fix(test): escape regex special characters in momus test file path

imarshallwidjaja · sisyphus-dev-ai · imarshallwidjaja · commit 49555caf0560 · 2026-01-11T00:12:26.000+11:00
Escape regex special characters when building RegExp from file path in
momus.test.ts. The `.` characters in ".sisyphus/plans/plan.md" were matching
any character instead of literal dots.

Added escapeRegExp() helper and applied it when constructing the regex pattern.
All tests pass.

Co-Authored-By: Sisyphus &lt;sisyphus@mengmota.com&gt;
diff --git a/src/agents/momus.test.ts b/src/agents/momus.test.ts
@@ -1,6 +1,10 @@
 import { describe, test, expect } from "bun:test"
 import { MOMUS_SYSTEM_PROMPT } from "./momus"
 
+function escapeRegExp(value: string) {
+  return value.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")
+}
+
 describe("MOMUS_SYSTEM_PROMPT policy requirements", () => {
   test("should treat SYSTEM DIRECTIVE as ignorable/stripped", () => {
     // #given
@@ -30,7 +34,10 @@ describe("MOMUS_SYSTEM_PROMPT policy requirements", () => {
     // #when / #then
     // In RED phase, this will FAIL because current prompt explicitly lists this as INVALID
     const invalidExample = "Please review .sisyphus/plans/plan.md"
-    const rejectionTeaching = new RegExp(`reject.*${invalidExample}`, "i")
+    const rejectionTeaching = new RegExp(
+      `reject.*${escapeRegExp(invalidExample)}`,
+      "i",
+    )
     
     // We want the prompt to NOT reject this anymore. 
     // If it's still in the "INVALID" list, this test should fail.
