diff --git a/test/cases/eTag.ts b/test/cases/eTag.ts
index 82976e8..162b205 100644
--- a/test/cases/eTag.ts
+++ b/test/cases/eTag.ts
@@ -1,10 +1,9 @@
 import assert from "assert";
 import { client } from "../utils/httpClient";
 import redis from "../../src/utils/redis";
-import crypto from "crypto";
 import { config } from "../../src/config";
+import { genRandom } from "../utils/getRandom";
 
-const genRandom = (bytes=8) => crypto.pseudoRandomBytes(bytes).toString("hex");
 const validateEtag = (expected: string, actual: string): boolean => {
     const [actualHashType, actualHashKey, actualService] = actual.split(";");
     const [expectedHashType, expectedHashKey, expectedService] = expected.split(";");
diff --git a/test/cases/getHashCache.ts b/test/cases/getHashCache.ts
index 40434e6..ed5bf09 100644
--- a/test/cases/getHashCache.ts
+++ b/test/cases/getHashCache.ts
@@ -3,11 +3,9 @@ import { getHashCache } from "../../src/utils/getHashCache";
 import { shaHashKey } from "../../src/utils/redisKeys";
 import { getHash } from "../../src/utils/getHash";
 import redis from "../../src/utils/redis";
-import crypto from "crypto";
 import assert from "assert";
 import { setTimeout } from "timers/promises";
-
-const genRandom = (bytes=8) => crypto.pseudoRandomBytes(bytes).toString("hex");
+import { genRandom } from "../utils/getRandom";
 
 const rand1Hash = genRandom(24);
 const rand1Hash_Key = getHash(rand1Hash, 1);
diff --git a/test/cases/redisTest.ts b/test/cases/redisTest.ts
index d2f7be4..ba1dd0c 100644
--- a/test/cases/redisTest.ts
+++ b/test/cases/redisTest.ts
@@ -1,9 +1,7 @@
 import { config } from "../../src/config";
 import redis from "../../src/utils/redis";
-import crypto from "crypto";
 import assert from "assert";
-
-const genRandom = (bytes=8) => crypto.pseudoRandomBytes(bytes).toString("hex");
+import { genRandom } from "../utils/getRandom";
 
 const randKey1 = genRandom();
 const randValue1 = genRandom();
diff --git a/test/utils/getRandom.ts b/test/utils/getRandom.ts
new file mode 100644
index 0000000..6ac6437
--- /dev/null
+++ b/test/utils/getRandom.ts
@@ -0,0 +1,3 @@
+import crypto from "crypto";
+
+export const genRandom = (bytes=8) => crypto.pseudoRandomBytes(bytes).toString("hex");