diff --git a/test/index.test.ts b/test/index.test.ts
index 3435da0..9bf188d 100644
--- a/test/index.test.ts
+++ b/test/index.test.ts
@@ -2,11 +2,12 @@ import { expect, haveResource } from '@aws-cdk/assert';
 import { Stack } from '@aws-cdk/core';
 import '@aws-cdk/assert/jest';
 import { SopsSecretsManager } from '..';
+import * as secretsManager from '@aws-cdk/aws-secretsmanager';
 
-test('creates-a-provider', () => {
+test('creates a secret, and a custom resource', () => {
     const stack = new Stack();
 
-    new SopsSecretsManager(stack, 'Secret', {
+    const secretValues = new SopsSecretsManager(stack, 'SecretValues', {
         secretName: 'MySecret',
         path: './test/test.yaml',
         kmsKey: undefined,
@@ -19,6 +20,7 @@ test('creates-a-provider', () => {
 
     expect(stack).to(
         haveResource('Custom::SopsSecretsManager', {
+            SecretArn: stack.resolve((secretValues.secret as secretsManager.Secret).secretArn),
             Mappings: '{"mykey":{"path":["a","b"]}}',
         }),
     );
@@ -29,3 +31,35 @@ test('creates-a-provider', () => {
         }),
     );
 });
+
+test('uses a secret, creates a custom resource', () => {
+    const stack = new Stack();
+
+    const secret = new secretsManager.Secret(stack, 'Secret', {
+        secretName: 'MySecret',
+    });
+
+    new SopsSecretsManager(stack, 'SecretValues', {
+        secret,
+        path: './test/test.yaml',
+        kmsKey: undefined,
+        mappings: {
+            mykey: {
+                path: ['a', 'b'],
+            },
+        },
+    });
+
+    expect(stack).to(
+        haveResource('Custom::SopsSecretsManager', {
+            Mappings: '{"mykey":{"path":["a","b"]}}',
+            SecretArn: stack.resolve(secret.secretArn),
+        }),
+    );
+
+    expect(stack).to(
+        haveResource('AWS::SecretsManager::Secret', {
+            Name: 'MySecret',
+        }),
+    );
+});