diff --git a/autotests/integration/dont_crash_aurorae_destroy_deco.cpp b/autotests/integration/dont_crash_aurorae_destroy_deco.cpp
index 647a50a837..541d63c369 100644
--- a/autotests/integration/dont_crash_aurorae_destroy_deco.cpp
+++ b/autotests/integration/dont_crash_aurorae_destroy_deco.cpp
@@ -8,10 +8,7 @@
 */
 #include "kwin_wayland_test.h"
 
-#include "composite.h"
 #include "core/output.h"
-#include "core/renderbackend.h"
-#include "libkwineffects/kwineffects.h"
 #include "pointer_input.h"
 #include "wayland_server.h"
 #include "workspace.h"
@@ -66,8 +63,6 @@ void DontCrashAuroraeDestroyDecoTest::initTestCase()
     QCOMPARE(outputs[0]->geometry(), QRect(0, 0, 1280, 1024));
     QCOMPARE(outputs[1]->geometry(), QRect(1280, 0, 1280, 1024));
     setenv("QT_QPA_PLATFORM", "wayland", true);
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void DontCrashAuroraeDestroyDecoTest::init()
diff --git a/autotests/integration/dont_crash_empty_deco.cpp b/autotests/integration/dont_crash_empty_deco.cpp
index bc00cbc04d..05acf536f2 100644
--- a/autotests/integration/dont_crash_empty_deco.cpp
+++ b/autotests/integration/dont_crash_empty_deco.cpp
@@ -8,10 +8,7 @@
 */
 #include "kwin_wayland_test.h"
 
-#include "composite.h"
 #include "core/output.h"
-#include "core/renderbackend.h"
-#include "libkwineffects/kwineffects.h"
 #include "pointer_input.h"
 #include "wayland_server.h"
 #include "workspace.h"
@@ -58,8 +55,6 @@ void DontCrashEmptyDecorationTest::initTestCase()
     QCOMPARE(outputs[0]->geometry(), QRect(0, 0, 1280, 1024));
     QCOMPARE(outputs[1]->geometry(), QRect(1280, 0, 1280, 1024));
     setenv("QT_QPA_PLATFORM", "wayland", true);
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void DontCrashEmptyDecorationTest::init()
diff --git a/autotests/integration/dont_crash_reinitialize_compositor.cpp b/autotests/integration/dont_crash_reinitialize_compositor.cpp
index 1584a35a65..d56bd4d18d 100644
--- a/autotests/integration/dont_crash_reinitialize_compositor.cpp
+++ b/autotests/integration/dont_crash_reinitialize_compositor.cpp
@@ -11,7 +11,6 @@
 
 #include "composite.h"
 #include "core/output.h"
-#include "core/renderbackend.h"
 #include "effectloader.h"
 #include "effects.h"
 #include "wayland_server.h"
@@ -72,8 +71,6 @@ void DontCrashReinitializeCompositorTest::initTestCase()
     QCOMPARE(outputs.count(), 2);
     QCOMPARE(outputs[0]->geometry(), QRect(0, 0, 1280, 1024));
     QCOMPARE(outputs[1]->geometry(), QRect(1280, 0, 1280, 1024));
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void DontCrashReinitializeCompositorTest::init()
diff --git a/autotests/integration/effects/desktop_switching_animation_test.cpp b/autotests/integration/effects/desktop_switching_animation_test.cpp
index cad4737934..56964fbc3d 100644
--- a/autotests/integration/effects/desktop_switching_animation_test.cpp
+++ b/autotests/integration/effects/desktop_switching_animation_test.cpp
@@ -9,8 +9,6 @@
 
 #include "kwin_wayland_test.h"
 
-#include "composite.h"
-#include "core/renderbackend.h"
 #include "effectloader.h"
 #include "effects.h"
 #include "virtualdesktops.h"
@@ -67,8 +65,6 @@ void DesktopSwitchingAnimationTest::initTestCase()
 
     kwinApp()->start();
     QVERIFY(applicationStartedSpy.wait());
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void DesktopSwitchingAnimationTest::init()
diff --git a/autotests/integration/effects/minimize_animation_test.cpp b/autotests/integration/effects/minimize_animation_test.cpp
index 0be5914820..76d575bdda 100644
--- a/autotests/integration/effects/minimize_animation_test.cpp
+++ b/autotests/integration/effects/minimize_animation_test.cpp
@@ -9,8 +9,6 @@
 
 #include "kwin_wayland_test.h"
 
-#include "composite.h"
-#include "core/renderbackend.h"
 #include "effectloader.h"
 #include "effects.h"
 #include "wayland_server.h"
@@ -67,8 +65,6 @@ void MinimizeAnimationTest::initTestCase()
 
     kwinApp()->start();
     QVERIFY(applicationStartedSpy.wait());
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void MinimizeAnimationTest::init()
diff --git a/autotests/integration/effects/scripted_effects_test.cpp b/autotests/integration/effects/scripted_effects_test.cpp
index b084d85933..37487ad8d5 100644
--- a/autotests/integration/effects/scripted_effects_test.cpp
+++ b/autotests/integration/effects/scripted_effects_test.cpp
@@ -9,9 +9,6 @@
 
 #include "kwin_wayland_test.h"
 
-#include "composite.h"
-#include "core/renderbackend.h"
-#include "cursor.h"
 #include "effectloader.h"
 #include "effects.h"
 #include "libkwineffects/anidata_p.h"
@@ -149,9 +146,6 @@ void ScriptedEffectsTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
     QVERIFY(applicationStartedSpy.wait());
-    QVERIFY(Compositor::self());
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 
     KWin::VirtualDesktopManager::self()->setCount(2);
 }
diff --git a/autotests/integration/effects/slidingpopups_test.cpp b/autotests/integration/effects/slidingpopups_test.cpp
index b57997e2e5..26d5e4b3e9 100644
--- a/autotests/integration/effects/slidingpopups_test.cpp
+++ b/autotests/integration/effects/slidingpopups_test.cpp
@@ -6,9 +6,6 @@
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
-#include "composite.h"
-#include "core/renderbackend.h"
-#include "cursor.h"
 #include "effectloader.h"
 #include "effects.h"
 #include "kwin_wayland_test.h"
@@ -78,9 +75,6 @@ void SlidingPopupsTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
     QVERIFY(applicationStartedSpy.wait());
-    QVERIFY(Compositor::self());
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void SlidingPopupsTest::init()
diff --git a/autotests/integration/effects/toplevel_open_close_animation_test.cpp b/autotests/integration/effects/toplevel_open_close_animation_test.cpp
index e71ebbbabf..932c0c9e30 100644
--- a/autotests/integration/effects/toplevel_open_close_animation_test.cpp
+++ b/autotests/integration/effects/toplevel_open_close_animation_test.cpp
@@ -9,8 +9,6 @@
 
 #include "kwin_wayland_test.h"
 
-#include "composite.h"
-#include "core/renderbackend.h"
 #include "effectloader.h"
 #include "effects.h"
 #include "wayland_server.h"
@@ -68,8 +66,6 @@ void ToplevelOpenCloseAnimationTest::initTestCase()
 
     kwinApp()->start();
     QVERIFY(applicationStartedSpy.wait());
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void ToplevelOpenCloseAnimationTest::init()
diff --git a/autotests/integration/effects/wobbly_shade_test.cpp b/autotests/integration/effects/wobbly_shade_test.cpp
index d6be0dcfe3..7db2571b03 100644
--- a/autotests/integration/effects/wobbly_shade_test.cpp
+++ b/autotests/integration/effects/wobbly_shade_test.cpp
@@ -8,8 +8,6 @@
 */
 #include "kwin_wayland_test.h"
 
-#include "composite.h"
-#include "core/renderbackend.h"
 #include "cursor.h"
 #include "effectloader.h"
 #include "effects.h"
@@ -71,9 +69,6 @@ void WobblyWindowsShadeTest::initTestCase()
     qputenv("KWIN_EFFECTS_FORCE_ANIMATIONS", "1");
     kwinApp()->start();
     QVERIFY(applicationStartedSpy.wait());
-    QVERIFY(Compositor::self());
-
-    QCOMPARE(Compositor::self()->backend()->compositingType(), KWin::OpenGLCompositing);
 }
 
 void WobblyWindowsShadeTest::init()