Create utility method for moving entries from one group to another

This will become especially useful when moving state data from the config file
to a dedicated state data file.

Task: https://phabricator.kde.org/T12549

2 files changed, 43 insertions, 0 deletions

diff --git a/autotests/kconfigtest.cpp b/autotests/kconfigtest.cpp
index c3a68e42..00e7bbf0 100644
--- a/autotests/kconfigtest.cpp
+++ b/autotests/kconfigtest.cpp
@@ -1898,6 +1898,47 @@ void KConfigTest::testNewlines()
 #endif
 }
 
+void KConfigTest::testMoveValuesTo()
+{
+    QTemporaryFile file;
+    QVERIFY(file.open());
+    // Prepare kdeglobals
+    {
+        KConfig glob(QStringLiteral("kdeglobals"));
+        KConfigGroup general(&glob, "TestGroup");
+        general.writeEntry("GlobalKey", "PlsDeleteMe");
+        QVERIFY(glob.sync());
+    }
+
+    KConfigGroup grp = KSharedConfig::openConfig(file.fileName())->group("TestGroup");
+
+    grp.writeEntry("test1", "first_value");
+    grp.writeEntry("test_empty", "");
+    grp.writeEntry("other", "other_value");
+    grp.writePathEntry("my_path", QStringLiteral("~/somepath"));
+    // because this key is from the global file it should be explicitly deleted
+    grp.deleteEntry("GlobalKey");
+
+    QTemporaryFile targetFile;
+    QVERIFY(targetFile.open());
+    targetFile.close();
+    KConfigGroup targetGroup = KSharedConfig::openConfig(targetFile.fileName(), KConfig::SimpleConfig)->group("MoveToGroup");
+
+    grp.moveValuesTo({"test1", "test_empty", "does_not_exist", "my_path", "GlobalKey"}, targetGroup);
+    QVERIFY(grp.config()->isDirty());
+    QVERIFY(targetGroup.config()->isDirty());
+
+    QCOMPARE(grp.keyList(), QStringList{QStringLiteral("other")});
+    QStringList expectedKeyList{QStringLiteral("my_path"), QStringLiteral("test1"), QStringLiteral("test_empty")};
+    QCOMPARE(targetGroup.keyList(), expectedKeyList);
+    QCOMPARE(targetGroup.readEntry("test1"), QStringLiteral("first_value"));
+
+    targetGroup.sync();
+    QFile targetReadFile(targetFile.fileName());
+    targetReadFile.open(QFile::ReadOnly);
+    QVERIFY(targetReadFile.readAll().contains(QByteArray("my_path[$e]=~/somepath")));
+}
+
 void KConfigTest::testXdgListEntry()
 {
     QTemporaryFile file;
diff --git a/autotests/kconfigtest.h b/autotests/kconfigtest.h
index 9d519eda..f716bd70 100644
--- a/autotests/kconfigtest.h
+++ b/autotests/kconfigtest.h
@@ -64,6 +64,8 @@ private Q_SLOTS:
     void testQStringUtf8_data();
     void testQStringUtf8();
 
+    void testMoveValuesTo();
+
     void testSubGroup();
     void testAddConfigSources();
     void testWriteOnSync();