public void min_max_test()
{
uint[] test_values_1 = { 15, 64, 19, 7, 0, 75, 73, 97, 41, 17 }; // 9,73
uint[] test_values_2 = { 33, 6, 97, 24, 81, 85, 53, 49, 34, 100, 95, 23, 47, 31, 14, 57, 94, 17, 82, 7, 37, 64, 4, 83, 52 }; //20,82
uint[] test_values_3 = { 0, 100 }; // 0,100
uint[] test_values_4 = { }; // CONST.MAX_SIG_STR,0
uint[] test_values_5 = { 5, 5, 5}; // 5,5
uint[] test_values_6 = { 0, 100, 100, 100, 100 }; // 40,100
uint[] test_values_7 = { 0, 0, 0, 0, 100 }; // 0,60
List<uint> test_values = new List<uint>();
MinMaxSignalStrength min_max = new MinMaxSignalStrength();
test_values.AddRange(test_values_1);
MinMax expected_min_max = new MinMax(9,73);
MinMax actual_min_max = min_max.calculate_min_max_signal_strength(test_values) ;
Specify.That(actual_min_max.ToString()).ShouldEqual(expected_min_max.ToString());
test_values.Clear();
test_values.AddRange(test_values_2);
expected_min_max.min = 20;
expected_min_max.max = 82;
actual_min_max = min_max.calculate_min_max_signal_strength(test_values);
Specify.That(actual_min_max.ToString()).ShouldEqual(expected_min_max.ToString());
test_values.Clear();
test_values.AddRange(test_values_3);
expected_min_max.min = 0;
expected_min_max.max = 100;
actual_min_max = min_max.calculate_min_max_signal_strength(test_values);
Specify.That(actual_min_max.ToString()).ShouldEqual(expected_min_max.ToString());
test_values.Clear();
test_values.AddRange(test_values_4);
expected_min_max.min = Constant.MAX_SIG_STR;
expected_min_max.max = 0;
actual_min_max = min_max.calculate_min_max_signal_strength(test_values);
Specify.That(actual_min_max.ToString()).ShouldEqual(expected_min_max.ToString());
test_values.Clear();
test_values.AddRange(test_values_5);
expected_min_max.min = 5;
expected_min_max.max = 5;
actual_min_max = min_max.calculate_min_max_signal_strength(test_values);
Specify.That(actual_min_max.ToString()).ShouldEqual(expected_min_max.ToString());
test_values.Clear();
test_values.AddRange(test_values_6);
expected_min_max.min = 40;
expected_min_max.max = 100;
actual_min_max = min_max.calculate_min_max_signal_strength(test_values);
Specify.That(actual_min_max.ToString()).ShouldEqual(expected_min_max.ToString());
test_values.Clear();
test_values.AddRange(test_values_7);
expected_min_max.min = 0;
expected_min_max.max = 60;
actual_min_max = min_max.calculate_min_max_signal_strength(test_values);
Specify.That(actual_min_max.ToString()).ShouldEqual(expected_min_max.ToString());
}
public MinMax calculate_min_max_signal_strength(List<uint> signal_strengths)
{
MinMax min_max = new MinMax(0, 0);
if (signal_strengths == null || signal_strengths.Count == 0)
{
min_max.min = Constant.MAX_SIG_STR;
return min_max;
}
int min, max;
uint num_signal_strengths = (uint)signal_strengths.Count;
uint sum = sum_uint_list(signal_strengths);
double average = divide(sum, num_signal_strengths);
double standard_deviation = std_dev(average, signal_strengths);
min = (int)Math.Round(average - standard_deviation);
max = (int)Math.Round(average + standard_deviation);
if (max > Constant.MAX_SIG_STR)
{
min_max.max = Constant.MAX_SIG_STR;
}
else
{
min_max.max = (uint)max;
}
if (min < Constant.MIN_SIG_STR)
{
min_max.min = Constant.MIN_SIG_STR;
}
else
{
min_max.min = (uint)min;
}
return min_max;
}