testing: use testing.Start as app starter

common/common.go

@@ -9,11 +9,15 @@ type Config interface {
 
 type Services map[string]Context
 
+type ContextState interface{}
+
 type Context interface {
 	Config() Config
 	Parent() Context
 	Services() Services
 	ChildContext(Config) Context
+	State() ContextState
+	WithState(ContextState) Context
 }
 
 type StartFct = func(Context)
@@ -24,6 +28,7 @@ type context struct {
 	cfg      Config
 	parent   Context
 	children []Context
+	state    ContextState
 }
 
 func (ctx *context) Config() Config {
@@ -45,8 +50,20 @@ func (ctx *context) ChildContext(cfg Config) Context {
 	return cctx
 }
 
+func (ctx *context) State() ContextState {
+	return ctx.state
+}
+
+func (ctx *context) WithState(state ContextState) Context {
+	ctx.state = state
+	return ctx
+}
+
 func makeCtx(cfg Config, parent Context) *context {
-	return &context{cfg, parent, nil}
+	return &context{
+		cfg:    cfg,
+		parent: parent,
+	}
 }
 
 // top-level application context

testing/testing.go

@@ -6,9 +6,16 @@ import (
 	"regexp"
 	"testing"
 
+	"git.sr.ht/~cco/go-scopes"
 	"git.sr.ht/~cco/go-scopes/common"
 )
 
+func Start(ctx common.Context) {
+	scopes.Start(ctx)
+}
+
+// definitions
+
 type Map map[string]interface{}
 
 type T struct {

tests/etc/etc.go

@@ -4,13 +4,14 @@ import (
 	"git.sr.ht/~cco/go-scopes"
 	"git.sr.ht/~cco/go-scopes/common"
 	"git.sr.ht/~cco/go-scopes/config"
+	"git.sr.ht/~cco/go-scopes/testing"
 )
 
 func Config() common.Config {
 	ovr := Overrides().Use
 	b := config.MakeBase
 	cfg := scopes.Cfg{
-		Base:    b("dummy", scopes.Start),
+		Base:    b("testing", testing.Start),
 		Home:    ovr(".", HOME),
 		AppType: "standard",
 	}

tests/scopes_test.go

@@ -15,7 +15,7 @@ func TestConfig(tb *tbase.T) {
 
 func ConfigTest(t *testing.T) {
 	cfg := etc.Config()
-	t.AssertEqual(cfg.Name(), "dummy")
+	t.AssertEqual(cfg.Name(), "testing")
 	appCfg := cfg.(*scopes.Cfg)
 	t.AssertEqual(appCfg.Home, "tests")
 	confCtx := t.Ctx.Services()["config"]