41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
package cart
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import (
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"context"
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"testing"
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"time"
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cart_messages "git.k6n.net/go-cart-actor/proto/cart"
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)
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// Item identity is the catalog item id, not the (reference-only) SKU: two adds
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// with the same ItemId but different SKU strings must merge into one line.
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func TestAddItem_MergesByItemIdNotSku(t *testing.T) {
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reg := NewCartMultationRegistry(NewCartMutationContext(nil))
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g := NewCartGrain(1, time.Now())
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ctx := context.Background()
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if _, err := reg.Apply(ctx, g, &cart_messages.AddItem{ItemId: 144047, Sku: "A0162590", Quantity: 1, Price: 1000}); err != nil {
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t.Fatalf("first add: %v", err)
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}
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// Same id, different (reference) sku string -> should merge, not create a line.
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if _, err := reg.Apply(ctx, g, &cart_messages.AddItem{ItemId: 144047, Sku: "STALE-REF", Quantity: 2, Price: 1000}); err != nil {
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t.Fatalf("second add: %v", err)
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}
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if len(g.Items) != 1 {
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t.Fatalf("items = %d, want 1 (merged by id)", len(g.Items))
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}
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if g.Items[0].Quantity != 3 {
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t.Errorf("quantity = %d, want 3", g.Items[0].Quantity)
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}
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// A different id is a distinct line.
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if _, err := reg.Apply(ctx, g, &cart_messages.AddItem{ItemId: 170852, Sku: "A0190103", Quantity: 1, Price: 500}); err != nil {
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t.Fatalf("third add: %v", err)
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}
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if len(g.Items) != 2 {
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t.Fatalf("items = %d, want 2", len(g.Items))
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}
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}
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