Added a standardized json unit test results log and added my vscode t…

…est runner to recommendations (tgstation#56058)

Link to the test explorer: https://marketplace.visualstudio.com/items?itemName=Donkie.vscode-tgstation-test-adapter

The test explorer adapter lets you compile and run the code in one click of a button, with no messing about with defines necessary

The extension supports reading test results from the unit test logs, but its shitty having to parse logs for that, so this PR also adds support for a somewhat standardized method of logging unit test results to a json file instead.

.vscode/extensions.json

@@ -5,6 +5,7 @@
 		"EditorConfig.EditorConfig",
 		"arcanis.vscode-zipfs",
 		"dbaeumer.vscode-eslint",
-		"kevinkyang.auto-comment-blocks"
+		"kevinkyang.auto-comment-blocks",
+		"Donkie.vscode-tgstation-test-adapter"
 	]
 }

.vscode/settings.json

@@ -14,5 +14,6 @@
 		}
 	],
 	"files.eol": "\n",
-	"gitlens.advanced.blame.customArguments": ["-w"]
+	"gitlens.advanced.blame.customArguments": ["-w"],
+	"tgstationTestExplorer.project.resultsType": "json"
 }

code/modules/unit_tests/_unit_tests.dm

@@ -32,6 +32,11 @@
 /// Intended to be used in the manner of `TEST_FOCUS(/datum/unit_test/math)`
 #define TEST_FOCUS(test_path) ##test_path { focus = TRUE; }
 
+/// Constants indicating unit test completion status
+#define UNIT_TEST_PASSED 0
+#define UNIT_TEST_FAILED 1
+#define UNIT_TEST_SKIPPED 2
+
 #include "anchored_mobs.dm"
 #include "bespoke_id.dm"
 #include "binary_insert.dm"

code/modules/unit_tests/unit_test.dm

@@ -87,6 +87,8 @@ GLOBAL_VAR(test_log)
 			tests_to_run = list(test_to_run)
 			break
 
+	var/list/test_results = list()
+
 	for(var/I in tests_to_run)
 		var/datum/unit_test/test = new I
 
@@ -102,12 +104,19 @@ GLOBAL_VAR(test_log)
 		var/list/log_entry = list("[test.succeeded ? "PASS" : "FAIL"]: [I] [duration / 10]s")
 		var/list/fail_reasons = test.fail_reasons
 
-		qdel(test)
-
 		for(var/J in 1 to LAZYLEN(fail_reasons))
 			log_entry += "\tREASON #[J]: [fail_reasons[J]]"
-		log_test(log_entry.Join("\n"))
+		var/message = log_entry.Join("\n")
+		log_test(message)
+
+		test_results[I] = list("status" = test.succeeded ? UNIT_TEST_PASSED : UNIT_TEST_FAILED, "message" = message, "name" = I)
+
+		qdel(test)
 
 		CHECK_TICK
 
+	var/file_name = "data/unit_tests.json"
+	fdel(file_name)
+	file(file_name) << json_encode(test_results)
+
 	SSticker.force_ending = TRUE