✅ Fix window size test (WM_NORMAL_HINTS handling)

test/utils.c

@@ -0,0 +1,57 @@
+#include "utils.h"
+#include "test_set_up.h"
+
+#define MAX_COLOR 65535
+
+const time_t USER_DELAY_S = 1;
+const clock_t USER_DELAY = USER_DELAY_S * CLOCKS_PER_SEC;
+
+XColor red(float intensity) {
+	XColor red;
+	red.red = intensity * MAX_COLOR;
+	XAllocColor(test_display, XDefaultColormap(test_display, DefaultScreen(test_display)), &red);
+	return red;
+}
+
+XColor blue(float intensity) {
+	XColor blue;
+	blue.blue = intensity * MAX_COLOR;
+	XAllocColor(test_display, XDefaultColormap(test_display, DefaultScreen(test_display)), &blue);
+	return blue;
+}
+
+int wait_visibility(Display* display, Window window) {
+	int visibility;
+	XSelectInput(test_display, window, VisibilityChangeMask);
+
+	clock_t start = clock();
+	while((clock() - start) < USER_DELAY) {
+		XEvent e;
+		XCheckWindowEvent(test_display, window, VisibilityChangeMask, &e);
+		visibility = e.xvisibility.state;
+	}
+	return visibility;
+}
+
+void wait_array_visibility(Display* display, int N, Window* windows, int* visibilities) {
+	for(auto i = 0; i < N; i++)
+		XSelectInput(test_display, windows[i], VisibilityChangeMask);
+
+	clock_t user_time = clock();
+	while((clock() - user_time) < USER_DELAY * N) {
+		for(auto i = 0; i < N; i++) {
+			XEvent e;
+			XCheckWindowEvent(test_display, windows[i], VisibilityChangeMask, &e);
+			visibilities[i] = e.xvisibility.state;
+		}
+	}
+}
+
+Window parent(Display* display, Window window) {
+	Window _root;
+	Window parent;
+	Window* _children;
+	unsigned int _children_count;
+	XQueryTree(test_display, window, &_root, &parent, &_children, &_children_count);
+	return parent;
+}