Adds a helper for running unit tests locally (#24269)

* adds a helper for running unit tests locally

* warning error

* okay it should be ready

* this shouldnt be here

code/modules/unit_tests/test_runner.dm

@@ -3,7 +3,11 @@
 // intentionally (if there's a lot of legitimate map errors), or accidentally if
 // a test condition is written incorrectly and starts e.g. logging failures for
 // every single tile.
+#ifdef LOCAL_UNIT_TESTS
+#define MAX_MAP_TEST_FAILURE_COUNT 100
+#else
 #define MAX_MAP_TEST_FAILURE_COUNT 20
+#endif
 
 /datum/test_runner
 	var/datum/unit_test/current_test
@@ -76,6 +80,11 @@
 /datum/test_runner/proc/Finalize(emit_failures = FALSE)
 	var/time = world.timeofday
 	set waitfor = FALSE
+
+	#ifdef LOCAL_UNIT_TESTS
+	emit_failures = TRUE
+	#endif
+
 	var/list/fail_reasons
 	if(GLOB)
 		if(GLOB.total_runtimes != 0)