Add pipeline module registries

internal/framework/pipeline/merger_registry_test.go

@@ -0,0 +1,58 @@
+package pipeline
+
+import (
+	"testing"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+)
+
+func TestMergerRegistryBehavior(t *testing.T) {
+	runRegistryBehaviorTests(t, registryBehaviorCase[contracts.Merger]{
+		name:       "MergerRegistry",
+		key:        "generic-merger",
+		stage:      StageMerge,
+		wrongStage: StageExtract,
+		newRegistry: func() any {
+			return NewMergerRegistry()
+		},
+		register: func(registry any, key string, constructor func() (contracts.Merger, error)) error {
+			return registry.(*MergerRegistry).Register(key, constructor)
+		},
+		registerWithSpec: func(registry any, spec ModuleSpec, constructor func() (contracts.Merger, error)) error {
+			return registry.(*MergerRegistry).RegisterWithSpec(spec, constructor)
+		},
+		build: func(registry any, key string) (contracts.Merger, error) {
+			return registry.(*MergerRegistry).Build(key)
+		},
+		spec: func(registry any, key string) (ModuleSpec, bool) {
+			return registry.(*MergerRegistry).Spec(key)
+		},
+		registeredKeys: func(registry any) []string {
+			return registry.(*MergerRegistry).RegisteredKeys()
+		},
+		nilRegister: func(key string, constructor func() (contracts.Merger, error)) error {
+			var registry *MergerRegistry
+			return registry.Register(key, constructor)
+		},
+		nilBuild: func(key string) (contracts.Merger, error) {
+			var registry *MergerRegistry
+			return registry.Build(key)
+		},
+		nilSpec: func(key string) (ModuleSpec, bool) {
+			var registry *MergerRegistry
+			return registry.Spec(key)
+		},
+		nilRegisteredKey: func() []string {
+			var registry *MergerRegistry
+			return registry.RegisteredKeys()
+		},
+		constructor: func(key string) func() (contracts.Merger, error) {
+			return func() (contracts.Merger, error) {
+				return registryMerger{key: key}, nil
+			}
+		},
+		moduleKey: func(module contracts.Merger) string {
+			return module.Key()
+		},
+	})
+}