fix an error in ca-sqlite test

Change-Id: I61b1227b5a994529e3377954a3a877f67688c350
diff --git a/tests/unit-tests/ca-sqlite.t.cpp b/tests/unit-tests/ca-sqlite.t.cpp
index 1367bd7..ee93edd 100644
--- a/tests/unit-tests/ca-sqlite.t.cpp
+++ b/tests/unit-tests/ca-sqlite.t.cpp
@@ -29,7 +29,7 @@
 
 BOOST_AUTO_TEST_CASE(RequestOperations)
 {
-  CaSqlite storage(Name(), dbDir.string() + "test.db");
+  CaSqlite storage(Name(), dbDir.string() + "TestCaSqlite_RequestOperations.db");
 
   auto identity1 = addIdentity(Name("/ndn/site1"));
   auto key1 = identity1.getDefaultKey();
@@ -37,7 +37,7 @@
 
   // add operation
   CaState request1(Name("/ndn/site1"), "123", RequestType::NEW, Status::BEFORE_CHALLENGE, cert1, makeStringBlock(tlv::ContentType_Key, "PretendItIsAKey"));
-  BOOST_CHECK_NO_THROW(storage.addRequest(request1));
+  storage.addRequest(request1);
 
   // get operation
   auto result = storage.getRequest("123");
@@ -78,7 +78,7 @@
 
 BOOST_AUTO_TEST_CASE(DuplicateAdd)
 {
-    CaSqlite storage(Name(), dbDir.string() + "test.db");
+    CaSqlite storage(Name(), dbDir.string() + "TestCaSqlite_DuplicateAdd.db");
 
     auto identity1 = addIdentity(Name("/ndn/site1"));
     auto key1 = identity1.getDefaultKey();