Add debug toString to signer and key stores

src/account.ts

@@ -117,7 +117,7 @@ export class Account {
         const result = await exponentialBackoff(TX_STATUS_RETRY_WAIT, TX_NONCE_RETRY_NUMBER, TX_STATUS_RETRY_WAIT_BACKOFF, async () => {
             const accessKeyInfo = await this.findAccessKey(receiverId, actions);
             if (!accessKeyInfo) {
-                throw new TypedError(`Can not sign transactions for account ${this.accountId}, no matching key pair found in Signer.`, 'KeyNotFound');
+                throw new TypedError(`Can not sign transactions for account ${this.accountId} on network ${this.connection.networkId}, no matching key pair found in ${this.connection.signer}.`, 'KeyNotFound');
             }
             const { publicKey, accessKey } = accessKeyInfo;
 

src/key_stores/in_memory_key_store.ts

@@ -80,4 +80,8 @@ export class InMemoryKeyStore extends KeyStore {
         });
         return result;
     }
+
+    toString(): string {
+        return 'InMemoryKeyStore';
+    }
 }

src/key_stores/merge_key_store.ts

@@ -89,4 +89,8 @@ export class MergeKeyStore extends KeyStore {
         }
         return Array.from(result);
     }
-}
+
+    toString(): string {
+        return `MergeKeyStore(${this.keyStores.join(', ')})`;
+    }
+}

src/key_stores/unencrypted_file_system_keystore.ts

@@ -141,4 +141,8 @@ export class UnencryptedFileSystemKeyStore extends KeyStore {
             .filter(file => file.endsWith('.json'))
             .map(file => file.replace(/.json$/, ''));
     }
+
+    toString(): string {
+        return `UnencryptedFileSystemKeyStore(${this.keyDir})`;
+    }
 }

src/signer.ts

@@ -82,4 +82,8 @@ export class InMemorySigner extends Signer {
         }
         return keyPair.sign(hash);
     }
+
+    toString(): string {
+        return `InMemorySigner(${this.keyStore})`;
+    }
 }

test/account.access_key.test.js

@@ -40,7 +40,7 @@ test('remove access key no longer works', async() => {
         await contract.setValue({value: 'test'});
         fail('should throw an error');
     } catch (e) {
-        expect(e.message).toEqual(`Can not sign transactions for account ${workingAccount.accountId}, no matching key pair found in Signer.`);
+        expect(e.message).toEqual(`Can not sign transactions for account ${workingAccount.accountId} on network unittest, no matching key pair found in InMemorySigner(InMemoryKeyStore).`);
         expect(e.type).toEqual('KeyNotFound');
     }
 });