From 429869bef8076bfd86fc578e786a407437fae032 Mon Sep 17 00:00:00 2001
From: froppa <5844892+froppa@users.noreply.github.com>
Date: Mon, 21 Sep 2026 14:39:16 +0200
Subject: [PATCH] Struktly: Add internal/struktly/policy/checker_test.go
 covering Load and Check

---
 internal/struktly/policy/checker_test.go | 46 ++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 internal/struktly/policy/checker_test.go

diff --git a/internal/struktly/policy/checker_test.go b/internal/struktly/policy/checker_test.go
new file mode 100644
index 0000000..144ddd6
--- /dev/null
+++ b/internal/struktly/policy/checker_test.go
@@ -0,0 +1,46 @@
+package policy
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/froppa/stackkit/internal/struktly/ir"
+	"github.com/stretchr/testify/require"
+)
+
+const fixture = `max_handlers: 2
+required:
+  - tests
+`
+
+// loadFixture writes the policy fixture into a temp dir and loads it with Load.
+func loadFixture(t *testing.T) *Policy {
+	t.Helper()
+	path := filepath.Join(t.TempDir(), "policy.yaml")
+	require.NoError(t, os.WriteFile(path, []byte(fixture), 0o600))
+
+	p, err := Load(path)
+	require.NoError(t, err)
+	require.Equal(t, 2, p.MaxHandlers)
+	require.Equal(t, []string{"tests"}, p.Required)
+	return p
+}
+
+func TestCheckWithinLimit(t *testing.T) {
+	p := loadFixture(t)
+
+	for _, n := range []int{1, 2} {
+		svc := &ir.Service{Name: "svc", Handlers: make([]ir.Handler, n)}
+		require.NoError(t, Check(p, svc), "handlers=%d", n)
+	}
+}
+
+func TestCheckTooManyHandlers(t *testing.T) {
+	p := loadFixture(t)
+	svc := &ir.Service{Name: "svc", Handlers: make([]ir.Handler, 3)}
+
+	err := Check(p, svc)
+	require.Error(t, err)
+	require.ErrorContains(t, err, "policy violation: too many handlers")
+}