fix CheckPaymentPaidResponse schema

2 files changed, 9 insertions, 2 deletions

diff --git a/packages/taler-integrationtests/src/merchantApiTypes.ts b/packages/taler-integrationtests/src/merchantApiTypes.ts
index 1806ab706..1cfc72db1 100644
--- a/packages/taler-integrationtests/src/merchantApiTypes.ts
+++ b/packages/taler-integrationtests/src/merchantApiTypes.ts
@@ -82,7 +82,7 @@ export const codecForCheckPaymentPaidResponse = (): Codec<
   CheckPaymentPaidResponse
 > =>
   buildCodecForObject<CheckPaymentPaidResponse>()
-    .property("order_status_url", codecForConstString("paid"))
+    .property("order_status_url", codecForString())
     .property("order_status", codecForConstString("paid"))
     .property("refunded", codecForBoolean())
     .property("wired", codecForBoolean())
diff --git a/packages/taler-wallet-core/src/util/codec.ts b/packages/taler-wallet-core/src/util/codec.ts
index 4654c8b93..8605ff335 100644
--- a/packages/taler-wallet-core/src/util/codec.ts
+++ b/packages/taler-wallet-core/src/util/codec.ts
@@ -341,10 +341,17 @@ export function codecForConstString<V extends string>(s: V): Codec<V> {
       if (x === s) {
         return x;
       }
+      if (typeof x !== "string") {
+        throw new DecodingError(
+          `expected string constant "${s}" at ${renderContext(
+            c,
+          )} but got ${typeof x}`,
+        );
+      }
       throw new DecodingError(
         `expected string constant "${s}" at ${renderContext(
           c,
-        )}  but got ${typeof x}`,
+        )} but got string value "${x}"`,
       );
     },
   };