tests: add test for run-time error in the non-first case

tests/error/runtime_error_recursion_limit_middle_test/expected_results.json

@@ -0,0 +1,17 @@
+{
+  "version": 2,
+  "status": "fail",
+  "tests": [
+    {
+      "name": "identity function of 1",
+      "status": "pass",
+      "output": ""
+    },
+    {
+      "name": "identity function of 2",
+      "status": "error",
+      "message": "Traceback (most recent call last)\n/nim/lib/pure/unittest.nim(654) test_identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\n(1874 calls omitted) ...\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim(3) identity\nidentity.nim identity\nError: call depth limit reached in a debug build (2000 function calls). You can change it with -d:nimCallDepthLimit=<int> but really try to avoid deep recursions instead.\n",
+      "output": ""
+    }
+  ]
+}

tests/error/runtime_error_recursion_limit_middle_test/identity.nim

@@ -0,0 +1,5 @@
+func identity*(n: int): int =
+  if n == 2:
+    identity(n)
+  else:
+    n

tests/error/runtime_error_recursion_limit_middle_test/test_identity.nim

@@ -0,0 +1,12 @@
+import std/unittest
+import identity
+
+suite "Identity Function":
+  test "identity function of 1":
+    check identity(1) == 1
+
+  test "identity function of 2":
+    check identity(2) == 2
+
+  test "identity function of 3":
+    check identity(3) == 3