diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..a4ff987
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,67 @@
+name: CI
+
+on:
+  pull_request:
+
+concurrency:
+  group: ci-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  lint-format:
+    name: Check linting and formatting
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
+        with:
+          fetch-depth: 0
+
+      - name: pip update
+        run: python -m pip install --upgrade pip
+
+      - name: Install dependencies
+        run: python -m pip install build setuptools_scm[toml]
+
+      - name: Install dependencies
+        run: python -m pip install .[dev]
+
+      - name: Lint
+        run: python -m ruff .
+
+      - name: Check format
+        run: python -m ruff format .
+
+      - name: Check Diff
+        run: |
+          DIFF="$(git diff --name-only)"
+
+          if [ -z "$DIFF" ]; then
+            echo "OK: Format is clean"
+          else
+            echo "Error: Format was not clean"
+            echo "List of files:"
+            echo "$DIFF"
+            git diff
+            exit 1
+          fi
+
+  build-test:
+    name: Build and test Python
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
+        with:
+          fetch-depth: 0
+
+      - name: pip update
+        run: python -m pip install --upgrade pip
+
+      - name: Install dependencies
+        run: python -m pip install build setuptools_scm[toml]
+
+      - name: Install dependencies
+        run: python -m pip install .[tests]
+
+      - name: Run tests
+        run: python -m pytest tests
+
diff --git a/src/armonik_cli/admin.py b/src/armonik_cli/admin.py
index 7d307c4..154818c 100644
--- a/src/armonik_cli/admin.py
+++ b/src/armonik_cli/admin.py
@@ -145,7 +145,7 @@ def list_results(client: ArmoniKResults, result_filter: Filter):
     results = client.list_results(result_filter, page=page)
     while len(results[1]) > 0:
         for result in results[1]:
-            print(f'Result ID: {result.result_id}')
+            print(f'Result ID: {result}')
         page += 1
         results = client.list_results(result_filter, page=page)
 
@@ -175,6 +175,9 @@ def get_task_durations(client: ArmoniKTasks, task_filter: Filter):
     for partition, duration in durations.items():
         print(f"Partition: {partition} = {duration} secondes")
 
+def hello():
+    return "Hello, World!"
+
 
 def main():
 
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/unit/test_hello.py b/tests/unit/test_hello.py
new file mode 100644
index 0000000..ddae264
--- /dev/null
+++ b/tests/unit/test_hello.py
@@ -0,0 +1,4 @@
+from armonik_cli.admin import hello
+
+def test_hello():
+    assert hello() == "Hello, World!"