Function renderCozystackExpectError

pkg/engine/render_test.go:6874–6911

renderCozystackExpectError mirrors renderCozystackWith but returns the render error to the caller instead of t.Fatal'ing on it. Used by tests that pin error-message contracts (fail-fast on malformed floatingIP, etc.). On unexpected success the returned error is nil and the caller is responsible for

(t *testing.T, lookup func(string, string, string) (map[string]any, error), overrides map[string]any, talosVersion ...string)

// Variadic talosVersion: defaults to v1.12 (multi-doc path); pass
// "v1.11" or earlier to exercise the legacy network define.
func renderCozystackExpectError(t *testing.T, lookup func(string, string, string) (map[string]any, error), overrides map[string]any, talosVersion ...string) error {
	t.Helper()
	origLookup := helmEngine.LookupFunc
	t.Cleanup(func() { helmEngine.LookupFunc = origLookup })
	helmEngine.LookupFunc = lookup

	chrt, err := loader.LoadDir("../../charts/cozystack")
	if err != nil {
		t.Fatalf("load chart: %v", err)
	}
	values := cloneValues(chrt.Values)
	if v, _ := values["endpoint"].(string); v == "" {
		values["endpoint"] = testEndpoint
	}
	// Seed advertisedSubnets the same way renderChartTemplateWithLookup
	// does — otherwise an error test that targets a deeper validation
	// (e.g. malformed floatingIP) trips the empty-discovery required()
	// guard on advertisedSubnets first and surfaces the wrong error.
	// Callers that want to exercise the required() guard itself
	// override the field explicitly via the `overrides` argument.
	if arr, ok := values["advertisedSubnets"].([]any); !ok || len(arr) == 0 {
		values["advertisedSubnets"] = []any{testAdvertisedSubnet}
	}
	maps.Copy(values, overrides)

	version := "v1.12"
	if len(talosVersion) > 0 && talosVersion[0] != "" {
		version = talosVersion[0]
	}

	eng := helmEngine.Engine{}
	_, err = eng.Render(chrt, chartutil.Values{
		"Values":       values,
		"TalosVersion": version,
	})

	return err //nolint:wrapcheck // surfacing the render error verbatim is the whole point of this helper
}

// renderGenericExpectError is the generic-preset counterpart of
// renderCozystackExpectError. Used by mirror tests that pin the