From 3d7e926c946ef9b50dc9439e49e87f8a74c4404d Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Sun, 30 Oct 2022 23:12:30 +0100
Subject: [PATCH] autotests/drm: add autotest for common modes

---
 autotests/drm/drmTest.cpp | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/autotests/drm/drmTest.cpp b/autotests/drm/drmTest.cpp
index ec23185865..eb20abdf21 100644
--- a/autotests/drm/drmTest.cpp
+++ b/autotests/drm/drmTest.cpp
@@ -35,6 +35,7 @@ private Q_SLOTS:
     void testAmsDetection();
     void testOutputDetection();
     void testZeroModesHandling();
+    void testModeGeneration();
 };
 
 static void verifyCleanup(MockGpu *mockGpu)
@@ -158,5 +159,34 @@ void DrmTest::testZeroModesHandling()
     verifyCleanup(mockGpu.get());
 }
 
+void DrmTest::testModeGeneration()
+{
+    const auto mockGpu = std::make_unique<MockGpu>(1, 5);
+
+    const auto conn = std::make_shared<MockConnector>(mockGpu.get());
+    mockGpu->connectors.push_back(conn);
+
+    const auto session = Session::create(Session::Type::Noop);
+    const auto backend = std::make_unique<DrmBackend>(session.get());
+    const auto renderBackend = backend->createQPainterBackend();
+    auto gpu = std::make_unique<DrmGpu>(backend.get(), "test", 1, 0);
+
+    conn->modes.clear();
+    conn->addMode(3840, 2160, 60);
+    QVERIFY(gpu->updateOutputs());
+    QCOMPARE(gpu->drmOutputs().size(), 1);
+
+    DrmOutput *const output = gpu->drmOutputs().front();
+    QCOMPARE(output->modes().size(), 14);
+    for (const auto &mode : output->modes()) {
+        QVERIFY(mode->size().width() <= 3840);
+        QVERIFY(mode->size().height() <= 2160);
+        QVERIFY(mode->refreshRate() <= 60000);
+    }
+
+    gpu.reset();
+    verifyCleanup(mockGpu.get());
+}
+
 QTEST_GUILESS_MAIN(DrmTest)
 #include "drmTest.moc"