fix(09): WR-07 keep relation column order from the YAML itself, not a fixed indentation

modules/cabana/relation_test.go

@@ -115,6 +115,77 @@ func TestRelationDefaultSort(t *testing.T) {
 	}
 }
 
+// TestRelationColumnOrderIsIndependentOfIndentation pins WR-07: column order
+// is the file's order in each panel, whatever the indentation, and the view and
+// manage panels do not share one order.
+func TestRelationColumnOrderIsIndependentOfIndentation(t *testing.T) {
+	const twoSpace = `editors:
+  label: demo.editors
+  view:
+    list:
+      columns:
+        username:
+          label: demo.username
+        email:
+          label: demo.email
+    toolbarButtons: link|unlink
+  manage:
+    list:
+      columns:
+        username:
+          label: demo.username
+        email:
+          label: demo.email
+`
+	for name, yamlText := range map[string]string{"two-space": twoSpace, "four-space": validRelationYAML} {
+		t.Run(name, func(t *testing.T) {
+			ctl := relationTestController{}
+			fsys := relationTestFS(yamlText)
+			form, err := CompileForm("acme.demo", ctl, fsys)
+			if err != nil {
+				t.Fatal(err)
+			}
+			relations, err := compileRelations("acme.demo", ctl, fsys, form)
+			if err != nil {
+				t.Fatal(err)
+			}
+			schema := relations["editors"].Schema
+			for panel, cols := range map[string][]RelationColumn{"view": schema.View.List.Columns, "manage": schema.Manage.List.Columns} {
+				if len(cols) != 2 || cols[0].Key != "username" || cols[1].Key != "email" {
+					t.Fatalf("%s columns = %+v, want username then email (file order, not alphabetical)", panel, cols)
+				}
+			}
+		})
+	}
+
+	const reversed = `editors:
+  view:
+    list:
+      columns:
+        username: {label: demo.username}
+        email: {label: demo.email}
+  manage:
+    list:
+      columns:
+        email: {label: demo.email}
+        username: {label: demo.username}
+`
+	ctl := relationTestController{}
+	fsys := relationTestFS(reversed)
+	form, err := CompileForm("acme.demo", ctl, fsys)
+	if err != nil {
+		t.Fatal(err)
+	}
+	relations, err := compileRelations("acme.demo", ctl, fsys, form)
+	if err != nil {
+		t.Fatal(err)
+	}
+	schema := relations["editors"].Schema
+	if v, m := schema.View.List.Columns, schema.Manage.List.Columns; v[0].Key != "username" || m[0].Key != "email" {
+		t.Fatalf("view=%+v manage=%+v, want each panel in its own file order", v, m)
+	}
+}
+
 func TestRelationCandidateExclusions(t *testing.T) {
 	contract := relationTestController{}.AdminRelationContracts()[0]
 	ids, err := contract.ExcludedRelatedIDs(&relationTestOwner{OwnerID: 41})