diff --git a/src/test/java/bdchain/api/Test.java b/src/test/java/bdchain/api/Test.java
new file mode 100644
index 0000000..ba92ffa
--- /dev/null
+++ b/src/test/java/bdchain/api/Test.java
@@ -0,0 +1,37 @@
+package bdchain.api;
+
+import bdchain.api.grpc.GetLedgersResponse;
+import bdchain.api.grpc.TransactionType;
+
+public class Test {
+  public static void main(String[] args) {
+
+    final String ledger = "test";
+    final int block_number = 1;
+    final String block_hash = "0x0";
+    final int index = 0;
+
+    TransactionLedgerClient tlClient = new TransactionLedgerClient("localhost", 8004);
+    System.out.println(tlClient.createLedger(ledger).getOk());
+    GetLedgersResponse r = tlClient.getLedgers();
+    for (int i = 0; i < r.getLedgersCount(); i++) {
+      System.out.println(r.getLedgers(i));
+    }
+    System.out.println(
+        tlClient
+            .sendTransaction(ledger, TransactionType.RECORD, "0x0", "0x1", "data".getBytes())
+            .getHash());
+
+    AccountingChainClient acClient = new AccountingChainClient("localhost", 8013);
+    System.out.println(acClient.blockNumber(ledger).getBlockNumber());
+    System.out.println(acClient.getBlockByNumber(ledger, block_number, false).toString());
+    System.out.println(acClient.getBlockByNumber(ledger, block_number, true).toString());
+    System.out.println(acClient.getBlockByHash(ledger, block_hash, false).toString());
+    System.out.println(acClient.getBlockByHash(ledger, block_hash, true).toString());
+    System.out.println(acClient.getTransactionByHash(ledger, "0x0").toString());
+    System.out.println(
+        acClient.getTransactionByBlockNumberAndIndex(ledger, block_number, index).toString());
+    System.out.println(
+        acClient.getTransactionByBlockHashAndIndex(ledger, block_hash, index).toString());
+  }
+}