feat: proper windows support

tests/bun_test_test/configured_suite_shape.sh

@@ -4,21 +4,39 @@ set -euo pipefail
 launcher="$1"
 retry_launcher="$2"
 
-grep -Fq -- '--no-install' "${launcher}"
-grep -Fq -- '--preload' "${launcher}"
-grep -Fq -- '--env-file' "${launcher}"
-grep -Fq -- '--no-env-file' "${launcher}"
-grep -Fq -- '--timeout' "${launcher}"
-grep -Fq -- '--update-snapshots' "${launcher}"
-grep -Fq -- '--rerun-each' "${launcher}"
-grep -Fq -- '--concurrent' "${launcher}"
-grep -Fq -- '--randomize' "${launcher}"
-grep -Fq -- '--seed' "${launcher}"
-grep -Fq -- '--bail' "${launcher}"
-grep -Fq -- '--max-concurrency' "${launcher}"
-grep -Fq -- '--reporter' "${launcher}"
-grep -Fq -- '--reporter-outfile' "${launcher}"
-grep -Fq -- '--coverage' "${launcher}"
-grep -Fq -- '--coverage-dir' "${launcher}"
-grep -Fq -- '--coverage-reporter' "${launcher}"
-grep -Fq -- '--retry' "${retry_launcher}"
+python3 - "${launcher}" "${retry_launcher}" <<'PY'
+import json
+import pathlib
+import sys
+
+def read_spec(launcher: str):
+    path = pathlib.Path(launcher)
+    if path.suffix.lower() == ".cmd":
+        path = pathlib.Path(str(path)[:-4])
+    return json.loads(pathlib.Path(f"{path}.launcher.json").read_text())
+
+launcher_spec = read_spec(sys.argv[1])
+retry_spec = read_spec(sys.argv[2])
+
+for value in [
+    "--no-install",
+    "--no-env-file",
+    "--timeout",
+    "--update-snapshots",
+    "--rerun-each",
+    "--concurrent",
+    "--randomize",
+    "--seed",
+    "--bail",
+    "--max-concurrency",
+]:
+    assert value in launcher_spec["argv"], (value, launcher_spec)
+
+assert launcher_spec["preload_short_paths"], launcher_spec
+assert launcher_spec["env_file_short_paths"], launcher_spec
+assert launcher_spec["reporter"] == "junit", launcher_spec
+assert launcher_spec["coverage"] is True, launcher_spec
+assert launcher_spec["coverage_reporters"] == ["lcov"], launcher_spec
+assert "--retry" in retry_spec["argv"], retry_spec
+assert "3" in retry_spec["argv"], retry_spec
+PY