Compile typed command runners

execute_external_test.go

@@ -60,6 +60,25 @@ func TestExecuteRunsTypedCommandsWithFreshInvocationState(t *testing.T) {
 	}
 }
 
+func TestOmittedInputFactoryUsesExactPointerZeroValue(t *testing.T) {
+	command := commandkit.NewCommand(commandkit.CommandSpec[*int]{
+		Name: "run",
+		Run: func(_ commandkit.Invocation, value *int) commandkit.Outcome {
+			if value != nil {
+				return commandkit.Failure(errors.New("omitted input factory allocated a pointer"))
+			}
+			return commandkit.Success()
+		},
+	})
+	app, err := commandkit.New(commandkit.Identity{Name: "example"}, command)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if outcome := app.Execute(context.Background(), []string{"run"}, commandkit.Streams{}); outcome.Kind != commandkit.OutcomeSuccess {
+		t.Fatalf("pointer zero value outcome = %#v", outcome)
+	}
+}
+
 func TestExecuteUsesFreshSessionForHelpAfterFlagBearingInvocation(t *testing.T) {
 	type input struct {
 		name    commandkit.Supplied[string]