diff --git a/BasicProgramming.sln b/BasicProgramming.sln
index 3893a10..28f5267 100644
--- a/BasicProgramming.sln
+++ b/BasicProgramming.sln
@@ -4,6 +4,8 @@ VisualStudioVersion = 17.5.2.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BasicProgramming", "BasicProgramming\BasicProgramming.csproj", "{F852DB4D-952E-CFAF-DFC6-298FB48C8A28}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BasicProgrammingUnitTest", "BasicProgrammingUnitTest\BasicProgrammingUnitTest.csproj", "{427B1690-1D9B-4002-A6DE-435867230BAC}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -14,6 +16,10 @@ Global
 		{F852DB4D-952E-CFAF-DFC6-298FB48C8A28}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F852DB4D-952E-CFAF-DFC6-298FB48C8A28}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F852DB4D-952E-CFAF-DFC6-298FB48C8A28}.Release|Any CPU.Build.0 = Release|Any CPU
+		{427B1690-1D9B-4002-A6DE-435867230BAC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{427B1690-1D9B-4002-A6DE-435867230BAC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{427B1690-1D9B-4002-A6DE-435867230BAC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{427B1690-1D9B-4002-A6DE-435867230BAC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/BasicProgrammingUnitTest/BasicProgrammingUnitTest.csproj b/BasicProgrammingUnitTest/BasicProgrammingUnitTest.csproj
new file mode 100644
index 0000000..e24ed82
--- /dev/null
+++ b/BasicProgrammingUnitTest/BasicProgrammingUnitTest.csproj
@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="../BasicProgramming/BasicProgramming.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+</Project>
diff --git a/BasicProgrammingUnitTest/BasicProgramming__BASIC.cs b/BasicProgrammingUnitTest/BasicProgramming__BASIC.cs
new file mode 100644
index 0000000..ec0cbc2
--- /dev/null
+++ b/BasicProgrammingUnitTest/BasicProgramming__BASIC.cs
@@ -0,0 +1,53 @@
+using static BasicProgramming.Program;
+
+namespace BasicProgrammingUnitTest;
+
+public class BasicProgramming__BASIC
+{
+    [Fact]
+    public void AddAndMultiply_TEST()
+    {
+        Assert.Equal(30, AddAndMultiply(2, 4, 5));
+    }
+
+    [Fact]
+    public void CToF_TEST()
+    {
+        Assert.Equal("T = 32F", CtoF(0));
+        Assert.Equal("T = 212F", CtoF(100));
+        Assert.Equal("Temperature below absolute zero!", CtoF(-300));
+    }
+
+    [Fact]
+    public void ElementaryOperations_TEST()
+    {
+        Assert.Equal([11, -5, 24, 0.375], ElementaryOperations(3, 8));
+    }
+
+    [Fact]
+    public void IsResultTheSame_TEST()
+    {
+        Assert.True(IsResultTheSame(2 + 2, 2 * 2));
+        Assert.False(IsResultTheSame(9 / 3, 16 - 1));
+    }
+
+    [Fact]
+    public void ModuloOperations_TEST()
+    {
+        Assert.Equal(1, ModuloOperations(8, 5, 2));
+    }
+
+    [Fact]
+    public void CubeOf_TEST()
+    {
+        Assert.Equal(8, CubeOf(2));
+        Assert.Equal(-166.375, CubeOf(-5.5));
+    }
+
+    [Fact]
+    public void SwapTwoNumbers_TEST()
+    {
+        Assert.Equal([45, 87], SwapTwoNumbers(87, 45));
+        Assert.Equal([2, -13], SwapTwoNumbers(-13, 2));
+    }
+}
diff --git a/BasicProgrammingUnitTest/BasicProgramming__STATEMENTS.cs b/BasicProgrammingUnitTest/BasicProgramming__STATEMENTS.cs
new file mode 100644
index 0000000..6e74ed8
--- /dev/null
+++ b/BasicProgrammingUnitTest/BasicProgramming__STATEMENTS.cs
@@ -0,0 +1,65 @@
+using static BasicProgramming.Program;
+
+namespace BasicProgrammingUnitTest;
+
+public class BasicProgramming__STATEMENTS
+{
+    [Fact]
+    public void AbsoluteValue_TEST()
+    {
+        Assert.Equal(6832, AbsoluteValue(6832));
+        Assert.Equal(392, AbsoluteValue(-392));
+    }
+
+    [Fact]
+    public void DivisibleBy2Or3_TEST()
+    {
+        Assert.Equal(450, DivisibleBy2Or3(15, 30));
+        Assert.Equal(180, DivisibleBy2Or3(2, 90));
+        Assert.Equal(19, DivisibleBy2Or3(7, 12));
+    }
+
+    [Fact]
+    public void IfConsistsOfUppercaseLetters_TEST()
+    {
+        Assert.False(IfConsistsOfUppercaseLetters("xyz"));
+        Assert.True(IfConsistsOfUppercaseLetters("DOG"));
+        Assert.False(IfConsistsOfUppercaseLetters("L9#"));
+    }
+
+    [Fact]
+    public void IfGreaterThanThirdOne_TEST()
+    {
+        Assert.True(IfGreaterThanThirdOne([2, 7, 12]));
+        Assert.False(IfGreaterThanThirdOne([-5, -8, 50]));
+    }
+
+    [Fact]
+    public void IfNumberIsEven_TEST()
+    {
+        Assert.False(IfNumberIsEven(721));
+        Assert.True(IfNumberIsEven(1248));
+    }
+
+    [Fact]
+    public void IfSortedAscending_TEST()
+    {
+        Assert.True(IfSortedAscending([3, 7, 10]));
+        Assert.False(IfSortedAscending([74, 62, 99]));
+    }
+
+    [Fact]
+    public void PositiveNegativeOrZero_TEST()
+    {
+        Assert.Equal("positive", PositiveNegativeOrZero(5.24));
+        Assert.Equal("zero", PositiveNegativeOrZero(0.0));
+        Assert.Equal("negative", PositiveNegativeOrZero(-994.53));
+    }
+
+    [Fact]
+    public void IfYearIsLeap_TEST()
+    {
+        Assert.True(IfYearIsLeap(2016));
+        Assert.False(IfYearIsLeap(2018));
+    }
+}
\ No newline at end of file