matsandClaude Opus 4.8
d711348863
Consumer side of the catalog-projection seam (C1): - catalogProjectionCache now wraps ProjectionStore[catalog.Projection] (identity transform — the cart's overlay uses ~all fields); delivery handler routes bus frames via HandleFrame (snapshot begin|chunk|end + epoch-stamped deltas). - Per-pod cold-start-ready .bin under CART_PROJECTION_DIR (pod-local, never shared) + IsDeleted tombstone passthrough; HTTP fetch demoted to last-resort. - Tests: test-only Apply shim + mustCache helper keep existing cases green; new snapshot-framing integration test. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
73 lines
2.4 KiB
Go
73 lines
2.4 KiB
Go
package main
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import (
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"strconv"
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"testing"
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"git.k6n.net/mats/platform/catalog"
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"git.k6n.net/mats/platform/money"
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)
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// frameMeta builds the event.Meta a producer stamps for a snapshot frame / delta.
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func frameMeta(phase string, epoch int64) map[string]string {
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m := map[string]string{catalog.MetaEpoch: strconv.FormatInt(epoch, 10), catalog.MetaTenant: "se"}
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if phase != "" {
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m[catalog.MetaSnapshotPhase] = phase
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}
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return m
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}
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func enc(t *testing.T, ups []catalog.ProjectionUpdate) []byte {
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t.Helper()
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b, err := catalog.EncodeUpdates(ups)
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if err != nil {
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t.Fatalf("encode: %v", err)
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}
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return b
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}
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// TestCartCache_SnapshotThenDelta exercises the cart's cache through the real bus
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// framing: a full begin→chunk→end snapshot makes SKUs Get-able cold (no Apply),
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// then an epoch-matched delta overrides one and tombstones another.
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func TestCartCache_SnapshotThenDelta(t *testing.T) {
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c := mustCache(t)
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const epoch = int64(1000)
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if err := c.HandleFrame(frameMeta(catalog.SnapshotBegin, epoch), enc(t, nil)); err != nil {
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t.Fatal(err)
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}
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if err := c.HandleFrame(frameMeta(catalog.SnapshotChunk, epoch), enc(t, []catalog.ProjectionUpdate{
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{Projection: catalog.Projection{ID: "sku:A", SKU: "A", PriceIncVat: money.Cents(100_00), TaxClass: "standard", ItemID: 1}},
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{Projection: catalog.Projection{ID: "sku:B", SKU: "B", PriceIncVat: money.Cents(50_00), TaxClass: "reduced", ItemID: 2}},
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})); err != nil {
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t.Fatal(err)
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}
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// end carries the total count for the completeness guard.
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endMeta := frameMeta(catalog.SnapshotEnd, epoch)
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endMeta[catalog.MetaCount] = "2"
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if err := c.HandleFrame(endMeta, enc(t, nil)); err != nil {
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t.Fatal(err)
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}
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if got, ok := c.Get("A"); !ok || got.PriceIncVat != 100_00 {
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t.Fatalf("A from snapshot = %+v ok=%v, want 10000", got, ok)
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}
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// Epoch-matched delta: bump A's price, delete B.
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if err := c.HandleFrame(frameMeta("", epoch), enc(t, []catalog.ProjectionUpdate{
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{Projection: catalog.Projection{SKU: "A", PriceIncVat: money.Cents(90_00), TaxClass: "standard", ItemID: 1}},
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{Projection: catalog.Projection{SKU: "B"}, Deleted: true},
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})); err != nil {
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t.Fatal(err)
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}
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if got, _ := c.Get("A"); got.PriceIncVat != 90_00 {
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t.Fatalf("A after delta = %d, want 9000", got.PriceIncVat)
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}
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if _, ok := c.Get("B"); ok {
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t.Fatalf("B after delete should miss")
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}
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if !c.IsDeleted("B") {
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t.Fatalf("B should be tombstoned (skip HTTP fetch)")
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}
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}
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