Tests: Use a single executable

tests/lib/GestureControllerTest.vala

@@ -201,7 +201,3 @@ public class Gala.GestureControllerTest : MutterTestCase {
         run_main_loop ();
     }
 }
-
-public int main (string[] args) {
-    return new Gala.GestureControllerTest ().run (args);
-}

tests/lib/Main.vala

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2026 elementary, Inc. (https://elementary.io)
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+namespace Gala {
+    public int main (string[] args) {
+        var test_name = args[1];
+
+        var test_case = get_test_case (test_name);
+
+        if (test_case == null) {
+            warning ("TestCase %s not found", test_name);
+            return 1;
+        }
+
+        return test_case.run (args);
+    }
+
+    private TestCase? get_test_case (string name) {
+        switch (name) {
+            case "GestureControllerTest": return new GestureControllerTest ();
+            case "PropertyTargetTest": return new PropertyTargetTest ();
+            case "SetupTest": return new SetupTest ();
+            case "SwipeTriggerTest": return new SwipeTriggerTest ();
+            default: return null;
+        }
+    }
+}

tests/lib/PropertyTargetTest.vala

@@ -151,7 +151,3 @@ public class Gala.PropertyTargetTest : TestCase {
         assert_finalize_object<MockObject> (ref target);
     }
 }
-
-public int main (string[] args) {
-    return new Gala.PropertyTargetTest ().run (args);
-}

tests/lib/SetupTest.vala

@@ -88,7 +88,3 @@ public class Gala.SetupTest : MutterTestCase {
         assert_cmpint (frames, GT, 0);
     }
 }
-
-public int main (string[] args) {
-    return new Gala.SetupTest ().run (args);
-}

tests/lib/SwipeTriggerTest.vala

@@ -56,7 +56,3 @@ public class Gala.SwipeTriggerTest : MutterTestCase {
         assert_finalize_object (ref trigger);
     }
 }
-
-public int main (string[] args) {
-    return new Gala.SwipeTriggerTest ().run (args);
-}

tests/lib/meson.build

@@ -5,15 +5,26 @@ tests = [
     'SwipeTriggerTest',
 ]
 
+test_sources = []
 foreach test : tests
-    test_executable = executable(
-        test,
-        '@0@.vala'.format(test),
-        common_test_sources,
-        gala_lib_sources,
-        dependencies: gala_base_dep,
-        install: false,
-    )
+    test_sources += test + '.vala'
+endforeach
+
+lib_test_sources = [
+    'Main.vala'
+]
 
-    test(test, test_executable, suite: ['Gala', 'Gala/lib'], is_parallel: false)
+test_executable = executable(
+    'io.elementary.gala.tests',
+    common_test_sources,
+    lib_test_sources,
+    test_sources,
+    gala_lib_sources,
+    dependencies: gala_base_dep,
+    install: false,
+)
+
+foreach test : tests
+    test(test, test_executable, args: test, suite: ['Gala', 'Gala/lib'], is_parallel: false)
 endforeach
+