feat: add export / file packing

tests/cooker_tests.cpp

@@ -9,6 +9,8 @@
 
 #include <nlohmann/json.hpp>
 
+#include <destrum/Assets/PackFile.h>
+
 #include "TestUtils.h"
 
 using namespace test;
@@ -51,11 +53,10 @@ namespace {
         }
     }
 
-    int runChef(const CookDirs& dirs, const std::string& flags = {})
+    int runChefArgs(const CookDirs& dirs, const std::string& args)
     {
         const fs::path log = dirs.root / "chef.log";
-        std::string command = "\"" + std::string(DESTRUM_THECHEF_PATH) + "\" --input \"" + dirs.input.string() +
-                              "\" --output \"" + dirs.output.string() + "\" " + flags + " > \"" + log.string() +
+        std::string command = "\"" + std::string(DESTRUM_THECHEF_PATH) + "\" " + args + " > \"" + log.string() +
                               "\" 2>&1";
 #ifdef _WIN32
         // cmd.exe strips the outer quotes, the inner ones keep paths with spaces intact
@@ -64,6 +65,11 @@ namespace {
         return std::system(command.c_str());
     }
 
+    int runChef(const CookDirs& dirs, const std::string& flags = {})
+    {
+        return runChefArgs(dirs, "--input \"" + dirs.input.string() + "\" --output \"" + dirs.output.string() + "\" " + flags);
+    }
+
     void expectChef(const CookDirs& dirs, const std::string& flags, bool succeeds, const char* message)
     {
         if ((runChef(dirs, flags) == 0) != succeeds) {
@@ -307,6 +313,45 @@ namespace {
     }
 }
 
+namespace {
+    void testPackBundlesCookedOutputs()
+    {
+        const CookDirs dirs = makeDirs("destrum_cooker_pack");
+        writeShaders(dirs);
+        writeText(dirs.input / "notes.txt", "hello");
+        expectChef(dirs, "", true, "the first cook must succeed");
+        writeText(dirs.output / "stray.txt", "not cooked");
+
+        const fs::path pack = dirs.root / "assets.dpak";
+        const std::string packArgs = "--pack \"" + pack.string() + "\" --mount \"game=" + dirs.output.string() + "\"";
+        if (runChefArgs(dirs, packArgs) != 0) {
+            std::cerr << readFile(dirs.root / "chef.log") << '\n';
+            check(false, "packing a cooked folder must succeed");
+            return;
+        }
+
+        const PackFile::Reader reader{pack};
+        check(reader.Find("game/manifest.json") && reader.Find("game/shaders/plain.frag.spv") &&
+              reader.Find("game/notes.txt"),
+              "packs must hold the manifest and every cooked output");
+        check(!reader.Find("game/stray.txt") && !reader.Find("game/shaders/include/common.glsl"),
+              "packs must only hold what the manifest lists as outputs");
+        const auto notes = reader.Read(*reader.Find("game/notes.txt"));
+        check(std::string(notes.begin(), notes.end()) == "hello", "packed files must keep their contents");
+
+        check(runChefArgs(dirs, "--list \"" + pack.string() + "\" --top 0") == 0 &&
+              readFile(dirs.root / "chef.log").find("game/notes.txt") != std::string::npos,
+              "listing a pack must show its files");
+        check(runChefArgs(dirs, "--list \"" + dirs.output.string() + "\"") == 0 &&
+              readFile(dirs.root / "chef.log").find("Not in the manifest, won't be packed: 1 files") != std::string::npos,
+              "listing a cooked folder must point out files that won't be packed");
+
+        fs::remove(dirs.output / "notes.txt");
+        check(runChefArgs(dirs, packArgs) != 0, "packing must fail when a listed output is missing");
+        check(!fs::exists(pack.string() + ".tmp"), "a failed pack must not leave a temp file");
+    }
+}
+
 void RunCookerTests()
 {
     testCookRecordsEveryOutput();
@@ -317,4 +362,5 @@ void RunCookerTests()
     testFailedCookKeepsLastGoodOutput();
     testFallbacksAndStrictMode();
     testValidateFindsMissingOutputs();
+    testPackBundlesCookedOutputs();
 }