddenItems()
+{
+    QSet<QByteArray> modelRoles = m_model->roles();
+    modelRoles << "isExpanded" << "isExpandable" << "expandedParentsCount";
+    m_model->setRoles(modelRoles);
+
+    QStringList files;
+    files << "a/1" << "a/b/1" << "a/b/c/1" << "a/b/c/d/1";
+    m_testDir->createFiles(files);
+
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 1); // Only "a/"
+
+    // Expand "a/".
+    m_model->setExpanded(0, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 3); // 3 items: "a/", "a/b/", "a/1"
+
+    // Expand "a/b/".
+    m_model->setExpanded(1, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 5); // 5 items: "a/", "a/b/", "a/b/c", "a/b/1", "a/1"
+
+    // Expand "a/b/c/".
+    m_model->setExpanded(2, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(m_model->count(), 7); // 7 items: "a/", "a/b/", "a/b/c", "a/b/c/d/", "a/b/c/1", "a/b/1", "a/1"
+
+    // Set a name filter that matches nothing -> only the expanded folders remain.
+    m_model->setNameFilter("xyz");
+    QCOMPARE(m_model->count(), 3);
+    QCOMPARE(itemsInModel(), QStringList() << "a" << "b" << "c");
+
+    // Simulate the deletion of the directory "a/b/".
+    QSignalSpy spyItemsRemoved(m_model, SIGNAL(itemsRemoved(KItemRangeList)));
+    m_model->slotItemsDeleted(KFileItemList() << m_model->fileItem(1));
+    QCOMPARE(spyItemsRemoved.count(), 1);
+    QCOMPARE(m_model->count(), 1);
+    QCOMPARE(itemsInModel(), QStringList() << "a");
+
+    // Remove the filter -> only the file "a/1" should appear.
+    m_model->setNameFilter(QString());
+    QCOMPARE(m_model->count(), 2);
+    QCOMPARE(itemsInModel(), QStringList() << "a" << "1");
+}
+
+/**
+ * Create a tree structure where parent-child relationships can not be
+ * determined by parsing the URLs, and verify that KFileItemModel
+ * handles them correctly.
+ */
+void KFileItemModelTest::testGeneralParentChildRelationships()
+{
+    QSet<QByteArray> modelRoles = m_model->roles();
+    modelRoles << "isExpanded" << "isExpandable" << "expandedParentsCount";
+    m_model->setRoles(modelRoles);
+
+    QStringList files;
+    files << "parent1/realChild1/realGrandChild1" << "parent2/realChild2/realGrandChild2";
+    m_testDir->createFiles(files);
+
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "parent2");
+
+    // Expand all folders.
+    m_model->setExpanded(0, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "parent2");
+
+    m_model->setExpanded(1, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "realGrandChild1" << "parent2");
+
+    m_model->setExpanded(3, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "realGrandChild1" << "parent2" << "realChild2");
+
+    m_model->setExpanded(4, true);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "realGrandChild1" << "parent2" << "realChild2" << "realGrandChild2");
+
+    // Add some more children and grand-children.
+    const KUrl parent1 = m_model->fileItem(0).url();
+    const KUrl parent2 = m_model->fileItem(3).url();
+    const KUrl realChild1 = m_model->fileItem(1).url();
+    const KUrl realChild2 = m_model->fileItem(4).url();
+
+    m_model->slotItemsAdded(parent1, KFileItemList() << KFileItem(KUrl("child1"), QString(), KFileItem::Unknown));
+    m_model->slotCompleted();
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "realGrandChild1" << "child1" << "parent2" << "realChild2" << "realGrandChild2");
+
+    m_model->slotItemsAdded(parent2, KFileItemList() << KFileItem(KUrl("child2"), QString(), KFileItem::Unknown));
+    m_model->slotCompleted();
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "realGrandChild1" << "child1" << "parent2" << "realChild2" << "realGrandChild2" << "child2");
+
+    m_model->slotItemsAdded(realChild1, KFileItemList() << KFileItem(KUrl("grandChild1"), QString(), KFileItem::Unknown));
+    m_model->slotCompleted();
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "grandChild1" << "realGrandChild1" << "child1" << "parent2" << "realChild2" << "realGrandChild2" << "child2");
+
+    m_model->slotItemsAdded(realChild1, KFileItemList() << KFileItem(KUrl("grandChild1"), QString(), KFileItem::Unknown));
+    m_model->slotCompleted();
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "grandChild1" << "realGrandChild1" << "child1" << "parent2" << "realChild2" << "realGrandChild2" << "child2");
+
+    m_model->slotItemsAdded(realChild2, KFileItemList() << KFileItem(KUrl("grandChild2"), QString(), KFileItem::Unknown));
+    m_model->slotCompleted();
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "grandChild1" << "realGrandChild1" << "child1" << "parent2" << "realChild2" << "grandChild2" << "realGrandChild2" << "child2");
+
+    // Set a name filter that matches nothing -> only expanded folders remain.
+    QSignalSpy itemsRemovedSpy(m_model, SIGNAL(itemsRemoved(KItemRangeList)));
+    m_model->setNameFilter("xyz");
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "realChild1" << "parent2" << "realChild2");
+    QCOMPARE(itemsRemovedSpy.count(), 1);
+    QList<QVariant> arguments = itemsRemovedSpy.takeFirst();
+    KItemRangeList itemRangeList = arguments.at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(2, 3) << KItemRange(7, 3));
+
+    // Collapse "parent1".
+    m_model->setExpanded(0, false);
+    QCOMPARE(itemsInModel(), QStringList() << "parent1" << "parent2" << "realChild2");
+    QCOMPARE(itemsRemovedSpy.count(), 1);
+    arguments = itemsRemovedSpy.takeFirst();
+    itemRangeList = arguments.at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(1, 1));
+
+    // Remove "parent2".
+    m_model->slotItemsDeleted(KFileItemList() << m_model->fileItem(1));
+    QCOMPARE(itemsInModel(), QStringList() << "parent1");
+    QCOMPARE(itemsRemovedSpy.count(), 1);
+    arguments = itemsRemovedSpy.takeFirst();
+    itemRangeList = arguments.at(0).value<KItemRangeList>();
+    QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(1, 2));
+
+    // Clear filter, verify that no items reappear.
+    m_model->setNameFilter(QString());
+    QCOMPARE(itemsInModel(), QStringList() << "parent1");
+}
+
+void KFileItemModelTest::testNameRoleGroups()
+{
+    QStringList files;
+    files << "b.txt" << "c.txt" << "d.txt" << "e.txt";
+
+    m_testDir->createFiles(files);
+
+    m_model->setGroupedSorting(true);
+    m_model->loadDirectory(m_testDir->url());
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsInserted(KItemRangeList)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "b.txt" << "c.txt" << "d.txt" << "e.txt");
+
+    QList<QPair<int, QVariant> > expectedGroups;
+    expectedGroups << QPair<int, QVariant>(0, QLatin1String("B"));
+    expectedGroups << QPair<int, QVariant>(1, QLatin1String("C"));
+    expectedGroups << QPair<int, QVariant>(2, QLatin1String("D"));
+    expectedGroups << QPair<int, QVariant>(3, QLatin1String("E"));
+    QCOMPARE(m_model->groups(), expectedGroups);
+
+    // Rename d.txt to a.txt.
+    QHash<QByteArray, QVariant> data;
+    data.insert("text", "a.txt");
+    m_model->setData(2, data);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(itemsMoved(KItemRange,QList<int>)), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "a.txt" << "b.txt" << "c.txt" << "e.txt");
+
+    expectedGroups.clear();
+    expectedGroups << QPair<int, QVariant>(0, QLatin1String("A"));
+    expectedGroups << QPair<int, QVariant>(1, QLatin1String("B"));
+    expectedGroups << QPair<int, QVariant>(2, QLatin1String("C"));
+    expectedGroups << QPair<int, QVariant>(3, QLatin1String("E"));
+    QCOMPARE(m_model->groups(), expectedGroups);
+
+    // Rename c.txt to d.txt.
+    data.insert("text", "d.txt");
+    m_model->setData(2, data);
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(groupsChanged()), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "a.txt" << "b.txt" << "d.txt" << "e.txt");
+
+    expectedGroups.clear();
+    expectedGroups << QPair<int, QVariant>(0, QLatin1String("A"));
+    expectedGroups << QPair<int, QVariant>(1, QLatin1String("B"));
+    expectedGroups << QPair<int, QVariant>(2, QLatin1String("D"));
+    expectedGroups << QPair<int, QVariant>(3, QLatin1String("E"));
+    QCOMPARE(m_model->groups(), expectedGroups);
+
+    // Change d.txt back to c.txt, but this time using the dir lister's refreshItems() signal.
+    const KFileItem fileItemD = m_model->fileItem(2);
+    KFileItem fileItemC = fileItemD;
+    KUrl urlC = fileItemC.url();
+    urlC.setFileName("c.txt");
+    fileItemC.setUrl(urlC);
+
+    m_model->slotRefreshItems(QList<QPair<KFileItem, KFileItem> >() << qMakePair(fileItemD, fileItemC));
+    QVERIFY(QTest::kWaitForSignal(m_model, SIGNAL(groupsChanged()), DefaultTimeout));
+    QCOMPARE(itemsInModel(), QStringList() << "a.txt" << "b.txt" << "c.txt" << "e.txt");
+
+    expectedGroups.clear();
+    expectedGroups << QPair<int, QVariant>(0, QLatin1String("A"));
+    expectedGroups << QPair<int, QVariant>(1, QLatin1String("B"));
+    expectedGroups << QPair<int, QVariant>(2, QLatin1String("C"));
+    expectedGroups << QPair<int, QVariant>(3, QLatin1String("E"));
+    QCOMPARE(m_model->groups(), expectedGroups);
 }
 
 QStringList KFileItemModelTest::itemsInModel() const