Added test for comit id

FitConnect/FitConnect.csproj

@@ -49,6 +49,9 @@
         <EmbeddedResource Include="TrustedRootCertificates\PCA-1-Verwaltung-17.pem" />
         <None Remove="Certificates\PCA-1-Verwaltung-20.pem" />
         <EmbeddedResource Include="TrustedRootCertificates\PCA-1-Verwaltung-20.pem" />
+        <None Update="commitId.tmp">
+          <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+        </None>
     </ItemGroup>
 
     <ItemGroup>
@@ -63,4 +66,8 @@
         <Compile Remove="Services\Models\v1\Api\ReplyChannel.cs" />
     </ItemGroup>
 
+    <Target Name="PreBuild" BeforeTargets="PreBuildEvent">
+      <Exec Command="git rev-parse --short HEAD &gt; commitId.tmp" />
+    </Target>
+
 </Project>

FitConnect/ProjectSpecification.cs

@@ -18,7 +18,9 @@ internal static class ProjectSpecification {
 
     private static string? GetCommitId() {
         const string commitFileName = "commitId.tmp";
-        return File.Exists(commitFileName) ? File.ReadAllText(commitFileName) : null;
+        return File.Exists(commitFileName)
+            ? File.ReadAllLines(commitFileName).First()
+            : "development";
     }
 
     public static byte[] CalculateCallbackHmac(string callbackSecret, long timestamp, string body) {