feat(adapter): registry with detect filtering and duplicate guard

internal/adapter/adapter_test.go

@@ -3,6 +3,7 @@ package adapter
 import (
 	"testing"
 
+	"github.com/lukaszraczylo/harness-sync/internal/canonical"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -23,3 +24,37 @@ func TestKindString(t *testing.T) {
 	assert.Equal(t, "rendered", RenderedFile.String())
 	assert.Equal(t, "symlink-file", SymlinkFile.String())
 }
+
+type fakeAdapter struct {
+	name   string
+	detect bool
+}
+
+func (f *fakeAdapter) Name() string                                 { return f.name }
+func (f *fakeAdapter) Detect() bool                                 { return f.detect }
+func (f *fakeAdapter) Render(_ *canonical.Bundle) (*FileSet, error) { return NewFileSet(), nil }
+func (f *fakeAdapter) Import(_ string) (*ImportResult, error)       { return &ImportResult{}, nil }
+
+func TestRegistry(t *testing.T) {
+	r := NewRegistry()
+	a := &fakeAdapter{name: "a", detect: true}
+	b := &fakeAdapter{name: "b", detect: false}
+	r.Register(a)
+	r.Register(b)
+
+	assert.Equal(t, []string{"a", "b"}, r.Names())
+	assert.Equal(t, []string{"a"}, r.DetectedNames())
+
+	got, ok := r.Get("a")
+	assert.True(t, ok)
+	assert.Equal(t, "a", got.Name())
+
+	_, ok = r.Get("missing")
+	assert.False(t, ok)
+}
+
+func TestRegistryDuplicatePanics(t *testing.T) {
+	r := NewRegistry()
+	r.Register(&fakeAdapter{name: "x"})
+	assert.Panics(t, func() { r.Register(&fakeAdapter{name: "x"}) })
+}