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tests: Add simple GestureController test
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‎meson.build‎

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@@ -166,6 +166,9 @@ subdir('plugins/template')
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if get_option('documentation')
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subdir('docs')
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endif
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if get_option('tests')
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subdir('tests')
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endif
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subdir('po')
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vapigen = find_program('vapigen', required: false)

‎meson_options.txt‎

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option ('documentation', type : 'boolean', value : false)
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option ('tests', type : 'boolean', value : true)
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option ('systemd', type : 'boolean', value : true)
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option ('systemduserunitdir', type : 'string', value : '')

‎tests/MockWindowManager.vala‎

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/*
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* Copyright 2025 elementary, Inc. (https://elementary.io)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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public class Gala.MockWindowManager : Meta.Plugin, WindowManager {
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public Clutter.Actor ui_group { get; protected set; }
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public Clutter.Stage stage { get; protected set; }
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public Clutter.Actor window_group { get; protected set; }
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public Clutter.Actor top_window_group { get; protected set; }
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public Meta.BackgroundGroup background_group { get; protected set; }
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public virtual ModalProxy push_modal (Clutter.Actor actor, bool grab) {
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return new ModalProxy ();
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}
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public virtual void pop_modal (ModalProxy proxy) {
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}
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public virtual bool is_modal () {
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return false;
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}
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public virtual bool modal_proxy_valid (ModalProxy proxy) {
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return true;
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}
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public virtual void perform_action (ActionType type) {
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}
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public virtual void move_window (Meta.Window? window, Meta.Workspace workspace, uint32 timestamp) {
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}
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public virtual void switch_to_next_workspace (Meta.MotionDirection direction, uint32 timestamp) {
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}
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public virtual void launch_action (string action_key) {
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}
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public virtual bool filter_action (GestureAction action) {
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return false;
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}
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}

‎tests/lib/GestureControllerTest.vala‎

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/*
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* Copyright 2025 elementary, Inc. (https://elementary.io)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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public class Gala.MockRootTarget : Object, GestureTarget, RootTarget {
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public struct ReceivedUpdate {
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public UpdateType type;
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public GestureAction action;
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public double progress;
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}
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public Clutter.Actor? actor { get { return null; } }
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public Gee.LinkedList<ReceivedUpdate?> received_updates { get; construct; }
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construct {
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received_updates = new Gee.LinkedList<ReceivedUpdate?> ();
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}
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public override void propagate (UpdateType update_type, GestureAction action, double progress) {
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received_updates.add (ReceivedUpdate () {
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type = update_type,
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action = action,
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progress = progress
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});
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}
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}
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internal class Gala.MockGestureBackend : Object, GestureBackend {
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}
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public class Gala.GestureControllerTest : TestCase {
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private Settings gala_settings;
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private MockGestureBackend? backend;
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private GestureController? controller;
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private MockRootTarget? root_target;
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public GestureControllerTest () {
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Object (name: "GestureController");
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}
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construct {
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new GestureSettings (); // Ensure static variables are initialized
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// Make sure we configure swipe up to trigger multitasking view
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gala_settings = new GLib.Settings ("io.elementary.desktop.wm.gestures");
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gala_settings.delay ();
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gala_settings.set_string ("three-finger-swipe-up", "multitasking-view");
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add_test ("initial update", test_initial_update);
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add_test ("simple propagation", test_simple_propagation);
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}
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public override void set_up () {
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backend = new MockGestureBackend ();
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controller = new GestureController (MULTITASKING_VIEW, new MockWindowManager ());
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controller.enable_backend (backend);
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root_target = new MockRootTarget ();
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root_target.add_gesture_controller (controller);
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}
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public override void tear_down () {
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backend = null;
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controller = null;
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root_target = null;
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}
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private void test_initial_update () {
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// Test that we got the initial update when the controller was attached
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assert_cmpint (root_target.received_updates.size, EQ, 1);
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var sync_update = root_target.received_updates.poll ();
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assert_true (sync_update != null);
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assert_cmpint (sync_update.type, EQ, GestureTarget.UpdateType.UPDATE);
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assert_cmpint (sync_update.action, EQ, GestureAction.MULTITASKING_VIEW);
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assert_cmpfloat (sync_update.progress, EQ, 0.0);
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assert_true (root_target.received_updates.is_empty);
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}
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private void test_simple_propagation () {
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root_target.received_updates.poll (); // Remove the initial update
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// Test a simple propagation flow
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var gesture = new Gesture () {
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type = TOUCHPAD_SWIPE,
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direction = UP,
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fingers = 3,
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};
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var recognizing = backend.on_gesture_detected (gesture, 0);
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assert_true (recognizing);
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assert_true (root_target.received_updates.is_empty);
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assert_true (controller.recognizing);
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backend.on_begin (0, 0);
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assert_true (root_target.received_updates.size == 1);
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var update = root_target.received_updates.poll ();
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assert_true (update != null);
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assert_true (update.type == START);
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assert_true (update.action == MULTITASKING_VIEW);
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assert_true (update.progress == 0.0);
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backend.on_update (0.25, 0);
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backend.on_update (0.5, 0);
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assert_cmpfloat (controller.progress, EQ, 0.5);
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backend.on_update (0.75, 0);
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backend.on_update (1.0, 0);
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assert_true (root_target.received_updates.size == 4);
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for (int i = 0; i < 4; i++) {
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update = root_target.received_updates.poll ();
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assert_true (update != null);
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assert_true (update.type == UPDATE);
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assert_true (update.action == MULTITASKING_VIEW);
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assert_cmpfloat (update.progress, EQ, (i + 1) * 0.25);
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}
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backend.on_end (1.0, 0);
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assert_true (root_target.received_updates.size == 3);
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update = root_target.received_updates.poll ();
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assert_true (update != null);
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assert_true (update.type == UPDATE);
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assert_true (update.action == MULTITASKING_VIEW);
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assert_cmpfloat (update.progress, EQ, 1.0);
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update = root_target.received_updates.poll ();
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assert_true (update != null);
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assert_true (update.type == COMMIT);
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assert_true (update.action == MULTITASKING_VIEW);
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assert_cmpfloat (update.progress, EQ, 1.0);
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update = root_target.received_updates.poll ();
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assert_true (update != null);
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assert_true (update.type == END);
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assert_true (update.action == MULTITASKING_VIEW);
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assert_cmpfloat (update.progress, EQ, 1.0);
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assert_true (root_target.received_updates.is_empty);
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assert_false (controller.recognizing);
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assert_cmpfloat (controller.progress, EQ, 1.0);
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assert_finalize_object<MockRootTarget> (ref root_target);
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assert_finalize_object<GestureController> (ref controller);
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assert_finalize_object<MockGestureBackend> (ref backend);
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}
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}
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public int main (string[] args) {
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return new Gala.GestureControllerTest ().run (args);
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}

‎tests/lib/meson.build‎

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lib_test_sources = files(
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meson.project_source_root() / 'lib' / 'Gestures' / 'Gesture.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'GestureBackend.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'GestureController.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'GestureSettings.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'GestureTarget.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'RootTarget.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'ScrollBackend.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'SpringTimeline.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'ToucheggBackend.vala',
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meson.project_source_root() / 'lib' / 'Gestures' / 'TouchpadBackend.vala',
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)
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tests = [
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'GestureControllerTest',
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]
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foreach test : tests
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test_executable = executable(
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test,
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'@[email protected]'.format(test),
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common_test_sources,
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lib_test_sources,
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dependencies: gala_base_dep,
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install: false,
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)
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test(test, test_executable, suite: ['Gala', 'Gala/lib'])
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endforeach

‎tests/meson.build‎

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common_test_sources = files(
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'MockWindowManager.vala',
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'TestCase.vala',
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meson.project_source_root() / 'lib' / 'CommonEnums.vala',
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meson.project_source_root() / 'lib' / 'WindowManager.vala',
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)
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subdir('lib')

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