diff --git a/.github/workflows/run_node_tests.yml b/.github/workflows/run_node_tests.yml
index 2661ed5..0b4b9c9 100644
--- a/.github/workflows/run_node_tests.yml
+++ b/.github/workflows/run_node_tests.yml
@@ -7,10 +7,12 @@ jobs:
     runs-on: node
     name: discord bot tests
     steps:
-    - name: checkout
-      uses: actions/checkout@v4
-    - name: install packages
+    - uses: actions/checkout@v4
+    - name: Use Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: 'latest'
+    - name: install dependencies
       run: npm install
     - name: run tests
-      run: npm test 
-
+      run: npm test 
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 845c756..dafc536 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,6 +20,7 @@
         "valid-url": "^1.0.9"
       },
       "devDependencies": {
+        "@types/jest": "^29.5.13",
         "jest": "^29.7.0"
       }
     },
@@ -1422,6 +1423,17 @@
         "@types/istanbul-lib-report": "*"
       }
     },
+    "node_modules/@types/jest": {
+      "version": "29.5.13",
+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-29.5.13.tgz",
+      "integrity": "sha512-wd+MVEZCHt23V0/L642O5APvspWply/rGY5BcW4SUETo2UzPU3Z26qr8jC2qxpimI2jjx9h7+2cj2FwIr01bXg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "expect": "^29.0.0",
+        "pretty-format": "^29.0.0"
+      }
+    },
     "node_modules/@types/node": {
       "version": "22.7.8",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-22.7.8.tgz",
diff --git a/package.json b/package.json
index c559bb1..766016f 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
   "author": "SileNce5k",
   "license": "UNLICENSE",
   "devDependencies": {
+    "@types/jest": "^29.5.13",
     "jest": "^29.7.0"
   }
 }
diff --git a/tests/calculateReloaded.test.js b/tests/calculateReloaded.test.js
new file mode 100644
index 0000000..5b7a5d5
--- /dev/null
+++ b/tests/calculateReloaded.test.js
@@ -0,0 +1,26 @@
+const calculateReloaded = require('../util/calculateReloaded')
+
+let client = {commands: new Map()};
+for(let i = 0; i < 10; i++){
+    client.commands.set(i, i * 420);
+}
+let beforeSizes = [0, 12, 10, 9, 11, 6, 104];
+let expectedResults = [
+    `10 modules were added, and a total of 10 were reloaded.`,
+    `10 modules were reloaded after 2 were disabled.`,
+    `10 modules were reloaded.`,
+    `1 module was added, and a total of 10 were reloaded.`,
+    `10 modules were reloaded after 1 module was deleted.`,
+    `4 modules were added, and a total of 10 were reloaded.`,
+    `10 modules were reloaded after 94 were disabled.`
+]
+
+if(beforeSizes.length != expectedResults.length) throw "Error: beforeSizes and expectedResults are unequal length"
+
+for(let i = 0; i < beforeSizes.length; i++){
+    test('calculateReloaded test', () => {
+        expect(calculateReloaded(beforeSizes[i], client)).toBe(expectedResults[i])
+        
+        });
+
+}