Bind companion inputs to the main context

2026-11-09 18:45:00 +00:00
parent 0a136063da
commit f0a4bf9bb2
6 changed files with 112 additions and 8 deletions
--- a/facade_main_relative_test.go
+++ b/facade_main_relative_test.go
@@ -0,0 +1,70 @@
+package configkit_test
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+	"testing/fstest"
+
+	configkit "go.maximumdirect.net/configkit"
+)
+
+func TestMainRelativeCompanion(t *testing.T) {
+	dir := t.TempDir()
+	if err := os.WriteFile(filepath.Join(dir, "main.yml"), []byte("count: 3\n"), 0600); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "extra.yml"), []byte("settings: {companion: host}\n"), 0600); err != nil {
+		t.Fatal(err)
+	}
+	binding := configkit.MainRelative()
+	companion := configkit.Input{Source: configkit.Bytes("companions", []byte("config: {imports: [{path: extra.yml}]}\n")), Imports: true, MainRelative: binding}
+	result, err := configkit.LoadLayered(configkit.Input{Source: configkit.File(filepath.Join(dir, "main.yml"))}, configkit.LayeredOptions[layeredFacadeConfig]{Underlays: []configkit.Underlay{{Inputs: []configkit.Input{companion}}}})
+	if err != nil {
+		t.Fatalf("%v: %#v", err, err.(*configkit.LoadError).Diagnostics())
+	}
+	if result.Config.Count != 3 || result.Config.Settings["companion"] != "host" {
+		t.Fatalf("configuration = %#v", result.Config)
+	}
+	native := configkit.NewFilesystem("bundle", fstest.MapFS{"dir/main.yml": &fstest.MapFile{Data: []byte("count: 4\n")}, "dir/extra.yml": &fstest.MapFile{Data: []byte("settings: {companion: native}\n")}})
+	result, err = configkit.LoadLayered(configkit.Input{Source: native.File("dir/main.yml")}, configkit.LayeredOptions[layeredFacadeConfig]{Underlays: []configkit.Underlay{{Inputs: []configkit.Input{companion}}}})
+	if err != nil {
+		t.Fatalf("%v: %#v", err, err.(*configkit.LoadError).Diagnostics())
+	}
+	if result.Config.Count != 4 || result.Config.Settings["companion"] != "native" {
+		t.Fatalf("configuration = %#v", result.Config)
+	}
+}
+
+func TestMainRelativeContextSelection(t *testing.T) {
+	root := t.TempDir()
+	base := filepath.Join(root, "main")
+	if err := os.Mkdir(base, 0700); err != nil {
+		t.Fatal(err)
+	}
+	for path, value := range map[string]string{"main/main.yml": "count: 1\n", "main/extra.yml": "settings: {value: derived}\n", "extra.yml": "settings: {value: fallback}\n"} {
+		if err := os.WriteFile(filepath.Join(root, path), []byte(value), 0600); err != nil {
+			t.Fatal(err)
+		}
+	}
+	link := filepath.Join(root, "link.yml")
+	if err := os.Symlink(filepath.Join(base, "main.yml"), link); err != nil {
+		t.Fatal(err)
+	}
+	companion := configkit.Input{Source: configkit.Bytes("companion", []byte("config: {imports: [{path: extra.yml}]}\n")), Imports: true, MainRelative: &configkit.MainRelativeContext{Fallback: &configkit.FilesystemContext{Root: root, BaseDir: root}}}
+	opts := configkit.LayeredOptions[layeredFacadeConfig]{Underlays: []configkit.Underlay{{Inputs: []configkit.Input{companion}}}}
+	result, err := configkit.LoadLayered(configkit.Input{Source: configkit.File(link), Filesystem: &configkit.FilesystemContext{Root: root}}, opts)
+	if err != nil {
+		t.Fatalf("%v: %#v", err, err.(*configkit.LoadError).Diagnostics())
+	}
+	if got := result.Config.Settings["value"]; got != "derived" {
+		t.Fatalf("derived value = %q", got)
+	}
+	result, err = configkit.LoadLayered(configkit.Input{Source: configkit.NoSource()}, opts)
+	if err != nil {
+		t.Fatalf("%v: %#v", err, err.(*configkit.LoadError).Diagnostics())
+	}
+	if got := result.Config.Settings["value"]; got != "fallback" {
+		t.Fatalf("fallback value = %q", got)
+	}
+}