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Qt Quick Test is a unit test framework for QML applications. Test cases are
written as JavaScript functions within a QML TestCase type:
.. code-block:: JavaScript
import QtQuick
import QtTest
TestCase {
name: "MathTests"
function test_math() {
compare(2 + 2, 4, "2 + 2 = 4")
}
function test_fail() {
compare(2 + 2, 5, "2 + 2 = 5")
}
}
Functions whose names start with ``test_`` are treated as test cases to be
executed.
QML API
^^^^^^^
The `QML types <https://doc.qt.io/qt-6/qttest-qmlmodule.html>`_
in Qt Quick Test are available through the ``QtTest`` import.
To use the types, add the following import statement to your ``.qml`` file:
.. code-block:: JavaScript
import QtTest
Running Tests
^^^^^^^^^^^^^
Test cases are launched by a harness that consists of the following code:
.. code-block:: Python
import sys
from PySide6.QtQuickTest import QUICK_TEST_MAIN
QUICK_TEST_MAIN("example", sys.argv)
Where "example" is the identifier to use to uniquely identify this set of
tests.
Test execution can be controlled by a number of command line options (pass
``-h`` for help).
Executing Code Before QML Tests
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
To execute code before any of the QML tests are run, the
:py:func:`QUICK_TEST_MAIN_WITH_SETUP` function can be used. This can be useful
for setting context properties on the QML engine, amongst other things.
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