Added get pending tx in query api (#31)

Signed-off-by: Mingela <[email protected]>

Author: Mingela

client/src/main/java/jp/co/soramitsu/iroha/java/QueryAPI.java

@@ -181,4 +181,16 @@ public SignatoriesResponse getSignatories(String accountId) {
 
     return res.getSignatoriesResponse();
   }
+
+  public TransactionsResponse getPendingTransactions() {
+    val q = Query.builder(this.accountId, counter.getAndIncrement())
+        .getPendingTransactions()
+        .buildSigned(keyPair);
+
+    val res = api.query(q);
+
+    checkErrorResponse(res);
+
+    return res.getTransactionsResponse();
+  }
 }

client/src/test/groovy/jp/co/soramitsu/iroha/java/IntegrationTest.groovy

@@ -243,5 +243,18 @@ class IntegrationTest extends Specification {
         def accountKey = queryResponse.keysList.get(0)
 
         accountKey == Utils.toHex(defaultKeypair.public.encoded).toLowerCase()
+
+        def pendingTx = Transaction.builder(defaultAccountId, Instant.now())
+                .createAccount(anotherAccount, defaultDomain, defaultKeypair.getPublic())
+                .setQuorum(2)
+                .sign(defaultKeypair)
+                .build()
+        api.transactionSync(pendingTx)
+
+        when: "get pending transaxtions query is executed"
+        queryResponse = qapi.getPendingTransactions()
+
+        then: "response is valid containing single transaction"
+        queryResponse.transactionsCount == 1
     }
 }