order sagas

2026-06-21 11:33:20 +02:00
parent 484f2364fb
commit 1a365de071
25 changed files with 4224 additions and 1 deletions
@@ -0,0 +1,73 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"testing"
+	"time"
+
+	"git.k6n.net/mats/go-cart-actor/pkg/actor"
+	"git.k6n.net/mats/go-cart-actor/pkg/order"
+)
+
+func testApplier(t *testing.T) *orderedApplier {
+	t.Helper()
+	reg := actor.NewMutationRegistry()
+	order.RegisterMutations(reg)
+	storage := actor.NewDiskStorage[order.OrderGrain](t.TempDir(), reg)
+	pool, err := actor.NewSimpleGrainPool(actor.GrainPoolConfig[order.OrderGrain]{
+		Hostname: "test",
+		Spawn: func(_ context.Context, id uint64) (actor.Grain[order.OrderGrain], error) {
+			return order.NewOrderGrain(id, time.Now()), nil
+		},
+		SpawnHost: func(string) (actor.Host[order.OrderGrain], error) { return nil, fmt.Errorf("none") },
+		Destroy:   func(actor.Grain[order.OrderGrain]) error { return nil },
+		TTL:       time.Hour,
+		PoolSize:  100,
+
+		MutationRegistry: reg,
+		Storage:          nil,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(pool.Close)
+	return &orderedApplier{pool: pool, storage: storage}
+}
+
+func TestIngestLegacyOrder(t *testing.T) {
+	app := testApplier(t)
+	ctx := context.Background()
+	body := []byte(`{
+		"order_id":"K-1","purchase_currency":"SEK","purchase_country":"se","locale":"sv-SE",
+		"order_amount":15000,"order_tax_amount":3000,
+		"order_lines":[{"reference":"l1","name":"Widget","quantity":1,"unit_price":15000,"tax_rate":25,"total_amount":15000,"total_tax_amount":3000}]
+	}`)
+
+	if err := ingestLegacyOrder(ctx, app, body); err != nil {
+		t.Fatalf("ingest: %v", err)
+	}
+	id := legacyOrderID("K-1")
+	g, err := app.Get(ctx, id)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if g.Status != order.StatusCaptured {
+		t.Fatalf("status = %q, want captured", g.Status)
+	}
+	if g.CapturedAmount != 15000 {
+		t.Fatalf("captured = %d, want 15000", g.CapturedAmount)
+	}
+
+	// Redelivery must be idempotent — no double capture, no new payment.
+	if err := ingestLegacyOrder(ctx, app, body); err != nil {
+		t.Fatalf("re-ingest: %v", err)
+	}
+	g2, _ := app.Get(ctx, id)
+	if g2.CapturedAmount != 15000 {
+		t.Fatalf("redelivery double-captured: %d", g2.CapturedAmount)
+	}
+	if len(g2.Payments) != 1 {
+		t.Fatalf("redelivery created %d payments, want 1", len(g2.Payments))
+	}
+}