diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a8ebe14..183c352 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,3 +35,4 @@ jobs:
       - name: Lint with ruff
         run: ruff check src/ tests/
       - name: Run tests
+        run: python -m pytest tests/ -v --tb=short
diff --git a/tests/test_ci_workflow.py b/tests/test_ci_workflow.py
new file mode 100644
index 0000000..50c88be
--- /dev/null
+++ b/tests/test_ci_workflow.py
@@ -0,0 +1,17 @@
+import yaml
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_ci_test_step_executes_full_suite():
+    workflow = yaml.safe_load(
+        (ROOT / ".github" / "workflows" / "ci.yml").read_text(encoding="utf-8")
+    )
+    test_steps = workflow["jobs"]["test"]["steps"]
+    run_tests = next(
+        (step for step in test_steps if step.get("name") == "Run tests"),
+        None,
+    )
+    assert run_tests is not None, "CI test job must include a 'Run tests' step"
+    assert run_tests.get("run") == "python -m pytest tests/ -v --tb=short"