From 052d8680dc9172870f1c646586ab0bf971c5ba6a Mon Sep 17 00:00:00 2001
From: Sergio Martins <sergio.martins@kdab.com>
Date: Wed, 13 Oct 2021 15:37:02 +0100
Subject: [PATCH] Add a test for #186

Was hard to reproduce, doesn't happen with many other layouts
---
 tests/tst_docks.cpp | 26 ++++++++++++++++++++++++++
 tests/tst_docks.h   |  1 +
 2 files changed, 27 insertions(+)

diff --git a/tests/tst_docks.cpp b/tests/tst_docks.cpp
index c61a419d..6e4cb0ed 100644
--- a/tests/tst_docks.cpp
+++ b/tests/tst_docks.cpp
@@ -7327,6 +7327,32 @@ void TestDocks::tst_toggleTabbed2()
     QCOMPARE(frame1->title(), "dock1");
 }
 
+void TestDocks::tst_resizePropagatesEvenly()
+{
+    // For github issue #186
+    // Usually resizing main window will resize dock widgets evenly, but if you resize multiple
+    // times then one dock widget is getting too small. Not repro with all layouts, but the following
+    // one reproduced it:
+
+    auto m = createMainWindow(QSize(1000, 1000), MainWindowOption_None);
+    auto dock0 = createDockWidget("dock0", new MyWidget2());
+    auto dock1 = createDockWidget("dock1", new MyWidget2());
+    auto dock2 = createDockWidget("dock2", new MyWidget2());
+
+    m->addDockWidget(dock1, Location_OnLeft);
+    m->addDockWidget(dock2, Location_OnTop, dock1);
+    m->addDockWidget(dock0, Location_OnRight);
+
+    QVERIFY(qAbs(dock2->height() - dock1->height()) < 2);
+
+    m->resize(m->size() + QSize(0, 500));
+    for (int i = 1; i < 10; ++i)
+        m->resize(m->size() - QSize(0, i));
+
+    QEXPECT_FAIL("", "Will fix", Continue);
+    QVERIFY(qAbs(dock2->height() - dock1->height()) < 2);
+}
+
 void TestDocks::tst_addMDIDockWidget()
 {
     EnsureTopLevelsDeleted e;
diff --git a/tests/tst_docks.h b/tests/tst_docks.h
index 55bd47e5..02451501 100644
--- a/tests/tst_docks.h
+++ b/tests/tst_docks.h
@@ -240,6 +240,7 @@ private Q_SLOTS:
     void tst_redocksToPreviousTabIndex();
     void tst_toggleTabbed();
     void tst_toggleTabbed2();
+    void tst_resizePropagatesEvenly();
 
     void tst_addMDIDockWidget();
     void tst_redockToMDIRestoresPosition();