refactor: wire shared Instance dependencies at startup

cmd/config_test.go

@@ -0,0 +1,56 @@
+/*
+Copyright 2026.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package main
+
+import (
+	"flag"
+	"io"
+	"testing"
+)
+
+const testAddressFlag = "--openbao-address=http://bao:8200"
+
+func TestDependencyConfigurationFailsBeforeAssembly(t *testing.T) {
+	for _, args := range [][]string{
+		{},
+		{testAddressFlag},
+		{testAddressFlag, "--openbao-auth-role=controller", "--reconcile-timeout=0s"},
+	} {
+		var options dependencyOptions
+		flags := flag.NewFlagSet("test", flag.ContinueOnError)
+		flags.SetOutput(io.Discard)
+		options.bindFlags(flags)
+		if err := flags.Parse(args); err != nil {
+			t.Fatal(err)
+		}
+		if _, err := options.credentials(); err == nil {
+			t.Fatal("invalid configuration was accepted")
+		}
+	}
+}
+
+func TestAssemblyDoesNotRequireLiveDependenciesOrTenantConfiguration(t *testing.T) {
+	var options dependencyOptions
+	flags := flag.NewFlagSet("test", flag.ContinueOnError)
+	options.bindFlags(flags)
+	if err := flags.Parse([]string{testAddressFlag, "--openbao-auth-role=controller"}); err != nil {
+		t.Fatal(err)
+	}
+	if _, err := options.credentials(); err != nil {
+		t.Fatal(err)
+	}
+}