diff --git a/tests/local.ts b/tests/local.ts
new file mode 100644
index 000000000..d082ded2c
--- /dev/null
+++ b/tests/local.ts
@@ -0,0 +1,9 @@
+import { snowflakeToBigint } from "../mod.ts";
+import { assertEquals } from "./deps.ts";
+
+Deno.test("[Local Test] - snowflakeToBigint ", async (t) => {
+  const text = "130136895395987456";
+  const big = 130136895395987456n;
+
+  assertEquals(big, snowflakeToBigint(text));
+});
diff --git a/tests/mod.ts b/tests/mod.ts
index 1cec02828..9edc11c8e 100644
--- a/tests/mod.ts
+++ b/tests/mod.ts
@@ -5,6 +5,9 @@ import { deleteMessageWithReasonTest } from "./messages/deleteMessage.ts";
 import { deleteMessageWithoutReasonTest } from "./messages/deleteMessage.ts";
 import { delayUntil } from "./utils.ts";
 
+// CONDUCT LOCAL TESTS FIRST BEFORE RUNNING API TEST
+import "./local.ts";
+
 Deno.test("[Bot] - Starting Tests", async (t) => {
   let startedAt = 0;
   const bot = createBot({