Change the word filter configuration to allow providing reasons, fix emotes not working in filters, and implement separate OOC/IC/PDA filters (#61606)

code/modules/unit_tests/_unit_tests.dm

@@ -50,6 +50,7 @@
 #include "breath.dm"
 #include "card_mismatch.dm"
 #include "chain_pull_through_space.dm"
+#include "chat_filter.dm"
 #include "combat.dm"
 #include "component_tests.dm"
 #include "connect_loc.dm"

code/modules/unit_tests/chat_filter.dm

@@ -0,0 +1,81 @@
+#define BLOCKED_IC "This message is not allowed IC, please use a different weird test phrase."
+#define BLOCKED_IC_OUTSIDE_PDA "Kirby dancing is strictly prohibited on this server."
+#define BLOCKED_SHARED "This message is not allowed anywhere, please use a different weird test phrase."
+
+/// Tests the sanity of the chat filter, ensuring it properly blocks words and gives the reason
+/datum/unit_test/chat_filter_sanity
+
+/datum/unit_test/chat_filter_sanity/Run()
+	// Update the chat filters to only have test phrases, just in case the toml is different
+	config.shared_filter_reasons = list("blockedinshared" = BLOCKED_SHARED)
+	config.ic_filter_reasons = list("blockedinic" = BLOCKED_IC)
+	config.ic_outside_pda_filter_reasons = list("<(0_0<)" = BLOCKED_IC_OUTSIDE_PDA)
+	config.update_chat_filter_regexes()
+
+	test_filter(
+		"this message is blockedinic, AND has a comma (which needs word bounds)",
+		"blockedinic",
+		BLOCKED_IC,
+		BLOCKED_IC,
+		null,
+	)
+
+	test_filter(
+		"<(0_0<) <(0_0)> (>0_0)> KIRBY DANCE!!!",
+		"<(0_0<)",
+		BLOCKED_IC_OUTSIDE_PDA,
+		null,
+		null,
+	)
+
+	test_filter(
+		"This message is blockedinshared, meaning it's banned EVERYWHERE",
+		"blockedinshared",
+		BLOCKED_SHARED,
+		BLOCKED_SHARED,
+		BLOCKED_SHARED,
+	)
+
+/datum/unit_test/chat_filter_sanity/proc/test_filter(
+	message,
+	blocked_word,
+	ic_filter_result,
+	pda_filter_result,
+	ooc_filter_result,
+)
+	var/ic_filter = is_ic_filtered(message)
+	var/pda_filter = is_ic_filtered_for_pdas(message)
+	var/ooc_filter = is_ooc_filtered(message)
+
+	test_filter_result("IC", message, ic_filter, ic_filter_result, blocked_word)
+	test_filter_result("PDA", message, pda_filter, pda_filter_result, blocked_word)
+	test_filter_result("OOC", message, ooc_filter, ooc_filter_result, blocked_word)
+
+/datum/unit_test/chat_filter_sanity/proc/test_filter_result(
+	filter_type,
+	message,
+	outcome,
+	expected_reason,
+	expected_blocked_word,
+)
+	if (isnull(outcome) && isnull(expected_reason))
+		return
+
+	if (isnull(outcome))
+		Fail("[message] was not blocked on the [filter_type] filter when it was expected to")
+		return
+
+	if (isnull(expected_reason))
+		Fail("[message] was blocked on the [filter_type] filter when it wasn't expected to: [json_encode(outcome)]")
+		return
+
+	if (outcome[CHAT_FILTER_INDEX_WORD] != expected_blocked_word)
+		Fail("[message] was blocked on the [filter_type] filter, but for a different word: \"[outcome[CHAT_FILTER_INDEX_WORD]]\" (instead of [expected_blocked_word])")
+		return
+
+	if (outcome[CHAT_FILTER_INDEX_REASON] != expected_reason)
+		Fail("[message] was blocked on the [filter_type] filter, but for a different reason: \"[outcome[CHAT_FILTER_INDEX_REASON]]\" (instead of [expected_reason])")
+
+#undef BLOCKED_IC
+#undef BLOCKED_IC_OUTSIDE_PDA
+#undef BLOCKED_SHARED