Keep a refused registration left to the build records, in the store and the process, so the look fails the plan rather than settling it built; and forget a deleted module and say what was never sent when the records settle (issue 1708)

internal/inventory/refused_test.go

@@ -0,0 +1,28 @@
+//go:build integration
+
+package inventory
+
+import "testing"
+
+// novox/hq issue 1708 (1708/AC6): a refused registration is kept by its build's id, the first refusal standing, and
+// read back for the builds asked about only.
+func TestARefusedRegistrationIsKeptByItsBuild(t *testing.T) {
+	inv := ForTest(t)
+	ctx := t.Context()
+	if err := inv.RecordRefused(ctx, "build-1708-a", "nodered", "a port is taken"); err != nil {
+		t.Fatal(err)
+	}
+	if err := inv.RecordRefused(ctx, "build-1708-a", "nodered", "said again"); err != nil {
+		t.Fatalf("a refusal said twice was refused: %v", err)
+	}
+	got, err := inv.RefusedOf(ctx, []string{"build-1708-a", "build-1708-b"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(got) != 1 || got["build-1708-a"] != "a port is taken" {
+		t.Fatalf("the refusals read back are %v", got)
+	}
+	if none, err := inv.RefusedOf(ctx, nil); err != nil || len(none) != 0 {
+		t.Fatalf("no builds asked about answered %v %v", none, err)
+	}
+}