extends "res://tests/test_case.gd"

const MatchNet = preload("res://scripts/match_net.gd")

# Adversarial-review regression: _hello's player_name used to be broadcast
# to every peer completely unvalidated — a multi-MB name head-of-line-
# blocked the reliable control channel hard enough that a concurrently-
# joining client's own _welcome never arrived. _sanitize_player_name() is
# the fix; these are pure-function tests for it, independent of the live
# two-process rejection test in tests/match_net_smoke.gd (--role=client-longname).

func test_normal_name_unchanged() -> void:
	assert_eq(MatchNet._sanitize_player_name("Alice"), "Alice", "a normal name passes through unchanged")


func test_strips_control_characters() -> void:
	var bell := String.chr(7)   # a control char with no named GDScript escape
	var raw := "Bad\nName\twith\rcontrol" + bell + "chars"
	var clean := MatchNet._sanitize_player_name(raw)
	assert_true(not clean.contains("\n"), "no newline")
	assert_true(not clean.contains("\t"), "no tab")
	assert_true(not clean.contains("\r"), "no carriage return")
	assert_true(not clean.contains(bell), "no bell/control char")


func test_clamps_to_max_display_length() -> void:
	var raw := "X".repeat(1000)
	var clean := MatchNet._sanitize_player_name(raw)
	assert_eq(clean.length(), MatchNet.MAX_PLAYER_NAME_LENGTH, "clamped to MAX_PLAYER_NAME_LENGTH")


func test_empty_or_whitespace_only_falls_back_to_default() -> void:
	assert_eq(MatchNet._sanitize_player_name(""), "Player", "empty string falls back")
	assert_eq(MatchNet._sanitize_player_name("   "), "Player", "whitespace-only falls back")
	assert_eq(MatchNet._sanitize_player_name("\n\t\r"), "Player", "control-characters-only falls back")


func test_leading_trailing_whitespace_trimmed() -> void:
	assert_eq(MatchNet._sanitize_player_name("  Bob  "), "Bob", "surrounding whitespace trimmed")