test: cover PostgreSQL result and outbox flow

server/store/postgres_integration_test.go

@@ -4,6 +4,7 @@ package store
 
 import (
 	"context"
+	"crypto/sha256"
 	"database/sql"
 	"fmt"
 	"os"
@@ -243,6 +244,47 @@ func TestPostgreSQLProposalCreationRollsBackPartialClaims(t *testing.T) {
 	}
 }
 
+func TestPostgreSQLResultCompletionAndOutboxAreAtomicAndReplayable(t *testing.T) {
+	db := openIntegrationPostgres(t)
+	applyIntegrationMigrations(t, db)
+	now := time.Now().UTC().Truncate(time.Microsecond)
+	ctx := context.Background()
+	if _, err := db.ExecContext(ctx, `INSERT INTO matches (match_id, playlist, state, region, protocol_version, server_id) VALUES ('result-match', 'casual', 'RESULT_PENDING', 'NA', 1, 'result-server')`); err != nil {
+		t.Fatal(err)
+	}
+	payload := []byte(`{"match_id":"result-match","team0_score":2,"team1_score":1}`)
+	digest := sha256.Sum256(payload)
+	receipt := domain.ResultReceipt{ResultID: "result-receipt", MatchID: "result-match", ResultNonce: "result-nonce-123456", PayloadDigest: digest, IntegrityState: domain.IntegrityCertified, ReceivedAt: now}
+	if err := CompleteResult(ctx, db, receipt, "result-server", "result-event", payload, now); err != nil {
+		t.Fatalf("complete result: %v", err)
+	}
+	var state string
+	if err := db.QueryRow(`SELECT state FROM matches WHERE match_id = 'result-match'`).Scan(&state); err != nil {
+		t.Fatal(err)
+	}
+	if state != "COMPLETED" {
+		t.Fatalf("result match state = %s", state)
+	}
+	events, err := ReadUnpublishedOutbox(ctx, db, 10)
+	if err != nil || len(events) != 1 || events[0].EventID != "result-event" {
+		t.Fatalf("unpublished result events = %+v, err = %v", events, err)
+	}
+	if err := MarkOutboxPublished(ctx, db, events[0].EventID, now.Add(time.Second)); err != nil {
+		t.Fatalf("ack result event: %v", err)
+	}
+	if remaining, err := ReadUnpublishedOutbox(ctx, db, 10); err != nil || len(remaining) != 0 {
+		t.Fatalf("outbox after ack = %+v, err = %v", remaining, err)
+	}
+	if err := CompleteResult(ctx, db, receipt, "result-server", "result-event-retry", payload, now.Add(time.Second)); err != nil {
+		t.Fatalf("identical completed result replay: %v", err)
+	}
+	conflict := receipt
+	conflict.ResultID = "different-result"
+	if err := CompleteResult(ctx, db, conflict, "result-server", "different-event", []byte(`{"conflict":true}`), now.Add(2*time.Second)); err == nil {
+		t.Fatal("conflicting completed result was accepted")
+	}
+}
+
 func TestPostgreSQLMigrationsAreForwardExecutable(t *testing.T) {
 	db := openIntegrationPostgres(t)
 	applyIntegrationMigrations(t, db)