mql-for-begginers/Scripts/UnitTests/Generic/TestStack.mq5

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//+------------------------------------------------------------------+
//| TestStack.mq5 |
//| Copyright 2000-2025, MetaQuotes Ltd. |
//| https://www.mql5.com |
//+------------------------------------------------------------------+
#include <Generic\Stack.mqh>
#include <Generic\ArrayList.mqh>
//+------------------------------------------------------------------+
//| TestConstructor_Valid. |
//+------------------------------------------------------------------+
bool TestConstructor_Valid(const int count)
{
//--- create random array
int array[];
ArrayResize(array,count);
for(int i=0; i<count; i++)
array[i]=MathRand();
//--- create list
CArrayList<int>list(array);
//--- create source stack
CStack<int>stack_test1(array);
CStack<int>stack_test2(GetPointer(list));
CStack<int>stack_test3(count);
for(int i=0; i<count; i++)
stack_test3.Add(array[i]);
//--- check count
if(stack_test1.Count()!=count)
return(false);
if(stack_test2.Count()!=count)
return(false);
if(stack_test3.Count()!=count)
return(false);
//--- check elements
for(int i=0; i<count; i++)
{
if(array[count-1-i]!=stack_test1.Pop())
return(false);
if(array[count-1-i]!=stack_test2.Pop())
return(false);
if(array[count-1-i]!=stack_test3.Pop())
return(false);
}
//--- successful
return(true);
}
//+------------------------------------------------------------------+
//| TestConstructor_Invalid. |
//+------------------------------------------------------------------+
bool TestConstructor_Invalid(const int count)
{
//--- create source stack
CStack<int>stack_test1(-1);
CStack<int>stack_test2(INT_MIN);
//--- check
if(stack_test1.Count()!=0)
return(false);
if(stack_test2.Count()!=0)
return(false);
//--- successful
return(true);
}
//+------------------------------------------------------------------+
//| TestConstructor. |
//+------------------------------------------------------------------+
bool TestConstructor(const string test_name)
{
PrintFormat("%s started",test_name);
//--- test 1
PrintFormat("%s: Test 1: Testing Constructor of stack with array, ICollection object and correct capacity.",test_name);
if(!TestConstructor_Valid(10))
return(false);
//--- test 2
PrintFormat("%s: Test 2: Testing Constructor of stack with incorrect capacity.",test_name);
if(!TestConstructor_Invalid(10))
return(false);
//--- successful
PrintFormat("%s passed",test_name);
return(true);
}
//+------------------------------------------------------------------+
//| TestMisc_Pop. |
//+------------------------------------------------------------------+
bool TestMisc_Pop(const int count)
{
//--- create random array
int array[];
ArrayResize(array,count);
for(int i=0; i<count; i++)
array[i]=MathRand();
//--- create source stack
CStack<int>stack_test(array);
//--- check elements
for(int i=0; i<count; i++)
if(stack_test.Pop()!=array[count-1-i])
return(false);
//--- check count
if(stack_test.Count()!=0)
return(false);
//--- successful
return(true);
}
//+------------------------------------------------------------------+
//| TestMisc_Peek. |
//+------------------------------------------------------------------+
bool TestMisc_Peek(const int count)
{
//--- create random array
int array[];
ArrayResize(array,count);
for(int i=0; i<count; i++)
array[i]=MathRand();
//--- create source stack
CStack<int>stack_test(array);
//--- check element
if(stack_test.Peek()!=array[count-1])
return(false);
//--- check count
if(stack_test.Count()!=count)
return(false);
//--- successful
return(true);
}
//+------------------------------------------------------------------+
//| TestMisc_Complex. |
//+------------------------------------------------------------------+
bool TestMisc_Complex(const int count)
{
//--- create random array
int array[];
ArrayResize(array,count);
for(int i=0; i<count; i++)
array[i]=MathRand();
//--- create source stack
CStack<int>stack_test(count);
//--- push values
for(int i=0; i<count; i++)
if(!stack_test.Push(array[i]))
return(false);
//--- check count
if(stack_test.Count()!=count)
return(false);
//--- check elements
for(int i=0; i<count; i++)
{
if(array[count-1-i]!=stack_test.Pop())
return(false);
if(count-i-1!=stack_test.Count())
return(false);
}
//--- recheck
stack_test.Push(0);
if(stack_test.Pop()!=0)
return(false);
//--- successful
return(true);
}
//+------------------------------------------------------------------+
//| TestMisc_TrimExcess. |
//+------------------------------------------------------------------+
bool TestMisc_TrimExcess(const int count)
{
//--- create random array
int array[];
ArrayResize(array,count);
for(int i=0; i<count; i++)
array[i]=MathRand();
//--- create source stack
CStack<int>stack_test(array);
//--- trim
stack_test.TrimExcess();
int removed=stack_test.Pop();
stack_test.TrimExcess();
//--- check element
if(stack_test.Peek()!=array[count-2])
return(false);
//--- check count
if(stack_test.Count()!=count-1)
return(false);
//--- trim and clear
stack_test.TrimExcess();
stack_test.Clear();
stack_test.TrimExcess();
//--- check count
if(stack_test.Count()!=0)
return(false);
//--- add elemnt and trim
stack_test.Add(0);
stack_test.TrimExcess();
//--- check count
if(stack_test.Count()!=1)
return(false);
//--- successful
return(true);
}
//+------------------------------------------------------------------+
//| TestMisc. |
//+------------------------------------------------------------------+
bool TestMisc(const string test_name)
{
PrintFormat("%s started",test_name);
//--- test 1
PrintFormat("%s: Test 1: Validation of Pop method for all element of the stack and check count after.",test_name);
if(!TestMisc_Pop(10))
return(false);
//--- test 2
PrintFormat("%s: Test 2: Validation of Peek method for all element of the stack and check count after.",test_name);
if(!TestMisc_Peek(10))
return(false);
//--- test 3
PrintFormat("%s: Test 3: Complex validation of Push and Pop methods.",test_name);
if(!TestMisc_Complex(10))
return(false);
//--- test 4
PrintFormat("%s: Test 4: Testing TrimExcess method on the stack after filling, clearing and adding elements.",test_name);
if(!TestMisc_TrimExcess(10))
return(false);
//--- successful
PrintFormat("%s passed",test_name);
return(true);
}
//+------------------------------------------------------------------+
//| TestStack. |
//+------------------------------------------------------------------+
void TestStack(int &tests_performed,int &tests_passed)
{
string test_name="";
//--- Constructor functions
tests_performed++;
test_name="TestConstructor functions test";
if(TestConstructor(test_name))
tests_passed++;
else
PrintFormat("%s failed",test_name);
//--- AddRange functions
tests_performed++;
test_name="TestMisc functions test";
if(TestMisc(test_name))
tests_passed++;
else
PrintFormat("%s failed",test_name);
}
//+------------------------------------------------------------------+
//| Script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
MathSrand(0);
string package_name="Generic";
PrintFormat("Unit tests for Package %s\n",package_name);
//--- initial values
int tests_performed=0;
int tests_passed=0;
//--- test distributions
TestStack(tests_performed,tests_passed);
//--- print statistics
PrintFormat("\n%d of %d passed",tests_passed,tests_performed);
}
//+------------------------------------------------------------------+