feat: persist player-scoped assignments

server/store/assignment_sql_test.go

@@ -0,0 +1,31 @@
+package store
+
+import (
+	"testing"
+	"time"
+)
+
+func TestAssignmentSQLBindsPlayerAndPreservesIdenticalReplay(t *testing.T) {
+	for query, fragments := range map[string][]string{
+		AssignmentUpsertSQL: {"ON CONFLICT (match_id, player_id)", "WHERE assignments.allocation_id = EXCLUDED.allocation_id", "join_authorisation", "manifest_digest"},
+		AssignmentSelectSQL: {"match_id = $1", "player_id = $2", "expires_at > $3"},
+	} {
+		for _, fragment := range fragments {
+			if !contains(query, fragment) {
+				t.Fatalf("query %q missing %q", query, fragment)
+			}
+		}
+	}
+}
+
+func TestAssignmentStoreRejectsInvalidRecoveryAndManifestInputs(t *testing.T) {
+	if _, err := GetAssignment(nil, nil, "player-1", "match-1", time.Unix(1000, 0)); err == nil {
+		t.Fatal("nil database accepted")
+	}
+	if err := SaveAssignment(nil, nil, DurableAssignment{MatchID: "match-1", PlayerID: "player-1", ExpiresAt: time.Unix(1000, 0)}); err == nil {
+		t.Fatal("incomplete assignment accepted")
+	}
+	if err := validateDurableAssignment(DurableAssignment{MatchID: "match-1", PlayerID: "player-1", AllocationID: "allocation-1", ServerID: "server-1", Slot: 6, Region: "EU", ClientBuild: "build-1", ProtocolVersion: 1, Transport: "enet", Endpoint: "127.0.0.1:1", JoinAuthorisation: "join", ManifestDigest: []byte("digest"), ExpiresAt: time.Unix(1001, 0)}); err == nil {
+		t.Fatal("out-of-range slot accepted")
+	}
+}