diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index eb8d484..b03a986 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -6,37 +6,8 @@ To create a new module, clone this repository and run:
 ./new.sh MOUDLE_NAME
 ```
 
-Test a module by running an instance of Coder on your local machine:
-
-```shell
-coder server --in-memory
-```
-
-This will create a new module in the modules directory with the given name and scaffolding.
-Edit the files, adding your module's implementation, documentation and screenshots.
-
 ## Testing a Module
 
-Create a template and edit it to include your development module:
-
-> [!NOTE]
-> The Docker starter template is recommended for quick-iteration!
-
-```hcl
-module "MOUDLE_NAME" {
-    source = "/home/user/coder/modules/MOUDLE_NAME"
-}
-```
-
-You can also test your module by specifying the source as a git repository:
-
-```hcl
-module "MOUDLE_NAME" {
-    source = "git::https://github.com/<USERNAME>/<REPO>.git//<FOLDER>?ref=<BRANCH>"
-}
-```
-
-Build a workspace and your module will be consumed! 🥳
+A suite of test-helpers exists to run `terraform apply` on modules with variables, and test script output against containers.
 
-Open a pull-request with your module, a member of the Coder team will
-manually test it, and after-merge it will appear on the Registry.
+Reference existing `*.test.ts` files for implementation.
diff --git a/aws-region/main.test.ts b/aws-region/main.test.ts
new file mode 100644
index 0000000..f943f94
--- /dev/null
+++ b/aws-region/main.test.ts
@@ -0,0 +1,25 @@
+import { describe, expect, it } from "bun:test";
+import {
+  executeScriptInContainer,
+  runTerraformApply,
+  runTerraformInit,
+  testRequiredVariables,
+} from "../test";
+
+describe("aws-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("us-east-1");
+  });
+
+  it("customized default", async () => {
+    const state = await runTerraformApply(import.meta.dir, {
+      default: "us-west-2",
+    });
+    expect(state.outputs.value.value).toBe("us-west-2");
+  });
+});
diff --git a/test.ts b/test.ts
index cc43018..b4c384f 100644
--- a/test.ts
+++ b/test.ts
@@ -74,6 +74,12 @@ export const execContainer = async (
 };
 
 export interface TerraformState {
+  outputs: {
+    [key: string]: {
+      type: string;
+      value: any;
+    };
+  }
   resources: [
     {
       type: string;