Step 167: split EditorState into sub-states

editor/tests/step166_test.cpp

@@ -0,0 +1,87 @@
+// Step 166: Extract main.cpp into panel headers
+// Verify: main.cpp size reduced, panel headers exist and compile,
+//         EditorState has rendering context fields, StringUtils shared.
+
+#include <cassert>
+#include <fstream>
+#include <string>
+#include <sstream>
+#include <filesystem>
+
+// Verify panel headers compile
+#include "StringUtils.h"
+#include "GoToLine.h"
+#include "EmacsPackageBrowser.h"
+
+namespace fs = std::filesystem;
+
+static int countFileLines(const std::string& path) {
+    std::ifstream f(path);
+    if (!f.is_open()) return -1;
+    int n = 0;
+    std::string line;
+    while (std::getline(f, line)) ++n;
+    return n;
+}
+
+int main() {
+    // 1. main.cpp should be under 400 lines (was 2736, now ~330)
+    int mainLines = countFileLines("src/main.cpp");
+    assert(mainLines > 0 && "main.cpp must exist");
+    assert(mainLines < 400 && "main.cpp must be under 400 lines after extraction");
+
+    // 2. All 9 panel headers must exist
+    const char* panelHeaders[] = {
+        "src/panels/MenuBarPanel.h",
+        "src/panels/ExplorerPanel.h",
+        "src/panels/SidePanels.h",
+        "src/panels/SearchPanels.h",
+        "src/panels/SettingsPanel.h",
+        "src/panels/DialogPanels.h",
+        "src/panels/EditorPanel.h",
+        "src/panels/BottomPanel.h",
+        "src/panels/StatusBarPanel.h",
+    };
+    for (const char* p : panelHeaders) {
+        assert(fs::exists(p) && "Panel header must exist");
+        int lines = countFileLines(p);
+        assert(lines > 5 && "Panel header must have content");
+    }
+
+    // 3. StringUtils.h provides trimCopy (compile-time check + runtime)
+    assert(trimCopy("  hello  ") == "hello");
+    assert(trimCopy("") == "");
+    assert(trimCopy("   ") == "");
+    assert(trimCopy("no-trim") == "no-trim");
+
+    // 4. GoToLine.h still works (uses trimCopy from StringUtils.h)
+    int line = 0, col = 0;
+    assert(parseLineColInput("42", line, col));
+    assert(line == 42 && col == 1);
+    assert(parseLineColInput("10:5", line, col));
+    assert(line == 10 && col == 5);
+    assert(parseLineColInput("  :7:3  ", line, col));
+    assert(line == 7 && col == 3);
+
+    // 5. EditorState rendering context fields exist (compile-time check)
+    // Verified by panels compiling and referencing state.monoFont, state.uiFont, etc.
+
+    // 6. main.cpp includes all panel headers
+    {
+        std::ifstream f("src/main.cpp");
+        assert(f.is_open());
+        std::string content((std::istreambuf_iterator<char>(f)),
+                             std::istreambuf_iterator<char>());
+        assert(content.find("#include \"panels/MenuBarPanel.h\"") != std::string::npos);
+        assert(content.find("#include \"panels/EditorPanel.h\"") != std::string::npos);
+        assert(content.find("#include \"panels/BottomPanel.h\"") != std::string::npos);
+        assert(content.find("#include \"panels/StatusBarPanel.h\"") != std::string::npos);
+        assert(content.find("#include \"panels/DialogPanels.h\"") != std::string::npos);
+        // main.cpp should NOT contain renderMenuBar definition
+        assert(content.find("static void renderMenuBar") == std::string::npos);
+        assert(content.find("static void renderEditorPanel") == std::string::npos);
+    }
+
+    printf("step166_test: all assertions passed\n");
+    return 0;
+}