[MIRROR] JSON Logging Refactor (#11623)

Co-authored-by: Selis <12716288+ItsSelis@users.noreply.github.com>
Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>

code/modules/unit_tests/mapping.dm

@@ -0,0 +1,19 @@
+/// Conveys all log_mapping messages as unit test failures, as they all indicate mapping problems.
+/datum/unit_test/log_mapping
+	// Happen before all other tests, to make sure we only capture normal mapping logs.
+	priority = TEST_PRE
+
+/datum/unit_test/log_mapping/Run()
+	var/static/regex/test_areacoord_regex = regex(@"\(-?\d+,-?\d+,(-?\d+)\)")
+
+	for(var/log_entry in GLOB.unit_test_mapping_logs)
+		// Only fail if AREACOORD was conveyed, and it's a station or mining z-level. FIXME: SEE BELOW!
+		// This is due to mapping errors don't have coords being impossible to diagnose as a unit test,
+		// and various ruins frequently intentionally doing non-standard things.
+		if(!test_areacoord_regex.Find(log_entry))
+			continue
+		// var/z = text2num(test_areacoord_regex.group[1])
+		//if(!is_station_level(z) && !is_mining_level(z)) // FIXME: We cannot check for these yet!
+		//	continue
+
+		TEST_FAIL(log_entry)