diff --git a/Account/AccountBase.h b/Account/AccountBase.h
index 5cb522e24..359d4c0ed 100644
--- a/Account/AccountBase.h
+++ b/Account/AccountBase.h
@@ -57,6 +57,8 @@ class AccountBase : public Dynamic {
    */
   ~AccountBase() {}
 
+  /* Virtual methods */
+
   /**
    * Returns balance value of the current account.
    */
diff --git a/Account/tests/Account.test.mq5 b/Account/tests/Account.test.mq5
index 67b1ca128..605896215 100644
--- a/Account/tests/Account.test.mq5
+++ b/Account/tests/Account.test.mq5
@@ -28,12 +28,51 @@
 #include "../../Test.mqh"
 #include "../Account.h"
 
+
+// Test classes.
+class AccountTest : public Account<AccountBaseState, AccountBaseEntry> {
+  /**
+   * Returns balance value of the current account.
+   */
+  float GetBalance() { return 0; }
+
+  /**
+   * Returns credit value of the current account.
+   */
+  float GetCredit() { return 0; }
+
+  /**
+   * Returns profit value of the current account.
+   */
+  float GetProfit() { return 0; }
+
+  /**
+   * Returns equity value of the current account.
+   */
+  float GetEquity() { return 0; }
+
+  /**
+   * Returns margin value of the current account.
+   */
+  float GetMarginUsed() { return 0; }
+
+  /**
+   * Returns free margin value of the current account.
+   */
+  float GetMarginFree() { return 0; }
+
+  /**
+   * Get account available margin.
+   */
+  float GetMarginAvail() { return 0; }
+};
+
 /**
  * Implements OnInit().
  */
 int OnInit() {
   bool _result = true;
-  Account<AccountBaseState, AccountBaseEntry> acc1;
+  AccountTest acc1;
   // ...
   return _result && GetLastError() == 0 ? INIT_SUCCEEDED : INIT_FAILED;
 }
diff --git a/Exchange/tests/Exchange.test.mq5 b/Exchange/tests/Exchange.test.mq5
index d3d289c61..498c0c791 100644
--- a/Exchange/tests/Exchange.test.mq5
+++ b/Exchange/tests/Exchange.test.mq5
@@ -30,7 +30,43 @@
 #include "../Exchange.h"
 
 // Test classes.
-class AccountDummy : public AccountBase {};  // <AccountForexState, AccountForexEntry>
+class AccountDummy : public AccountBase {
+  /**
+   * Returns balance value of the current account.
+   */
+  float GetBalance() { return 0; }
+
+  /**
+   * Returns credit value of the current account.
+   */
+  float GetCredit() { return 0; }
+
+  /**
+   * Returns profit value of the current account.
+   */
+  float GetProfit() { return 0; }
+
+  /**
+   * Returns equity value of the current account.
+   */
+  float GetEquity() { return 0; }
+
+  /**
+   * Returns margin value of the current account.
+   */
+  float GetMarginUsed() { return 0; }
+
+  /**
+   * Returns free margin value of the current account.
+   */
+  float GetMarginFree() { return 0; }
+
+  /**
+   * Get account available margin.
+   */
+  float GetMarginAvail() { return 0; }
+};
+
 class ExchangeDummy : public Exchange {};
 class SymbolDummy : public SymbolInfo {};
 class TradeDummy : public Trade {