Add test for vat.ProtoFromModule.

vat/util_test.go

@@ -0,0 +1,46 @@
+package vat_test
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	"github.com/tetratelabs/wazero"
+	wasi "github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
+	"github.com/wetware/go/system"
+	"github.com/wetware/go/vat"
+)
+
+func TestProtoFromModule(t *testing.T) {
+	t.Parallel()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	r := wazero.NewRuntime(ctx)
+	defer r.Close(ctx)
+
+	wasi.MustInstantiate(ctx, r)
+
+	sys, err := system.Builder{}.Instantiate(ctx, r)
+	require.NoError(t, err)
+	defer sys.Close(ctx)
+
+	b, err := os.ReadFile("testdata/socket/main.wasm")
+	require.NoError(t, err)
+
+	cm, err := r.CompileModule(ctx, b)
+	require.NoError(t, err)
+	defer cm.Close(ctx)
+
+	mod, err := r.InstantiateModule(ctx, cm, wazero.NewModuleConfig().
+		WithName("test"))
+	require.NoError(t, err)
+	defer mod.Close(ctx)
+
+	require.Equal(t,
+		filepath.Join(vat.Proto, "test"),
+		string(vat.ProtoFromModule(mod)))
+}