package constants import ( "testing" "github.com/stretchr/testify/assert" ) func TestNullUUID(t *testing.T) { expected := "00000000-0000-0000-0000-000000000000" assert.Equal(t, expected, NullUUID().String(), "Null UUID should be deterministic") assert.Equal(t, NullUUID(), NullUUID(), "Equality verification") }