1 files changed, 77 insertions, 0 deletions
diff --git a/tests/x11/test_state.c b/tests/x11/test_state.c
new file mode 100644
index 0000000..abdda95
--- /dev/null
+++ b/tests/x11/test_state.c
@@ -0,0 +1,77 @@
+/* Supply native window-state properties without requiring an X server. */
+#define XGetWindowProperty state_property
+#include "../../src/platform/x11/window.c"
+#undef XGetWindowProperty
+
+static Atom properties[3];
+static unsigned long property_count;
+static int notifications;
+static uint32_t reported_state;
+
+int state_property(Display *display, Window window, Atom property,
+        long offset, long length, Bool delete_property, Atom type,
+        Atom *actual, int *format, unsigned long *count, unsigned long *left,
+        unsigned char **data)
+{
+    assert(display && window == 42 && property == 10);
+    assert(!offset && length >= 3 && !delete_property && type == XA_ATOM);
+    *actual = XA_ATOM;
+    *format = 32;
+    *count = property_count;
+    *left = 0;
+    *data = NULL;
+    if (property_count) {
+        *data = malloc(property_count * sizeof(*properties));
+        assert(*data);
+        memcpy(*data, properties, property_count * sizeof(*properties));
+    }
+    return Success;
+}
+
+static void state_changed(struct yasl_surface *surface, uint32_t state, void *ud)
+{
+    (void)ud;
+    assert(yasl_surface_state(surface) == state);
+    reported_state = state;
+    notifications++;
+}
+
+int main(void)
+{
+    struct x11_display display = {.base.ops = &yasl_x11_backend,
+        .net_state = 10, .fullscreen = 20, .maximized_h = 21, .maximized_v = 22};
+    display.native = (Display *)&display;
+    struct x11_surface surface = {.base = {.display = &display.base,
+        .state = YASL_STATE_ACTIVATED}, .window = 42};
+    set_callbacks(&surface.base, &(struct yasl_window_cbs){.state = state_changed}, NULL);
+
+    properties[0] = display.fullscreen;
+    property_count = 1;
+    update_state(&surface);
+    assert(notifications == 1);
+    assert(reported_state == (YASL_STATE_FULLSCREEN | YASL_STATE_ACTIVATED));
+    update_state(&surface);
+    assert(notifications == 1);
+
+    /* Both maximized axes are required; activation survives property changes. */
+    properties[0] = display.maximized_h;
+    update_state(&surface);
+    assert(notifications == 2 && reported_state == YASL_STATE_ACTIVATED);
+    properties[1] = display.maximized_v;
+    property_count = 2;
+    update_state(&surface);
+    assert(notifications == 3);
+    assert(reported_state == (YASL_STATE_MAXIMIZED | YASL_STATE_ACTIVATED));
+    properties[2] = display.fullscreen;
+    property_count = 3;
+    update_state(&surface);
+    assert(notifications == 4);
+    assert(reported_state == (YASL_STATE_FULLSCREEN | YASL_STATE_MAXIMIZED | YASL_STATE_ACTIVATED));
+
+    property_count = 0;
+    update_state(&surface);
+    assert(notifications == 5 && reported_state == YASL_STATE_ACTIVATED);
+    update_state(&surface);
+    assert(notifications == 5);
+    return 0;
+}