diff --git a/ConsoleApp7.sln b/ConsoleApp7.sln
new file mode 100644
index 0000000..dee8f9e
--- /dev/null
+++ b/ConsoleApp7.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34511.84
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsoleApp7", "ConsoleApp7\ConsoleApp7.csproj", "{61040B22-EADD-46F3-A628-82CF80B06678}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestProject1", "TestProject1\TestProject1.csproj", "{F3EB52FA-72CB-4895-802D-70EC77698EB5}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{61040B22-EADD-46F3-A628-82CF80B06678}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{61040B22-EADD-46F3-A628-82CF80B06678}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{61040B22-EADD-46F3-A628-82CF80B06678}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{61040B22-EADD-46F3-A628-82CF80B06678}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F3EB52FA-72CB-4895-802D-70EC77698EB5}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F3EB52FA-72CB-4895-802D-70EC77698EB5}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F3EB52FA-72CB-4895-802D-70EC77698EB5}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F3EB52FA-72CB-4895-802D-70EC77698EB5}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {9808E6F0-1D98-4417-B016-978A64E2CEA0}
+	EndGlobalSection
+EndGlobal
diff --git a/ConsoleApp7/ConsoleApp7.csproj b/ConsoleApp7/ConsoleApp7.csproj
new file mode 100644
index 0000000..2150e37
--- /dev/null
+++ b/ConsoleApp7/ConsoleApp7.csproj
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/ConsoleApp7/Program.cs b/ConsoleApp7/Program.cs
new file mode 100644
index 0000000..0fb38f3
--- /dev/null
+++ b/ConsoleApp7/Program.cs
@@ -0,0 +1,14 @@
+namespace ConsoleApp7
+{
+    public class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello, World!");
+        }
+        public static int Test()
+        {
+            return -1;
+        }
+    }
+}
diff --git a/TestProject1/GlobalUsings.cs b/TestProject1/GlobalUsings.cs
new file mode 100644
index 0000000..cefced4
--- /dev/null
+++ b/TestProject1/GlobalUsings.cs
@@ -0,0 +1 @@
+global using NUnit.Framework;
\ No newline at end of file
diff --git a/TestProject1/TestProject1.csproj b/TestProject1/TestProject1.csproj
new file mode 100644
index 0000000..3a2d6c5
--- /dev/null
+++ b/TestProject1/TestProject1.csproj
@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
+    <PackageReference Include="NUnit" Version="3.13.3" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" />
+    <PackageReference Include="NUnit.Analyzers" Version="3.6.1" />
+    <PackageReference Include="coverlet.collector" Version="6.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ConsoleApp7\ConsoleApp7.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Reference Include="SF2022UserNNLib">
+      <HintPath>C:\Users\Admin\Desktop\dem\SF2022UserNNLib.dll</HintPath>
+    </Reference>
+  </ItemGroup>
+
+</Project>
diff --git a/TestProject1/UnitTest1.cs b/TestProject1/UnitTest1.cs
new file mode 100644
index 0000000..c3858e9
--- /dev/null
+++ b/TestProject1/UnitTest1.cs
@@ -0,0 +1,37 @@
+namespace TestProject1
+{
+    public class Tests
+    {
+        [SetUp]
+        public void Setup()
+        {
+        }
+
+        [Test]
+        public void TestSomeMethod()
+        {
+            var expect = -1;
+            var result = ConsoleApp7.Program.Test();
+            Assert.AreEqual(expect, result);
+        }
+
+        [Test]
+        public void TestDllLib()
+        {            
+            string[] expect = {
+                "08:00-08:30",
+                "08:30-09:00",
+                "09:00-09:30",
+                "09:30-10:00",
+                "11:30-12:00"
+            };
+            TimeSpan[] startTimes = {new TimeSpan(10, 0, 0), new TimeSpan(11, 0, 0)};
+            int[] durations = { 60, 30 };
+            TimeSpan beginWorkingTime = new TimeSpan(8, 0, 0);
+            TimeSpan endWorkingTime = new TimeSpan(12, 0, 0);
+            int consultationTime = 30;
+            var result = SF2022UserNNLib.Calculations.AvailablePeriods(startTimes, durations, beginWorkingTime, endWorkingTime, consultationTime);
+            Assert.AreEqual(expect, result);
+        }
+    }
+}
\ No newline at end of file