diff --git a/fly-region/README.md b/fly-region/README.md
index 03a3502..6013a79 100644
--- a/fly-region/README.md
+++ b/fly-region/README.md
@@ -63,4 +63,3 @@ module "fly-region" {
 ## Associated template
 
 For a pre-configured Fly.io template, see the Coder template registry.
-
diff --git a/fly-region/main.test.ts b/fly-region/main.test.ts
new file mode 100644
index 0000000..26af776
--- /dev/null
+++ b/fly-region/main.test.ts
@@ -0,0 +1,25 @@
+import { describe, expect, it } from "bun:test";
+import {
+  executeScriptInContainer,
+  runTerraformApply,
+  runTerraformInit,
+  testRequiredVariables,
+} from "../test";
+
+describe("azure-region", async () => {
+  await runTerraformInit(import.meta.dir);
+
+  testRequiredVariables(import.meta.dir, {});
+
+  it("default output", async () => {
+    const state = await runTerraformApply(import.meta.dir, {});
+    expect(state.outputs.value.value).toBe("ams");
+  });
+
+  it("customized default", async () => {
+    const state = await runTerraformApply(import.meta.dir, {
+      default: "atl",
+    });
+    expect(state.outputs.value.value).toBe("atl");
+  });
+});