Step 171: theme engine core

editor/tests/step171_integration_test.cpp

@@ -0,0 +1,34 @@
+// Step 171: Theme engine integration 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() {
+    assert(fs::exists("src/ThemeEngine.h"));
+    const std::string themeEngine = readFile("src/ThemeEngine.h");
+    assertContains(themeEngine, "ThemeColor");
+    assertContains(themeEngine, "refreshWatchedThemes");
+    assertContains(themeEngine, "userThemeDirectory");
+
+    const std::string mainCpp = readFile("src/main.cpp");
+    assertContains(mainCpp, "userThemeDirectory");
+    assertContains(mainCpp, "refreshWatchedThemes");
+
+    printf("step171_integration_test: all assertions passed\n");
+    return 0;
+}

editor/tests/step171_test.cpp

@@ -0,0 +1,68 @@
+// Step 171: Theme engine core checks.
+
+#include <cassert>
+#include <filesystem>
+#include <fstream>
+#include <string>
+#include <thread>
+#include <chrono>
+
+#include "ThemeEngine.h"
+
+namespace fs = std::filesystem;
+
+static void writeFile(const fs::path& path, const std::string& text) {
+    std::ofstream out(path.string(), std::ios::binary);
+    out << text;
+}
+
+int main() {
+    ImGui::CreateContext();
+    ThemeEngine& themes = ThemeEngine::instance();
+    themes.clear();
+
+    const std::string jsonText =
+        "{"
+        "\"name\":\"UnitTheme\","
+        "\"syntax\":{\"keyword\":\"#010203\"},"
+        "\"editor\":{\"editor_bg\":\"#040506\"}"
+        "}";
+    assert(themes.loadThemeFromJson(jsonText));
+    assert(themes.applyTheme("UnitTheme"));
+    ImU32 keyword = themes.getColor(ThemeColor::SyntaxKeyword, IM_COL32(0, 0, 0, 255));
+    ImU32 editorBg = themes.getColor(ThemeColor::EditorBg, IM_COL32(0, 0, 0, 255));
+    assert(keyword == IM_COL32(1, 2, 3, 255));
+    assert(editorBg == IM_COL32(4, 5, 6, 255));
+
+    fs::path tempDir = fs::current_path() / "test_theme_data";
+    fs::create_directories(tempDir);
+    fs::path themeFile = tempDir / "reload.json";
+    writeFile(themeFile,
+              "{"
+              "\"name\":\"ReloadTheme\","
+              "\"syntax\":{\"keyword\":\"#111111\"}"
+              "}");
+
+    assert(themes.loadThemesFromDirectory(tempDir.string()));
+    assert(themes.applyTheme("ReloadTheme"));
+    ImU32 original = themes.getColor(ThemeColor::SyntaxKeyword, IM_COL32(0, 0, 0, 255));
+    assert(original == IM_COL32(17, 17, 17, 255));
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(10));
+    writeFile(themeFile,
+              "{"
+              "\"name\":\"ReloadTheme\","
+              "\"syntax\":{\"keyword\":\"#222222\"}"
+              "}");
+    assert(themes.refreshWatchedThemes());
+    ImU32 updated = themes.getColor(ThemeColor::SyntaxKeyword, IM_COL32(0, 0, 0, 255));
+    assert(updated == IM_COL32(34, 34, 34, 255));
+
+    std::error_code ec;
+    fs::remove(themeFile, ec);
+    fs::remove(tempDir, ec);
+
+    ImGui::DestroyContext();
+    printf("step171_test: all assertions passed\n");
+    return 0;
+}