import os


def register(registry):
	# W4/W5 kill pages are only meaningful with the wasm backend enabled. Native
	# requests may terminate the worker by design, so keep them out of the normal
	# native suite unless the W5 harness opts in explicitly.
	if os.environ.get("UCE_INCLUDE_WASM_KILL") != "1":
		return

	pages = [
		# oob is __builtin_trap() → wasm `unreachable`, a signal-delivering trap.
		# It crashed the worker until signals_based_traps(false) (see make_engine
		# in src/wasm/worker.cpp); keeping it in the gate guards that fix.
		("wasm kill trap", "/tests/wasm-kill/oob.uce", "unreachable"),
		("wasm kill loop", "/tests/wasm-kill/loop.uce", "interrupt"),
		("wasm kill recurse", "/tests/wasm-kill/recurse.uce", "wasm_kill_recurse"),
	]
	for name, path, marker in pages:
		def make_case(page_path=path, expected_marker=marker):
			def run(context):
				response = context.expect_status(page_path, 500)
				context.expect_body_contains(response, "wasm runtime error during request")
				context.expect_body_contains(response, expected_marker)
				# The worker should remain healthy after the trap.
				health = context.expect_status("/demo/hello.uce", 200)
				context.expect_body_contains(health, "hello world")
				return "clean wasm trap page and post-trap health check for %s" % page_path
			return run
		registry.case(name, make_case(), tags=["http", "uce", "wasm", "kill", "internal"])