diff --git a/.npmignore b/.npmignore
index bd2bb48..42d1c3a 100644
--- a/.npmignore
+++ b/.npmignore
@@ -1,5 +1,5 @@
 __tests__
-test-package
+__test_package__
 .github
 coverage
 tmp
diff --git a/test-package/functions.js b/__test_package__/functions.js
similarity index 66%
rename from test-package/functions.js
rename to __test_package__/functions.js
index 1a42ca6..7871449 100644
--- a/test-package/functions.js
+++ b/__test_package__/functions.js
@@ -11,7 +11,9 @@ function testEncryptAndDigest(encryptAndDigest) {
     hmacSecret,
     encryptionKey
   });
-  assert.ok(result);
+  assert.ok(result, "nothing returned from package");
+  assert.ok(result.digest.length > 0, 'no digest returned from package');
+  assert.ok(result.payload.length > 0, 'no payload returned from package');
 }
 
 module.exports = {
diff --git a/test-package/index.js b/__test_package__/index.js
similarity index 97%
rename from test-package/index.js
rename to __test_package__/index.js
index 9dc5f7f..e2d3c65 100644
--- a/test-package/index.js
+++ b/__test_package__/index.js
@@ -84,13 +84,13 @@ function pack () {
 }
 
 /**
- * Run `npm i`
+ * Run `npm i --production=true`
  * @returns Promise that resolves on success, rejects with msg on error
  */
 function install () {
   console.log('--- install ---');
   return new Promise((resolve, reject) => {
-    const install = spawn('npm', ['i'], {
+    const install = spawn('npm', ['i', '--production=true'], {
       cwd: `${localNodeModulesPath}/package`
     });
     install.on('close', installCode => {
diff --git a/test-package/package.json b/__test_package__/package.json
similarity index 100%
rename from test-package/package.json
rename to __test_package__/package.json
diff --git a/test-package/test-import.cjs b/__test_package__/test-import.cjs
similarity index 100%
rename from test-package/test-import.cjs
rename to __test_package__/test-import.cjs
diff --git a/test-package/test-import.mjs b/__test_package__/test-import.mjs
similarity index 100%
rename from test-package/test-import.mjs
rename to __test_package__/test-import.mjs
diff --git a/test-package/test-require.cjs b/__test_package__/test-require.cjs
similarity index 100%
rename from test-package/test-require.cjs
rename to __test_package__/test-require.cjs
diff --git a/lib/helpers.js b/lib/helpers.js
index c755e89..f8b79e5 100644
--- a/lib/helpers.js
+++ b/lib/helpers.js
@@ -31,8 +31,9 @@ export function encryptAndDigest (input, options) {
 export function decryptAndTest (originalDigest, encryptedInput, options) {
   const decrypted = symmetricDecrypt(encryptedInput, options);
   const digest = generateHmac(decrypted, options);
+  const ok = originalDigest && digest && digest === originalDigest;
   return {
-    ok: digest === originalDigest,
+    ok,
     decrypted
   };
 }
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index bed1ba3..5b36092 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,22 +1,22 @@
 {
   "name": "@localnerve/hmac-symmetric",
-  "version": "0.1.0",
+  "version": "0.3.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "@localnerve/hmac-symmetric",
-      "version": "0.1.0",
+      "version": "0.3.1",
       "license": "BSD-3-Clause",
       "devDependencies": {
-        "@babel/cli": "^7.22.10",
-        "@babel/preset-env": "^7.22.14",
+        "@babel/cli": "^7.22.15",
+        "@babel/preset-env": "^7.22.15",
         "cross-env": "^7.0.3",
         "eslint": "^8.48.0",
-        "glob": "^10.3.3",
+        "glob": "^10.3.4",
         "jest": "^29.6.4",
         "rimraf": "^5.0.1",
-        "tar": "^6.1.15"
+        "tar": "^6.2.0"
       },
       "engines": {
         "node": ">= 16"
diff --git a/package.json b/package.json
index 6ed8d02..420a750 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@localnerve/hmac-symmetric",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "A library to generate hmac and symmetrically encrypted payloads",
   "main": "index.js",
   "type": "module",
@@ -18,7 +18,7 @@
     "transpile": "babel lib -d cjs --out-file-extension .cjs",
     "posttranspile": "node posttranspile.js",
     "test": "cross-env HS_HMAC_SECRET=deadbeef HS_ENCRYPTION_KEY=56c6a9c6fb56a39e05fb993918ab01dda24439e2658dd7b06aa0f8fcc7fe0627 jest && npm run test-package",
-    "test-package": "node ./test-package/index.js"
+    "test-package": "node ./__test_package__/index.js"
   },
   "repository": {
     "type": "git",
@@ -44,14 +44,14 @@
   },
   "homepage": "https://github.com/localnerve/hmac-symmetric#readme",
   "devDependencies": {
-    "@babel/cli": "^7.22.10",
-    "@babel/preset-env": "^7.22.14",
+    "@babel/cli": "^7.22.15",
+    "@babel/preset-env": "^7.22.15",
     "cross-env": "^7.0.3",
     "rimraf": "^5.0.1",
     "jest": "^29.6.4",
     "eslint": "^8.48.0",
-    "tar": "^6.1.15",
-    "glob": "^10.3.3"
+    "tar": "^6.2.0",
+    "glob": "^10.3.4"
   },
   "engines": {
     "node": ">= 16"
diff --git a/test-package/public/images/1997805.png b/test-package/public/images/1997805.png
deleted file mode 100644
index c8318b3..0000000
Binary files a/test-package/public/images/1997805.png and /dev/null differ