test: add more tests

tests/bundle_test/verify_sourcemap_shape.sh

@@ -0,0 +1,60 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if command -v bazel >/dev/null 2>&1; then
+  bazel_cmd=(bazel)
+elif command -v bazelisk >/dev/null 2>&1; then
+  bazel_cmd=(bazelisk)
+else
+  echo "bazel or bazelisk is required on PATH" >&2
+  exit 1
+fi
+
+find_workspace_root() {
+  local candidate
+  local module_path
+  local script_dir
+
+  for candidate in \
+    "${TEST_SRCDIR:-}/${TEST_WORKSPACE:-}" \
+    "${TEST_SRCDIR:-}/_main"; do
+    if [[ -n ${candidate} && -f "${candidate}/MODULE.bazel" ]]; then
+      printf '%s\n' "${candidate}"
+      return 0
+    fi
+  done
+
+  if [[ -n ${TEST_SRCDIR:-} ]]; then
+    module_path="$(find "${TEST_SRCDIR}" -maxdepth 3 -name MODULE.bazel -print -quit 2>/dev/null || true)"
+    if [[ -n ${module_path} ]]; then
+      dirname "${module_path}"
+      return 0
+    fi
+  fi
+
+  script_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd -P)"
+  candidate="$(cd "${script_dir}/../.." && pwd -P)"
+  if [[ -f "${candidate}/MODULE.bazel" ]]; then
+    printf '%s\n' "${candidate}"
+    return 0
+  fi
+
+  echo "Unable to locate rules_bun workspace root" >&2
+  exit 1
+}
+
+rules_bun_root="$(find_workspace_root)"
+
+bundle_output="$(
+  cd "${rules_bun_root}" &&
+    "${bazel_cmd[@]}" aquery 'mnemonic("BunBundle", //tests/bundle_test/sourcemap_case:sourcemap_bundle)' --output=textproto
+)"
+
+count="$(grep -Fc 'arguments: "--sourcemap"' <<<"${bundle_output}")"
+if [[ ${count} != "1" ]]; then
+  echo "Expected bun_bundle(sourcemap = True) to emit exactly one --sourcemap flag, got ${count}" >&2
+  exit 1
+fi
+
+grep -Fq 'arguments: "--outfile"' <<<"${bundle_output}"
+grep -Fq 'arguments: "tests/bundle_test/sourcemap_case/entry.ts"' <<<"${bundle_output}"