From 8c96641f222875642cf7ba8d4ef6cfcb1bbe80f3 Mon Sep 17 00:00:00 2001
From: Stephen Kelly <ske@ableton.com>
Date: Wed, 3 Feb 2016 11:28:38 +0100
Subject: [PATCH] KModelIndexProxyMapper: Add some asserts

---
 src/kmodelindexproxymapper.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/kmodelindexproxymapper.cpp b/src/kmodelindexproxymapper.cpp
index ae9e69a..3249029 100644
--- a/src/kmodelindexproxymapper.cpp
+++ b/src/kmodelindexproxymapper.cpp
@@ -228,7 +228,10 @@ QItemSelection KModelIndexProxyMapper::mapSelectionLeftToRight(const QItemSelect
         if (!proxy) {
             return QItemSelection();
         }
+
+        Q_ASSERT(seekSelection.isEmpty() || seekSelection.first().model() == proxy);
         seekSelection = proxy->mapSelectionToSource(seekSelection);
+        Q_ASSERT(seekSelection.isEmpty() || seekSelection.first().model() == proxy->sourceModel());
 
 #ifdef RANGE_FIX_HACK
         seekSelection = removeInvalidRanges(seekSelection);
@@ -243,7 +246,9 @@ QItemSelection KModelIndexProxyMapper::mapSelectionLeftToRight(const QItemSelect
         if (!proxy) {
             return QItemSelection();
         }
+        Q_ASSERT(seekSelection.isEmpty() || seekSelection.first().model() == proxy->sourceModel());
         seekSelection = proxy->mapSelectionFromSource(seekSelection);
+        Q_ASSERT(seekSelection.isEmpty() || seekSelection.first().model() == proxy);
 
 #ifdef RANGE_FIX_HACK
         seekSelection = removeInvalidRanges(seekSelection);