72 lines
3.2 KiB
MQL5
72 lines
3.2 KiB
MQL5
 | //+------------------------------------------------------------------+
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//| BehaviorLibrary.mqh |
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//| Synthetic Test Harness for MetaTrader 5 |
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//| Institutional Architecture in MQL5 - Part 1 Series |
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//+------------------------------------------------------------------+
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#ifndef SYNTHETIC_TEST_HARNESS_BEHAVIOR_LIBRARY_MQH
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#define SYNTHETIC_TEST_HARNESS_BEHAVIOR_LIBRARY_MQH
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#include "BehaviorDelegates.mqh"
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#include "ErrorCodes.mqh"
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//+------------------------------------------------------------------+
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//| Stateful Mock Behaviors for Chaos Engineering |
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//| |
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//| This module supplies pre-packaged behaviors for injecting faults |
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//| and edge cases into the trading environment. |
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//+------------------------------------------------------------------+
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//+------------------------------------------------------------------+
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//| Behavior_RequoteTwice: |
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//| Simulates a broker that requotes 2 consecutive execution |
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//| attempts, and fills the order on the 3rd attempt. |
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//| |
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//| Lifecycle: |
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//| Call 1: Returns false, retcode = TRADE_RETCODE_REQUOTE (10004) |
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//| Call 2: Returns false, retcode = TRADE_RETCODE_REQUOTE (10004) |
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//| Call 3: Returns true, retcode = TRADE_RETCODE_DONE (10009) |
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//| Counter automatically resets to 0. |
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//+------------------------------------------------------------------+
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bool Behavior_RequoteTwice(MqlTradeRequest &request, MqlTradeResult &result)
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{
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static int call_count = 0;
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call_count++;
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ZeroMemory(result);
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if(call_count < 3)
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{
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result.retcode = SYNTH_ERR_REQUOTE; // TRADE_RETCODE_REQUOTE
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result.comment = StringFormat("Chaos Injection: Requote attempt #%d", call_count);
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return(false);
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}
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// 3rd attempt succeeds
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result.retcode = TRADE_RETCODE_DONE;
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result.volume = request.volume;
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result.price = (request.type == ORDER_TYPE_BUY) ? request.price : request.price;
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result.deal = 12345678;
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result.order = 87654321;
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result.comment = "Chaos Injection: Order filled on 3rd attempt";
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// Reset counter for subsequent cycles
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call_count = 0;
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return(true);
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}
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//+------------------------------------------------------------------+
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//| Behavior_FatalDisconnect: |
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//| Simulates an unrecoverable broker gateway / network disconnect. |
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//| |
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//| Returns false with TRADE_RETCODE_CONNECTION (10031). |
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//+------------------------------------------------------------------+
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bool Behavior_FatalDisconnect(MqlTradeRequest &request, MqlTradeResult &result)
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{
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ZeroMemory(result);
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result.retcode = TRADE_RETCODE_CONNECTION; // 10031: No connection with the trade server
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result.comment = "Chaos Injection: Fatal broker disconnect simulated";
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return(false);
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}
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#endif
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//+------------------------------------------------------------------+
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