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using System;
using System.Collections;
/// <summary>
/// System.Math.Cos(System.Double)
/// </summary>
public class MathCos
{
public static int Main(string[] args)
{
MathCos cos = new MathCos();
TestLibrary.TestFramework.BeginTestCase("Testing System.Math.Cos(System.Double)...");
if (cos.RunTests())
{
TestLibrary.TestFramework.EndTestCase();
TestLibrary.TestFramework.LogInformation("PASS");
return 100;
}
else
{
TestLibrary.TestFramework.EndTestCase();
TestLibrary.TestFramework.LogInformation("FAIL");
return 0;
}
}
public bool RunTests()
{
bool retVal = true;
TestLibrary.TestFramework.LogInformation("[Positive]");
retVal = PosTest1() && retVal;
retVal = PosTest2() && retVal;
retVal = PosTest3() && retVal;
retVal = PosTest4() && retVal;
retVal = PosTest5() && retVal;
retVal = PosTest6() && retVal;
return retVal;
}
public bool PosTest1()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest1: Verify the value of cosine(0)...");
try
{
double value = Math.Cos(0);
if (value != 1)
{
TestLibrary.TestFramework.LogError("001", "cosine(0) should be 1!");
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("002", "Unexpected exception occurs: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest2()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest2: Verify the value of cosine(Math.PI/2)...");
try
{
double value = Math.Cos(Math.PI/2);
if (Math.Abs(1000000000*value) >= 0.1)
{
TestLibrary.TestFramework.LogError("003", "cosine(Math.PI/2) should be 0!");
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("004", "Unexpected exception occurs: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest3()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest3: Verify the value of cosine(Math.PI)...");
try
{
double value = Math.Cos(Math.PI);
if (value != -1)
{
TestLibrary.TestFramework.LogError("005", "cosine(Math.PI) should be -1!");
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("006", "Unexpected exception occurs: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest4()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest4: Verify the value of cosine(3*Math.PI/2)...");
try
{
double value = Math.Cos(3*Math.PI/2);
if (Math.Abs(1000000000 * value) >= 0.1)
{
TestLibrary.TestFramework.LogError("007", "cosine(3*Math.PI/2) should be 0!");
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("008", "Unexpected exception occurs: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest5()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest5: Verify the value of cosine(2*Math.PI) is equal to cosine(0)...");
try
{
double value1 = Math.Cos(0);
double value2 = Math.Cos(2*Math.PI);
if (value1 != value2)
{
TestLibrary.TestFramework.LogError("009", "cosine(3*Math.PI/2) should be 0!");
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("010", "Unexpected exception occurs: " + e);
retVal = false;
}
return retVal;
}
public bool PosTest6()
{
bool retVal = true;
TestLibrary.TestFramework.BeginScenario("PosTest6: Verify the value of cosine(number) is between -1 and 1...");
try
{
double coefficient = TestLibrary.Generator.GetDouble(-55);
if (Math.Cos(2 * coefficient * Math.PI) > 1 || Math.Cos(2 * coefficient * Math.PI) < -1)
{
TestLibrary.TestFramework.LogError("011","The scale of cosine is wrong!");
retVal = false;
}
}
catch (Exception e)
{
TestLibrary.TestFramework.LogError("012", "Unexpected exception occurs: " + e);
retVal = false;
}
return retVal;
}
}
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