diff --git a/src/actions-util.test.ts b/src/actions-util.test.ts
index 71a409da6..ba5591a41 100644
--- a/src/actions-util.test.ts
+++ b/src/actions-util.test.ts
@@ -12,7 +12,7 @@ import {
 import { computeAutomationID } from "./api-client";
 import { EnvVar } from "./environment";
 import { getRunnerLogger } from "./logging";
-import { setupTests } from "./testing-utils";
+import { mockCCR, setupTests } from "./testing-utils";
 import { initializeEnvironment } from "./util";
 
 setupTests(test);
@@ -258,8 +258,8 @@ test("isDynamicWorkflow() returns true if event name is `dynamic`", (t) => {
 });
 
 test("isCCR() returns true when expected", (t) => {
-  process.env.GITHUB_EVENT_NAME = "dynamic";
-  process.env[EnvVar.ANALYSIS_KEY] = "dynamic/copilot-pull-request-reviewer";
+  mockCCR();
+
   t.assert(isCCR());
   t.false(isDefaultSetup());
 });
diff --git a/src/feature-flags.test.ts b/src/feature-flags.test.ts
index ce19a5db3..da4b09719 100644
--- a/src/feature-flags.test.ts
+++ b/src/feature-flags.test.ts
@@ -4,7 +4,6 @@ import * as path from "path";
 import test from "ava";
 
 import * as defaults from "./defaults.json";
-import { EnvVar } from "./environment";
 import {
   Feature,
   featureConfig,
@@ -20,6 +19,7 @@ import {
   getRecordingLogger,
   initializeFeatures,
   LoggedMessage,
+  mockCCR,
   mockCodeQLVersion,
   mockFeatureFlagApiEndpoint,
   setupTests,
@@ -547,8 +547,8 @@ test("initFeatures returns a `Features` instance by default", async (t) => {
 
 test("initFeatures returns an `OfflineFeatures` instance in CCR", async (t) => {
   await withTmpDir(async (tmpDir) => {
-    process.env.GITHUB_EVENT_NAME = "dynamic";
-    process.env[EnvVar.ANALYSIS_KEY] = "dynamic/copilot-pull-request-reviewer";
+    mockCCR();
+
     const features = setUpFeatureFlagTests(tmpDir);
     t.is("OfflineFeatures", features.constructor.name);
   });
diff --git a/src/testing-utils.ts b/src/testing-utils.ts
index aff778043..1f78e5acb 100644
--- a/src/testing-utils.ts
+++ b/src/testing-utils.ts
@@ -14,6 +14,7 @@ import { CachingKind } from "./caching-utils";
 import * as codeql from "./codeql";
 import { Config } from "./config-utils";
 import * as defaults from "./defaults.json";
+import { EnvVar } from "./environment";
 import {
   CodeQLDefaultVersionInfo,
   Feature,
@@ -436,3 +437,9 @@ export function makeTestToken(length: number = 36) {
     "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
   return chars.repeat(Math.ceil(length / chars.length)).slice(0, length);
 }
+
+/** Sets the environment variables needed for isCCR() to be `true`. */
+export function mockCCR() {
+  process.env.GITHUB_EVENT_NAME = "dynamic";
+  process.env[EnvVar.ANALYSIS_KEY] = "dynamic/copilot-pull-request-reviewer";
+}