From 3f2a29899f809e77bc387c986dd9410c09ec426e Mon Sep 17 00:00:00 2001
From: "Michael B. Gale" <mbg@github.com>
Date: Thu, 9 Jul 2026 14:33:36 +0100
Subject: [PATCH] Default to `getEnv` in `setupBaseActionsVars`

---
 src/testing-utils.ts | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/testing-utils.ts b/src/testing-utils.ts
index e78d6a616..ec518853f 100644
--- a/src/testing-utils.ts
+++ b/src/testing-utils.ts
@@ -335,15 +335,11 @@ export type ActionVarOverrides = Partial<
  */
 export function setupBaseActionsVars(
   overrides?: ActionVarOverrides,
-  env?: Env,
+  env: Env = getEnv(),
 ) {
   const vars = { ...DEFAULT_ACTIONS_VARS, ...overrides };
   for (const [key, value] of Object.entries(vars)) {
-    if (env) {
-      env.set(key, value);
-    } else {
-      process.env[key] = value;
-    }
+    env.set(key, value);
   }
 }