From 9e14abaac7e432319f217cc6b8e17ccbe840720f Mon Sep 17 00:00:00 2001
From: Ivan Levkivskyi <levkivskyi@gmail.com>
Date: Fri, 26 Aug 2022 16:12:23 +0100
Subject: [PATCH] Fix error codes option serialization (#13523)

Fixes #13521
---
 mypy/options.py                       |  4 ++--
 test-data/unit/check-incremental.test | 10 ++++++++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/mypy/options.py b/mypy/options.py
index 6babd0f028d1..fb7bb8e43bbb 100644
--- a/mypy/options.py
+++ b/mypy/options.py
@@ -456,7 +456,7 @@ def select_options_affecting_cache(self) -> Mapping[str, object]:
         result: Dict[str, object] = {}
         for opt in OPTIONS_AFFECTING_CACHE:
             val = getattr(self, opt)
-            if isinstance(val, set):
-                val = sorted(val)
+            if opt in ("disabled_error_codes", "enabled_error_codes"):
+                val = sorted([code.code for code in val])
             result[opt] = val
         return result
diff --git a/test-data/unit/check-incremental.test b/test-data/unit/check-incremental.test
index 599b00dabe3d..bf011140df86 100644
--- a/test-data/unit/check-incremental.test
+++ b/test-data/unit/check-incremental.test
@@ -6012,3 +6012,13 @@ foo(name='Jennifer', age="38")
 [out]
 [out2]
 tmp/m.py:2: error: Argument "age" to "foo" has incompatible type "str"; expected "int"
+
+[case testDisableEnableErrorCodesIncremental]
+# flags: --disable-error-code truthy-bool
+# flags2: --enable-error-code truthy-bool
+def foo() -> int: ...
+if foo:
+    ...
+[out]
+[out2]
+main:4: error: Function "Callable[[], int]" could always be true in boolean context