If ExistsTx fails try looking up the tx, it may be fully spent.

interface_test.go

@@ -184,9 +184,12 @@ func testExistsTxSha(tc *testContext) bool {
 		// The transaction must exist in the database.
 		txHash := tx.Sha()
 		if exists := tc.db.ExistsTxSha(txHash); !exists {
+			_, err := tc.db.FetchTxBySha(txHash)
+			if err != nil {
 				tc.t.Errorf("ExistsTxSha (%s): block #%d (%s) "+
 					"tx #%d (%s) does not exist", tc.dbType,
 					tc.blockHeight, tc.blockHash, i, txHash)
+			}
 			return false
 		}
 	}