[v2,1/1] support/testing: add python-pyqt5 test

diff --git a/DEVELOPERS b/DEVELOPERS
index a6364cdd441..1bf737842a2 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1844,6 +1844,8 @@  F:	support/testing/tests/package/test_python_magic_wormhole.py
 F:	support/testing/tests/package/test_python_midiutil.py
 F:	support/testing/tests/package/test_python_ml_dtypes.py
 F:	support/testing/tests/package/test_python_pyalsa.py
+F:	support/testing/tests/package/test_python_pyqt5.py
+F:	support/testing/tests/package/test_python_pyqt5/
 F:	support/testing/tests/package/test_python_spake2.py
 F:	support/testing/tests/package/test_rdma_core.py
 F:	support/testing/tests/package/test_rdma_core/
diff --git a/support/testing/tests/package/test_python_pyqt5.py b/support/testing/tests/package/test_python_pyqt5.py
new file mode 100644
index 00000000000..5f1952b5590
--- /dev/null
+++ b/support/testing/tests/package/test_python_pyqt5.py
@@ -0,0 +1,79 @@ 
+import os
+
+import infra.basetest
+
+
+class TestPythonPyQt5(infra.basetest.BRTest):
+    # We use a specific configuration for:
+    # - using Aarch64, to have more than 256MB memory,
+    # - using a kernel config fragment, to enable VKMS,
+    # - to have an ext4 rootfs image exposed as a virtio storage
+    #   (rather than cpio initrd). This will save some memory, as the
+    #   rootfs image is big.
+    kernel_fragment = \
+        infra.filepath("tests/package/test_python_pyqt5/linux-vkms.fragment")
+    rootfs_overlay = \
+        infra.filepath("tests/package/test_python_pyqt5/rootfs-overlay")
+    config = \
+        f"""
+        BR2_aarch64=y
+        BR2_TOOLCHAIN_EXTERNAL=y
+        BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
+        BR2_LINUX_KERNEL=y
+        BR2_LINUX_KERNEL_CUSTOM_VERSION=y
+        BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.1.81"
+        BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
+        BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config"
+        BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="{kernel_fragment}"
+        BR2_PACKAGE_DEJAVU=y
+        BR2_PACKAGE_LIBDRM=y
+        BR2_PACKAGE_MESA3D=y
+        BR2_PACKAGE_MESA3D_GALLIUM_DRIVER_SWRAST=y
+        BR2_PACKAGE_MESA3D_LLVM=y
+        BR2_PACKAGE_MESA3D_OPENGL_EGL=y
+        BR2_PACKAGE_MESA3D_OPENGL_ES=y
+        BR2_PACKAGE_PYTHON3=y
+        BR2_PACKAGE_PYTHON_PYQT5=y
+        BR2_PACKAGE_QT5=y
+        BR2_PACKAGE_QT5BASE_EGLFS=y
+        BR2_PACKAGE_QT5BASE_FONTCONFIG=y
+        BR2_PACKAGE_QT5BASE_WIDGETS=y
+        BR2_ROOTFS_OVERLAY="{rootfs_overlay}"
+        BR2_TARGET_ROOTFS_EXT2=y
+        BR2_TARGET_ROOTFS_EXT2_4=y
+        BR2_TARGET_ROOTFS_EXT2_SIZE="256M"
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def test_run(self):
+        drive = os.path.join(self.builddir, "images", "rootfs.ext4")
+        kern = os.path.join(self.builddir, "images", "Image")
+        self.emulator.boot(arch="aarch64",
+                           kernel=kern,
+                           kernel_cmdline=["root=/dev/vda console=ttyAMA0"],
+                           options=["-M", "virt", "-cpu", "cortex-a57", "-m", "512M",
+                                    "-drive", f"file={drive},if=virtio,format=raw"])
+        self.emulator.login()
+
+        # We run the test application with a customized message.
+        # NOTE: to manually debug this test, a Qemu emulator with
+        # virtio-gpu can be used by starting it the command line from
+        # the run log generated by this test, and by adding the
+        # arguments "-device virtio-gpu -display gtk". With this, the
+        # test application will be observable on the Qemu window. Once
+        # logged, we can use the "card1" DRM/KMS device (virtio-gpu,
+        # instead of card0, which is vkms on "card0") by using the
+        # command:
+        #     echo '{"device":"/dev/dri/card1"}' > cfg.json
+        #     export QT_QPA_EGLFS_KMS_CONFIG="$PWD/cfg.json"
+        # The Qt debug can also be enabled with the command:
+        #     export QT_LOGGING_RULES=*=true
+        # Then, run the /root/pyqt5test.py application.
+        msg = "Hello Buildroot."
+        cmd = f'/root/pyqt5test.py "{msg}"'
+        self.assertRunOk(cmd, timeout=30)
+
+        # We check the test message is present in the file created by
+        # the previous application execution.
+        cmd = f'grep -F "{msg}" /root/message.txt'
+        self.assertRunOk(cmd)
diff --git a/support/testing/tests/package/test_python_pyqt5/linux-vkms.fragment b/support/testing/tests/package/test_python_pyqt5/linux-vkms.fragment
new file mode 100644
index 00000000000..ec2ed4460c7
--- /dev/null
+++ b/support/testing/tests/package/test_python_pyqt5/linux-vkms.fragment
@@ -0,0 +1 @@ 
+CONFIG_DRM_VKMS=y
diff --git a/support/testing/tests/package/test_python_pyqt5/rootfs-overlay/root/pyqt5test.py b/support/testing/tests/package/test_python_pyqt5/rootfs-overlay/root/pyqt5test.py
new file mode 100755
index 00000000000..3efeed76876
--- /dev/null
+++ b/support/testing/tests/package/test_python_pyqt5/rootfs-overlay/root/pyqt5test.py
@@ -0,0 +1,60 @@ 
+#! /usr/bin/env python3
+#
+# This is a test application for PyQt5. It is showing a text label and
+# a "quit" button. The text of the label can be set with the first
+# (non-Qt) command line argument. A timer will send a click signal to
+# the quit button after 3 seconds. When quitting, the text of the
+# label is saved in a "message.txt" file in the current working
+# directory.
+
+import sys
+
+from PyQt5.QtCore import PYQT_VERSION_STR, QFile, QIODevice, QT_VERSION_STR, QTextStream, QTimer, Qt
+from PyQt5.QtWidgets import QApplication, QLabel, QPushButton, QVBoxLayout, QWidget
+
+
+class TestApp(QWidget):
+
+    def __init__(self, message, parent=None):
+        super(TestApp, self).__init__(parent)
+
+        self.label = QLabel(message)
+        self.label.setAlignment(Qt.AlignCenter)
+
+        self.button = QPushButton("Quit")
+        self.button.clicked.connect(self.on_button_clicked)
+
+        self.layout = QVBoxLayout()
+        self.layout.addWidget(self.label)
+        self.layout.addWidget(self.button)
+
+        self.setLayout(self.layout)
+
+        self.timer = QTimer()
+        self.timer.timeout.connect(self.button.click)
+
+    def on_button_clicked(self):
+        self.save_message()
+        app.quit()
+
+    def save_message(self):
+        f = QFile("message.txt")
+        if f.open(QIODevice.WriteOnly):
+            QTextStream(f) << (self.label.text() + '\n')
+        f.close()
+
+
+if __name__ == "__main__":
+    print("PyQt5 test for Buildroot")
+    print(f"Qt version {QT_VERSION_STR}")
+    print(f"PyQt version {PYQT_VERSION_STR}")
+
+    msg = "Hello World"
+    app = QApplication(sys.argv)
+    args = app.arguments()
+    if len(args) > 1:
+        msg = args[1]
+    testApp = TestApp(message=msg)
+    testApp.show()
+    testApp.timer.start(3000)
+    sys.exit(app.exec())