diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000000..78a8d8eb81
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,23 @@
+name: ci
+
+on:
+  pull_request:
+    branches: [main]
+
+jobs:
+  tests:
+    name: Tests
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.25.1"
+
+      - name: Run Tests with Coverage
+        run: go test -cover ./...
+
diff --git a/README.md b/README.md
index c2bec0368b..bd0ca2d11d 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+![CI Tests](https://github.com/JulianaTrombetta/learn-cicd-starter/actions/workflows/ci.yml/badge.svg)
+
 # learn-cicd-starter (Notely)
 
 This repo contains the starter code for the "Notely" application for the "Learn CICD" course on [Boot.dev](https://boot.dev).
@@ -21,3 +23,7 @@ go build -o notely && ./notely
 *This starts the server in non-database mode.* It will serve a simple webpage at `http://localhost:8080`.
 
 You do *not* need to set up a database or any interactivity on the webpage yet. Instructions for that will come later in the course!
+
+Juliana_Trombetta's version of Boot.dev's Notely app.
+
+Juliana_Trombetta's version of Boot.dev's Notely app.
diff --git a/internal/auth/auth_test.go b/internal/auth/auth_test.go
new file mode 100644
index 0000000000..79de6cc5c0
--- /dev/null
+++ b/internal/auth/auth_test.go
@@ -0,0 +1,31 @@
+package auth
+
+import (
+	"net/http"
+	"testing"
+)
+
+// Example test for a valid header
+func TestGetAPIKeyValid(t *testing.T) {
+	headers := http.Header{}
+	headers.Set("Authorization", "ApiKey my-secret-key")
+
+	key, err := GetAPIKey(headers)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+        if key != "my-secret-key" {
+		t.Fatalf("expected 'my-secret-key', got %s", key)
+	}
+}
+
+// Example test for a missing header
+func TestGetAPIKeyMissing(t *testing.T) {
+	headers := http.Header{}
+
+	_, err := GetAPIKey(headers)
+	if err == nil {
+		t.Fatalf("expected error when Authorization header is missing")
+	}
+}
+