Load duskscript files through the asset system, not the real filesystem

scriptLoadHandler used fopen/fread directly, but every .ds a script include()s
is packed into dusk.dsk (compiled to .dsb) like every other asset now, not a
loose file next to the binary - raw filesystem reads never found them outside
a dev checkout. It now goes through assetFileInit/Open/Read/Close like the
rest of the engine's asset loaders, failing the load the same way (returning
SCRIPT_LOAD_FAILED) for a missing entry or one bigger than capacity.

test_duskscript's fixtures moved to their own assets/ subfolder and pack into
a small test.dsk with the same tools.asset.pack used for the real dusk.dsk,
and the test opens that archive straight into ASSET.zip (skipping the full
assetInit()/assetInitPlatform(), which expects a launched engine) so the
tests exercise the real compile -> pack -> asset -> runtime pipeline instead
of a filesystem shortcut around it.

Co-Authored-By: Claude Sonnet 5 <[email protected]>

test/duskscript/CMakeLists.txt

@@ -7,29 +7,32 @@ include(dusktest)
 
 dusktest(test_duskscript.c)
 
-# Compile the fixture scripts to bytecode with duskscriptcc at build time, so
-# the test exercises the real compiler -> runtime -> consolePrint pipeline.
-set(DUSKSCRIPT_TEST_FIXTURE_DS ${CMAKE_CURRENT_LIST_DIR}/fixture.ds)
-set(DUSKSCRIPT_TEST_FIXTURE_DSB ${CMAKE_CURRENT_BINARY_DIR}/fixture.dsb)
-set(DUSKSCRIPT_TEST_NUMBERS_DS ${CMAKE_CURRENT_LIST_DIR}/fixture_numbers.ds)
-set(DUSKSCRIPT_TEST_NUMBERS_DSB ${CMAKE_CURRENT_BINARY_DIR}/fixture_numbers.dsb)
+# Scripts are loaded through the asset system (see scriptLoadHandler in
+# src/dusk/script/script.c), not the real filesystem, so the fixtures are
+# packed into a small test.dsk with the same tools.asset.pack used for the
+# game's own dusk.dsk - this exercises the real compiler -> pack -> asset ->
+# runtime -> consolePrint pipeline rather than a shortcut around it.
+set(DUSKSCRIPT_TEST_ASSETS_DIR ${CMAKE_CURRENT_LIST_DIR}/assets)
+set(DUSKSCRIPT_TEST_DSK ${CMAKE_CURRENT_BINARY_DIR}/test.dsk)
 
 add_custom_command(
-  OUTPUT ${DUSKSCRIPT_TEST_FIXTURE_DSB}
-  COMMAND duskscriptcc ${DUSKSCRIPT_TEST_FIXTURE_DS} -o ${DUSKSCRIPT_TEST_FIXTURE_DSB}
-  DEPENDS duskscriptcc ${DUSKSCRIPT_TEST_FIXTURE_DS}
-  COMMENT "Compiling duskscript test fixture"
+  OUTPUT ${DUSKSCRIPT_TEST_DSK}
+  COMMAND ${Python3_EXECUTABLE} -m tools.asset.pack
+    --input ${DUSKSCRIPT_TEST_ASSETS_DIR}
+    --output ${DUSKSCRIPT_TEST_DSK}
+    --duskscriptcc "$<TARGET_FILE:duskscriptcc>"
+  WORKING_DIRECTORY ${DUSK_ROOT_DIR}
+  DEPENDS
+    duskscriptcc
+    ${DUSKSCRIPT_TEST_ASSETS_DIR}/fixture.ds
+    ${DUSKSCRIPT_TEST_ASSETS_DIR}/fixture_numbers.ds
+  COMMENT "Packing duskscript test fixtures"
 )
-add_custom_command(
-  OUTPUT ${DUSKSCRIPT_TEST_NUMBERS_DSB}
-  COMMAND duskscriptcc ${DUSKSCRIPT_TEST_NUMBERS_DS} -o ${DUSKSCRIPT_TEST_NUMBERS_DSB}
-  DEPENDS duskscriptcc ${DUSKSCRIPT_TEST_NUMBERS_DS}
-  COMMENT "Compiling duskscript numbers test fixture"
-)
-add_custom_target(duskscript_test_fixture DEPENDS ${DUSKSCRIPT_TEST_FIXTURE_DSB} ${DUSKSCRIPT_TEST_NUMBERS_DSB})
+add_custom_target(duskscript_test_fixture DEPENDS ${DUSKSCRIPT_TEST_DSK})
 add_dependencies(test_duskscript duskscript_test_fixture)
 
 target_compile_definitions(test_duskscript PRIVATE
-  DUSKSCRIPT_TEST_FIXTURE="${DUSKSCRIPT_TEST_FIXTURE_DSB}"
-  DUSKSCRIPT_TEST_NUMBERS="${DUSKSCRIPT_TEST_NUMBERS_DSB}"
+  DUSKSCRIPT_TEST_DSK="${DUSKSCRIPT_TEST_DSK}"
+  DUSKSCRIPT_TEST_FIXTURE="fixture.dsb"
+  DUSKSCRIPT_TEST_NUMBERS="fixture_numbers.dsb"
 )

test/duskscript/test_duskscript.c

@@ -8,6 +8,9 @@
 #include "dusktest.h"
 #include "script/script.h"
 #include "console/console.h"
+#include "asset/asset.h"
+#include "asset/assetdsk.h"
+#include "util/memory.h"
 
 static void test_scriptRunsAndPrintsToConsole(void **state) {
   scripterror_t error;
@@ -52,10 +55,27 @@ static void test_scriptNumbersAreAllFloats(void **state) {
   consoleDispose();
 }
 
+// Fixtures load through the asset system now, so ASSET needs a real zip
+// behind it - open the packed test.dsk directly rather than the full
+// assetInit()/assetInitPlatform(), which expects a real launched engine.
+static int duskscript_test_setup(void **state) {
+  memoryZero(&ASSET, sizeof(ASSET));
+  threadMutexInit(&ASSET.zipLock);
+  assert_int_equal(errorIsOk(assetDskOpenFromPath(DUSKSCRIPT_TEST_DSK, &ASSET.zip)), true);
+  return 0;
+}
+
+static int duskscript_test_teardown(void **state) {
+  zip_close(ASSET.zip);
+  threadMutexDispose(&ASSET.zipLock);
+  memoryZero(&ASSET, sizeof(ASSET));
+  return 0;
+}
+
 int main(void) {
   const struct CMUnitTest tests[] = {
     cmocka_unit_test(test_scriptRunsAndPrintsToConsole),
     cmocka_unit_test(test_scriptNumbersAreAllFloats),
   };
-  return cmocka_run_group_tests(tests, NULL, NULL);
+  return cmocka_run_group_tests(tests, duskscript_test_setup, duskscript_test_teardown);
 }