mesh-host/internal/system/shapes_test.go

package system

import (
	"testing"

	"git.novox.be/novox/mesh-sdk/go/declaration"
)

// Every shape in the vocabulary is implemented by a host that claims to do everything.
//
// **Added because adding a shape and forgetting this was silent here and loud there.** The
// `network` shape parsed, validated, applied and removed, and a full host still refused every
// declaration containing one — correctly, because it does not do half a declaration. The count
// test above passed throughout: it checks what the language has, not what a host can do.
func TestAFullHostImplementsEveryShapeTheLanguageHas(t *testing.T) {
	does := map[declaration.Type]bool{}
	for _, s := range All() {
		if s.Name() != "arch" {
			continue
		}
		for _, shape := range s.Shapes() {
			does[shape] = true
		}
	}
	for _, shape := range declaration.Vocabulary() {
		if !does[shape] {
			t.Errorf("the language has %q and a full host cannot apply it, so every declaration "+
				"carrying one is refused whole", shape)
		}
	}
}