diff --git a/.gitea/workflows/test.yml b/.gitea/workflows/test.yml
index e69de29..eb2706c 100644
--- a/.gitea/workflows/test.yml
+++ b/.gitea/workflows/test.yml
@@ -0,0 +1,20 @@
+name: Tests
+
+on: push
+
+jobs:
+  tests:
+    name: Unit Testing1
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          # The repo is on a custom server https://gitea.louisgallet.fr/EPITA-TP-PROG/RiderAndUnitTest.git
+          repository: "EPITA-TP-PROG/B2B-Training"
+      - uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '7.0.x'
+      - name: "🏗️ Build"
+        run: dotnet build
+      - name: "✅ Test"
+        run: dotnet test
\ No newline at end of file
diff --git a/.idea/.idea.B2BEpita/.idea/indexLayout.xml b/.idea/.idea.B2BEpita/.idea/indexLayout.xml
new file mode 100644
index 0000000..7b08163
--- /dev/null
+++ b/.idea/.idea.B2BEpita/.idea/indexLayout.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="UserContentModel">
+    <attachedFolders />
+    <explicitIncludes />
+    <explicitExcludes />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/.idea.B2BEpita/.idea/vcs.xml b/.idea/.idea.B2BEpita/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/.idea.B2BEpita/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/B2BEpita.sln b/B2BEpita.sln
index 15ac518..3a313a8 100644
--- a/B2BEpita.sln
+++ b/B2BEpita.sln
@@ -2,6 +2,8 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Iteration", "Iteration\Iteration.csproj", "{57C97023-347E-42B2-B314-9509F78E84B3}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Tests", "Tests\Tests.csproj", "{A838FD78-1D97-4191-91BF-FF439C9FB918}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -12,5 +14,9 @@ Global
 		{57C97023-347E-42B2-B314-9509F78E84B3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{57C97023-347E-42B2-B314-9509F78E84B3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{57C97023-347E-42B2-B314-9509F78E84B3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A838FD78-1D97-4191-91BF-FF439C9FB918}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A838FD78-1D97-4191-91BF-FF439C9FB918}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A838FD78-1D97-4191-91BF-FF439C9FB918}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A838FD78-1D97-4191-91BF-FF439C9FB918}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal
diff --git a/Iteration/Iterations.cs b/Iteration/Iterations.cs
index 2317316..28708cd 100644
--- a/Iteration/Iterations.cs
+++ b/Iteration/Iterations.cs
@@ -2,5 +2,64 @@ namespace Iteration;
 
 public class Iterations
 {
-    
+    public static int Reverseint(int n)
+    {
+        int result = 0;
+        if (n > 4)
+        {
+            for (int i = 0; i <= n; i++)
+            {
+                result = result * 10 + n % 10;
+                n /= 10;
+            }
+
+            if (n == 1)
+            {
+                return result * 10 + n;
+            }
+        }
+        else if (n < 4)
+        {
+            for (int i = 0; i >= n; i--)
+            {
+                result = result * 10 + n % 10;
+                n /= 10;
+            }
+
+            if (n == -1)
+            {
+                return result * 10 + n;
+            }
+        }
+        else
+        {
+            return n;
+        }
+
+    return result;
+    }
+
+    public static bool FindSub(string s, string sub)
+    {
+        if (sub == "")
+        {
+            throw new ArgumentException("sub cannot be empty");
+        }
+        string phrase = s;
+        string[] word = s.Split(' ');
+        foreach (var mot in word)
+        {
+            if (mot == sub)
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public static bool FirstUpper(string s, string sub)
+    {
+        return true;
+    }
 }
\ No newline at end of file
diff --git a/Iteration/Program.cs b/Iteration/Program.cs
index e5dff12..7159aa4 100644
--- a/Iteration/Program.cs
+++ b/Iteration/Program.cs
@@ -1,3 +1,3 @@
 // See https://aka.ms/new-console-template for more information
 
-Console.WriteLine("Hello, World!");
\ No newline at end of file
+Console.WriteLine();
\ No newline at end of file
diff --git a/Tests/Interatif/IterationTests.cs b/Tests/Interatif/IterationTests.cs
index 22474fc..4b108db 100644
--- a/Tests/Interatif/IterationTests.cs
+++ b/Tests/Interatif/IterationTests.cs
@@ -2,5 +2,27 @@ namespace Tests.Interatif;
 
 public class IterationTests
 {
+    [Theory]
+    [InlineData(123, 321)]
+    [InlineData(1234, 4321)]
+    [InlineData(4, 4)]
+    [InlineData(-4, -4)]
+    [InlineData(24, 42)]
+    [InlineData(-123456, -654321)]
     
+    public void ReverseintTest(int n, int expected)
+    {
+        int actual = Iteration.Iterations.Reverseint(n);
+        Assert.Equal(expected, actual);
+    }
+    
+    [Theory]
+    [InlineData("Clement est le plus beau", "moche", false)]
+    [InlineData("Clement est le plus beau", "beau", true)]
+    
+    public void FindSubTest(string s, string sub, bool expected)
+    {
+        bool actual = Iteration.Iterations.FindSub(s, sub);
+        Assert.Equal(expected, actual);
+    }
 }
\ No newline at end of file
diff --git a/Tests/Tests.csproj b/Tests/Tests.csproj
index ba8cf18..9b7e8f8 100644
--- a/Tests/Tests.csproj
+++ b/Tests/Tests.csproj
@@ -22,4 +22,8 @@
         </PackageReference>
     </ItemGroup>
 
+    <ItemGroup>
+      <ProjectReference Include="..\Iteration\Iteration.csproj" />
+    </ItemGroup>
+
 </Project>