MathExtTests.cs

using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using System.Text;
using System.Collections.Generic;

namespace Havit.Tests;

[TestClass]
public class MathExtTests
{
	[TestMethod]
	public void MathExt_IsInteger_ReturnsFalseForNull()
	{
		// arange
		string text = null;
		bool expected = false;

		// act
		var actual = Havit.MathExt.IsInteger(text);

		// assert
		Assert.AreEqual(expected, actual);
	}

	[TestMethod]
	public void MathExt_IsInteger_ReturnsTrueForPositiveInteger()
	{
		// arrange
		string text = "156";
		bool expected = true;

		// act
		var actual = Havit.MathExt.IsInteger(text);

		// assert
		Assert.AreEqual(expected, actual);
	}

	[TestMethod]
	public void MathExt_IsInteger_ReturnsTrueForNegativeInteger()
	{
		// arrange
		string text = "-156";
		bool expected = true;

		// act
		var actual = Havit.MathExt.IsInteger(text);

		// assert
		Assert.AreEqual(expected, actual);
	}

	[TestMethod]
	public void MathExt_IsIntegerTest_ReturnsFalseForEmptyString()
	{
		// arrange
		string text = String.Empty;
		bool expected = false;

		// act
		var actual = Havit.MathExt.IsInteger(text);

		// assert
		Assert.AreEqual(expected, actual);
	}

	[TestMethod]
	public void MathExt_IsIntegerTest_ReturnsFalseForInvalidValue()
	{
		// arrange
		string text = "10.";
		bool expected = false;

		// act
		var actual = Havit.MathExt.IsInteger(text);

		// assert
		Assert.AreEqual(expected, actual);
	}
}