Step 176: smooth UI transitions

editor/tests/step176_test.cpp

@@ -0,0 +1,41 @@
+// Step 176: Smooth UI transitions checks.
+
+#include <cassert>
+#include <filesystem>
+#include <fstream>
+#include <string>
+
+namespace fs = std::filesystem;
+
+static std::string readFile(const std::string& path) {
+    std::ifstream f(path);
+    if (!f.is_open()) return {};
+    return std::string((std::istreambuf_iterator<char>(f)),
+                       std::istreambuf_iterator<char>());
+}
+
+static void assertContains(const std::string& text, const std::string& needle) {
+    assert(text.find(needle) != std::string::npos);
+}
+
+int main() {
+    const std::string animUtils = readFile("src/AnimationUtils.h");
+    assertContains(animUtils, "panelTransition");
+    assertContains(animUtils, "tooltipAlpha");
+    assertContains(animUtils, "blinkAlpha");
+
+    const std::string settings = readFile("src/SettingsManager.h");
+    assertContains(settings, "reduceMotion");
+    assertContains(settings, "cursorBlinkRate");
+
+    const std::string codeEditor = readFile("src/CodeEditorWidget.h");
+    assertContains(codeEditor, "searchPulseLine");
+    assertContains(codeEditor, "cursorBlinkRate");
+
+    const std::string notifications = readFile("src/NotificationSystem.h");
+    assertContains(notifications, "renderToasts");
+    assertContains(notifications, "reduceMotion");
+
+    printf("step176_test: all assertions passed\n");
+    return 0;
+}