internal/util.SetHas(): handle maps of [generic]generic

Make SetHas() a generic function for checking if a map holds a value of
whatever kind for a key of some comparable kind.

Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>

internal/util/util.go

@@ -98,7 +98,7 @@ func ExportFromReader(input io.Reader, opts define.BuildOutputOption) error {
 	return nil
 }
 
-func SetHas(m map[string]struct{}, k string) bool {
+func SetHas[K comparable, V any](m map[K]V, k K) bool {
 	_, ok := m[k]
 	return ok
 }

internal/util/util_test.go

@@ -0,0 +1,15 @@
+package util
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSetHas(t *testing.T) {
+	m := map[string]string{
+		"key1": "ignored",
+	}
+	assert.True(t, SetHas(m, "key1"))
+	assert.False(t, SetHas(m, "key2"))
+}