entc/load: add support for embedding schemas

Reviewed By: alexsn

Differential Revision: D16884402

fbshipit-source-id: 216bbf875251b0cbdd61e312ad763b439cab7813

entc/load/testdata/base/schema.go

@@ -0,0 +1,29 @@
+package base
+
+import (
+	"fbc/ent"
+	"fbc/ent/schema/field"
+)
+
+// base schema for sharing fields and edges.
+type base struct {
+	ent.Schema
+}
+
+func (base) Fields() []ent.Field {
+	return []ent.Field{
+		field.Int("base_field"),
+	}
+}
+
+// User holds the user schema.
+type User struct {
+	base
+}
+
+func (u User) Fields() []ent.Field {
+	return append(
+		u.base.Fields(),
+		field.String("user_field"),
+	)
+}