#!/usr/bin/env bash
# Minimal mode coverage: ensure the fallback JSON parser and reduced capability surface behave.
# shellcheck disable=SC2034 # Used by test runner for reporting.
TEST_DESC="Minimal mode capabilities and logging validation."
set -euo pipefail
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=../common/env.sh
# shellcheck disable=SC1091
. "${SCRIPT_DIR}/../common/env.sh"
# shellcheck source=../common/assert.sh
# shellcheck disable=SC1091
. "${SCRIPT_DIR}/../common/assert.sh"
test_create_tmpdir
WORKSPACE="${TEST_TMPDIR}/workspace"
test_stage_workspace "${WORKSPACE}"
cat <<'JSON' >"${WORKSPACE}/requests.ndjson"
{"jsonrpc":"2.0","id":"init","method":"initialize","params":{"protocolVersion":"2025-03-26"}}
{"jsonrpc":"2.0","method":"notifications/initialized"}
{"jsonrpc":"2.0","id":"lvl-invalid","method":"logging/setLevel","params":{"level":"VERBOSE\\u0041","details":{"nested":[1,{"x":"y"}]}}}
{"jsonrpc":"2.0","id":"lvl-valid","method":"logging/setLevel","params":{"level":"DEBUG","meta":{"nested":[{"key":"value"},"x\\\"y"],"depth":{"inner":{"flag":true}}}}}
JSON
(
cd "${WORKSPACE}" || exit 1
MCPBASH_PROJECT_ROOT="${WORKSPACE}" \
MCPBASH_FORCE_MINIMAL=true \
./bin/mcp-bash <"${WORKSPACE}/requests.ndjson" >"${WORKSPACE}/responses.ndjson"
)
assert_file_exists "${WORKSPACE}/responses.ndjson"
assert_json_lines "${WORKSPACE}/responses.ndjson"
init_protocol="$(
jq -r 'select(.id=="init") | .result.protocolVersion // empty' "${WORKSPACE}/responses.ndjson"
)"
assert_eq "2025-03-26" "${init_protocol}" "minimal mode should honor requested protocol negotiation"
init_caps="$(
jq -c 'select(.id=="init") | .result.capabilities // empty' "${WORKSPACE}/responses.ndjson"
)"
assert_eq '{"logging":{}}' "${init_caps}" "minimal mode capabilities should be logging-only"
invalid_code="$(
jq -r 'select(.id=="lvl-invalid") | .error.code // empty' "${WORKSPACE}/responses.ndjson"
)"
assert_eq "-32602" "${invalid_code}" "invalid log level should be rejected in minimal mode"
invalid_message="$(
jq -r 'select(.id=="lvl-invalid") | .error.message // empty' "${WORKSPACE}/responses.ndjson"
)"
assert_eq "Invalid log level" "${invalid_message}" "invalid log level response message mismatch"
valid_response="$(
jq -c 'select(.id=="lvl-valid") | .result // empty' "${WORKSPACE}/responses.ndjson"
)"
assert_eq '{}' "${valid_response}" "valid logging/setLevel should succeed in minimal mode"
# Forced minimal should still restrict capabilities even if jq/gojq are on PATH.
FORCED_ROOT="${TEST_TMPDIR}/minimal-forced"
test_stage_workspace "${FORCED_ROOT}"
cat <<'JSON' >"${FORCED_ROOT}/requests.ndjson"
{"jsonrpc":"2.0","id":"init","method":"initialize","params":{}}
{"jsonrpc":"2.0","method":"notifications/initialized"}
{"jsonrpc":"2.0","id":"log","method":"logging/setLevel","params":{"level":"INVALID"}}
JSON
(
cd "${FORCED_ROOT}" || exit 1
MCPBASH_FORCE_MINIMAL=true PATH="/usr/bin:/bin" MCPBASH_PROJECT_ROOT="${FORCED_ROOT}" ./bin/mcp-bash <"${FORCED_ROOT}/requests.ndjson" >"${FORCED_ROOT}/responses.ndjson"
) || true
forced_caps="$(jq -c 'select(.id=="init") | .result.capabilities // empty' "${FORCED_ROOT}/responses.ndjson")"
if [ "${forced_caps}" != '{"logging":{}}' ]; then
test_fail "expected logging-only capabilities when forced minimal, got ${forced_caps}"
fi
forced_log_code="$(jq -r 'select(.id=="log") | .error.code // empty' "${FORCED_ROOT}/responses.ndjson")"
if [ "${forced_log_code}" != "-32602" ]; then
test_fail "invalid log level should be rejected in forced minimal mode"
fi
test_old_protocol_suppresses_list_changed() {
# Set up workspace with tools to ensure notifications WOULD fire on newer protocol
local test_dir
test_dir="$(mktemp -d)"
mkdir -p "${test_dir}/tools/test-tool"
cat >"${test_dir}/tools/test-tool/tool.sh" <<'TOOL'
#!/usr/bin/env bash
# @describe A test tool
echo "ok"
TOOL
chmod +x "${test_dir}/tools/test-tool/tool.sh"
local output_file="${test_dir}/output.json"
# Run mcp-bash, redirecting stdout to file to avoid pipe hangs
# We use 2>/dev/null to ignore stderr logs
# Set short intervals to ensure quick shutdown
MCPBASH_RESOURCES_POLL_INTERVAL_SECS=0 \
MCPBASH_PROGRESS_FLUSH_INTERVAL=0.1 \
MCPBASH_PROJECT_ROOT="${test_dir}" \
./bin/mcp-bash <<'EOF' >"${output_file}" 2>/dev/null
{"jsonrpc":"2.0","id":"init","method":"initialize","params":{"protocolVersion":"2025-03-26"}}
{"jsonrpc":"2.0","method":"notifications/initialized"}
{"jsonrpc":"2.0","id":"l1","method":"tools/list"}
EOF
local count
count=$(grep -c "list_changed" "${output_file}" || true)
rm -rf "${test_dir}"
assert_eq 0 "${count}" "Protocol 2025-03-26 should suppress list_changed notifications"
}
test_old_protocol_suppresses_list_changed
