Route executions through neutral snapshots

parser_test.go

@@ -9,6 +9,7 @@ import (
 	"testing"
 
 	internalcobra "gitea.maximumdirect.net/eric/CommandKit/internal/cobra"
+	commandmeta "gitea.maximumdirect.net/eric/CommandKit/internal/commandmeta"
 )
 
 func TestAppParseUsesRegisteredBindingsWithTheAdapter(t *testing.T) {
@@ -33,7 +34,7 @@ func TestAppParseUsesRegisteredBindingsWithTheAdapter(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	options := internalcobra.ParseOptions{Context: context.Background()}
+	options := commandmeta.ParseOptions{Context: context.Background()}
 	result := app.parse([]string{"config", "show", "one", "--scope", "app"}, options)
 	if result.Failure != nil {
 		t.Fatalf("parse failed: %s", result.Failure.Message)
@@ -47,6 +48,32 @@ func TestAppParseUsesRegisteredBindingsWithTheAdapter(t *testing.T) {
 	}
 }
 
+func TestRoutingSnapshotPairsParsedKeyWithItsRunner(t *testing.T) {
+	command := NewCommand(CommandSpec[struct{}]{Name: "run", Run: func(Invocation, struct{}) Outcome { return Success() }})
+	app, err := New(Identity{Name: "example"}, command)
+	if err != nil {
+		t.Fatal(err)
+	}
+	snapshot := app.routeSnapshot()
+	session := internalcobra.Prepare(snapshot.metadata, commandmeta.ParseOptions{Context: context.Background()})
+	parsed := session.Parse([]string{"run"})
+	if parsed.Failure != nil {
+		t.Fatalf("parse failed: %s", parsed.Failure.Message)
+	}
+	if parsed.Key == 0 || snapshot.runners[parsed.Key] == nil || !snapshot.runners[parsed.Key].hasRun() {
+		t.Fatalf("parsed key %d has no matching runner in its snapshot", parsed.Key)
+	}
+	if app.routeSnapshot() != snapshot {
+		t.Fatal("unchanged registry rebuilt its routing snapshot")
+	}
+	if err := app.Register(NewCommand(CommandSpec[struct{}]{Name: "late"})); err != nil {
+		t.Fatal(err)
+	}
+	if app.routeSnapshot() == snapshot {
+		t.Fatal("successful registration kept stale routing metadata")
+	}
+}
+
 func TestExecutionRefreshesHelpMetadataAfterRegistration(t *testing.T) {
 	first := NewCommand(CommandSpec[struct{}]{
 		Name: "first",