Core: Add a test suite (#9297)

Adds a test suite for testing hyprland's features with a runtime tester

---------

Co-authored-by: Mihai Fufezan <mihai@fufexan.net>

hyprtester/src/tests/shared.cpp

@@ -0,0 +1,92 @@
+#include "shared.hpp"
+#include <csignal>
+#include <cerrno>
+#include <thread>
+#include <print>
+#include "../shared.hpp"
+#include "../hyprctlCompat.hpp"
+
+using namespace Hyprutils::OS;
+using namespace Hyprutils::Memory;
+
+CUniquePointer<CProcess> Tests::spawnKitty(const std::string& class_) {
+    const auto               COUNT_BEFORE = windowCount();
+
+    CUniquePointer<CProcess> kitty = makeUnique<CProcess>("kitty", class_.empty() ? std::vector<std::string>{} : std::vector<std::string>{"--class", class_});
+    kitty->addEnv("WAYLAND_DISPLAY", WLDISPLAY);
+    kitty->runAsync();
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(10));
+
+    // wait while kitty spawns
+    int counter = 0;
+    while (processAlive(kitty->pid()) && windowCount() == COUNT_BEFORE) {
+        counter++;
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+        if (counter > 50)
+            return nullptr;
+    }
+
+    if (!processAlive(kitty->pid()))
+        return nullptr;
+
+    return kitty;
+}
+
+bool Tests::processAlive(pid_t pid) {
+    errno   = 0;
+    int ret = kill(pid, 0);
+    return ret != -1 || errno != ESRCH;
+}
+
+int Tests::windowCount() {
+    return countOccurrences(getFromSocket("/clients"), "focusHistoryID: ");
+}
+
+int Tests::countOccurrences(const std::string& in, const std::string& what) {
+    int  cnt = 0;
+    auto pos = in.find(what);
+    while (pos != std::string::npos) {
+        cnt++;
+        pos = in.find(what, pos + what.length() - 1);
+    }
+
+    return cnt;
+}
+
+bool Tests::killAllWindows() {
+    auto str = getFromSocket("/clients");
+    auto pos = str.find("Window ");
+    while (pos != std::string::npos) {
+        auto pos2 = str.find(" -> ", pos);
+        getFromSocket("/dispatch killwindow address:0x" + str.substr(pos + 7, pos2 - pos - 7));
+        pos = str.find("Window ", pos + 5);
+    }
+
+    int counter = 0;
+    while (Tests::windowCount() != 0) {
+        counter++;
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+        if (counter > 50) {
+            std::println("{}Timed out waiting for windows to close", Colors::RED);
+            return false;
+        }
+    }
+
+    return true;
+}
+
+void Tests::waitUntilWindowsN(int n) {
+    int counter = 0;
+    while (Tests::windowCount() != n) {
+        counter++;
+        std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+        if (counter > 50) {
+            std::println("{}Timed out waiting for windows", Colors::RED);
+            return;
+        }
+    }
+}