diff --git a/tests/convert/basic/repo.toml.bak b/tests/convert/basic/repo.toml.bak
new file mode 100644
index 0000000..bb9818b
--- /dev/null
+++ b/tests/convert/basic/repo.toml.bak
@@ -0,0 +1,10 @@
+teaching_team = ["prof_john", "ta_alice", "ta_bob"]
+max_size = 50.5
+release_tags = ["v1.0", "v2.0", "final"]
+sandbox_token = "test"
+
+[files]
+whitelist_patterns = ["*.py", "*.txt", "*.md"]
+whitelist_file = ".whitelist"
+required = [ "Changelog.md", "Readme.md" ]
+immutable = [".gitignore", ".gitattributes", ".gitea/workflows/push.yaml", ".gitea/workflows/release.yaml" ]
diff --git a/tests/convert/basic/task.toml.bak b/tests/convert/basic/task.toml.bak
new file mode 100644
index 0000000..118247d
--- /dev/null
+++ b/tests/convert/basic/task.toml.bak
@@ -0,0 +1,137 @@
+# p2 repo config
+
+task="p2 m3" # task name
+
+release.deadline = 2024-10-12 23:59:00+08:00
+release.stages = [ "compile" ]
+
+[files]
+immutable = [".gitignore", ".gitattributes", ".gitea/workflows/push.yaml", ".gitea/workflows/release.yaml" ]
+required = [ "Changelog.md", "Readme.md" ]
+
+[[stages]]
+name = "Abuse of strings detected"
+command = "./strdetect src/"
+files.import = [ "tools/strdetec" ]
+
+parsers = [ "result-status" ]
+
+
+[[stages]]
+name = "Compilation"
+command = "compile"
+files.import = [ "tools/compile" ]
+files.export = [ "build/onecard", "build/asan", "build/ubsan", "build/msan", "build/compile_commands.json" ]
+
+parsers = [ "result-detail", "dummy", "result-status" ]
+result-status.comment = "Congratulations! Your code compiled successfully."
+result-status.score = 1
+dummy.comment = "\n\n### Details\n"
+result-detail.exitstatus = true
+result-detail.stderr = true
+result-detail.time = false
+result-detail.mem = false
+
+[[stages]]
+name = "[cq] Filelength"
+command = "./file-length 400 300 *.c *.h"
+files.import = [ "tools/filelength" ]
+
+parsers = [ "keyword", "dummy", "result-detail" ]
+keyword.keyword = [ "max", "recommended"]
+keyword.weight = [ 20, 10 ]
+dummy.comment = "\n\n### Details\n"
+result-detail.exitstatus = true
+result-detail.stdout = true
+result-detail.time = false
+result-detail.mem = false
+
+[[stages]]
+name = "[cq] Clang-tidy"
+command = "run-clang-tidy-18 -header-filter=.* -quiet -load=/usr/local/lib/libcodequality.so -p build"
+files.import = [ "projects/p2/.clang-tidy", "build/compile_commands.json" ]
+limit.stdout = 65
+
+parsers = [ "clangtidy", "dummy", "result-detail" ]
+clangtidy.keyword = [ "codequality-unchecked-malloc-result", "codequality-no-global-variables", "codequality-no-header-guard", "codequality-no-fflush-stdin", "readability-function-size", "readability-duplicate-include", "readability-identifier-naming", "readability-redundant", "readability-misleading-indentation", "readability-misplaced-array-index", "cppcoreguidelines-init-variables", "bugprone-suspicious-string-compare", "google-global-names-in-headers", "clang-diagnostic", "clang-analyzer", "misc", "performance", "portability" ]
+clangtidy.weight = [ 5, 20, 20, 20, 10, 5, 5, 5, 15, 5, 5, 5, 5, 5, 5, 5, 5, 5]
+dummy.comment = "\n\n### Details\n"
+result-detail.exitstatus = true
+result-detail.stdout = true
+result-detail.time = false
+result-detail.mem = false
+
+[[stages]]
+name = "[cq] Cppcheck"
+command = "cppcheck --template='{\"file\":\"{file}\",\"line\":{line}, \"column\":{column}, \"severity\":\"{severity}\", \"message\":\"{message}\", \"id\":\"{id}\"}' --force --enable=all --suppress=missingIncludeSystem  --quiet ./"
+limit.stderr = 65
+
+parsers = [ "cppcheck", "dummy", "result-detail" ]
+cppcheck.keyword = ["error", "warning", "portability", "performance", "style"]
+cppcheck.weight = [15, 5, 5, 5, 5]
+dummy.comment = "\n\n### Details\n"
+result-detail.exitstatus = true
+result-detail.stderr = true
+result-detail.time = false
+result-detail.mem = false
+
+[[stages]]
+name = "[cq] Cpplint"
+command = "cpplint --linelength=120 --filter=-legal,-readability/casting,-whitespace,-runtime/printf,-runtime/threadsafe_fn,-readability/todo,-build/include_subdir,-build/header_guard --recursive --exclude=build ."
+limit.stdout = 65
+
+parsers = [ "cpplint", "dummy", "result-detail" ]
+cpplint.keyword = [ "runtime", "readability", "build" ]
+cpplint.weight = [ 5, 20, 10]
+dummy.comment = "\n\n### Details\n"
+result-detail.exitstatus = true
+result-detail.stderr = true
+result-detail.time = false
+result-detail.mem = false
+
+[[stages]]
+name = "[run] onecard"
+group = "run"
+command="./onecard -a"
+files.import = [ "build/onecard" ]
+
+parsers = [ "result-status", "result-detail" ]
+result-status.score = 1
+result-status.forcequit = false
+result-detail.exitstatus = true
+result-detail.stderr = true
+
+[[stages]]
+name = "[run] address sanitizer"
+group = "run"
+command="./asan -a"
+files.import = [ "build/asan" ]
+
+parsers = [ "result-status", "result-detail" ]
+result-status.score = 1
+result-status.forcequit = false
+result-detail.exitstatus = true
+result-detail.stderr = true
+
+[[stages]]
+name = "[run] memory sanitizer"
+group = "run"
+command="./msan -a"
+files.import = [ "build/msan" ]
+
+parsers = [ "result-status", "result-detail" ]
+result-status.score = 1
+result-status.forcequit = false
+result-detail.exitstatus = true
+result-detail.stderr = true
+
+[[stages]]
+name = "[run] undefined behavior sanitizer"
+command="./ubsan -a"
+files.import = [ "build/ubsan" ]
+
+parsers = [ "result-status", "result-detail" ]
+result-status.score = 1
+result-status.forcequit = false
+result-detail.exitstatus = true
+result-detail.stderr = true