using Microsoft.VisualStudio.TestTools.UnitTesting;
using System;
using Calculator;

namespace UnitTests
{
    [TestClass]
    public class UnitTest1
    {
        [TestMethod]
        public void TestMethodAreEqual_true()
        {
            double exepted = 15;
            double real = MainWindow.Summ(7,8);
            Assert.AreEqual(exepted, real);
        }
        [TestMethod]
        public void TestMethodAreNotEqual_true()
        {
            double exepted = 0;
            double real = MainWindow.Root(4);
            Assert.AreNotEqual(exepted, real);
        }
        [TestMethod]
        public void TestMethodIsTrue_true()
        {
            double exepted = 3125;
            double real = MainWindow.Degree(5, 5);
            Assert.IsTrue(exepted == real);
        }
        [TestMethod]
        public void TestMethodIsFalse_false()
        {
            double exepted = 5;
            double real = MainWindow.Subtraction(1, 5);
            Assert.IsFalse(exepted == real);
        }
        [TestMethod]
        public void TestMethodIsType_trueDouble()
        {
            double excepted = MainWindow.Multiplication(2,1);
            Assert.IsInstanceOfType(excepted, typeof(double));
        }
        [TestMethod]
        public void TestMethodIsType_falseInt()
        {
            double excepted = MainWindow.Divide(5, 5);
            Assert.IsNotInstanceOfType(excepted, typeof(int));
        }
        [TestMethod]
        public void TestMethodIsNotNull_true()
        {
            double excepted = MainWindow.Procent(21, 1);
            Assert.IsNotNull(excepted);
        }
        [TestMethod]
        public void TestMethodSinAreNotEquals_true()
        {
            double excepted = 1;
            double real = MainWindow.Sin(20);
            Assert.AreNotEqual(excepted, real);
        }
        [TestMethod]
        public void TestMethodCtgIsTrue_true()
        {
            double exepted = 0;
            double real = MainWindow.Ctg(1.5708);
            Assert.IsFalse(exepted == real);
        }
        [TestMethod]
        public void TestMethodLogAreEqual_true()
        {
            double exepted = 0;
            double real = MainWindow.Log(1);
            Assert.AreEqual(exepted, real);
        }
        [TestMethod]
        public void TestMethodThrowExceptionNull()
        {
            Assert.ThrowsException<AssertFailedException>(() => Assert.ThrowsException<SystemException>(() => MainWindow.Summ(Convert.ToDouble(null), 5)));
        }
        [TestMethod]
        public void TestMethodThrowExceptionBigData()
        {
            Assert.ThrowsException<AssertFailedException>(() => Assert.ThrowsException<SystemException>(() => MainWindow.Subtraction(Convert.ToDouble(3000000000), 5)));
        }
        [TestMethod]
        public void TestMethodThrowExceptionSymbols()
        {
            Assert.ThrowsException<AssertFailedException>(() => Assert.ThrowsException<SystemException>(() => MainWindow.Multiplication(Convert.ToDouble("hello"), 5)));
        }
        [TestMethod]
        public void TestMethodThrowExceptionDivideOnZero()
        {
            Assert.ThrowsException<AssertFailedException>(() => Assert.ThrowsException<SystemException>(() => MainWindow.Divide(23, 0)));
        }
        [TestMethod]
        public void TestMethodThrowExceptionSqrtZero()
        {
            Assert.ThrowsException<AssertFailedException>(() => Assert.ThrowsException<SystemException>(() => MainWindow.Root(0)));
        }
    }
}