create new building target 'GenerateTests' (#3087)

Author: changlong-liu

src/AutoRest.CSharp/build/CodeGeneration.targets

@@ -69,6 +69,26 @@
     <Exec Command="npx autorest@$(AutoRestVersion) --max-memory-size=8192 --skip-csproj --skip-upgrade-check --version=$(AutoRestCoreVersion) $(AutoRestTestsInput) $(AutoRestAdditionalParameters) --use=$(MSBuildThisFileDirectory)../tools/net6.0/any/ --output-folder=$(MSBuildProjectDirectory)/Generated --clear-output-folder=true --shared-source-folders=&quot;$(AzureCoreSharedCodeDirectory);$(AutoRestSharedCodeDirectory)&quot; --testmodeler={}" />
   </Target>
 
+  <Target Name="GenerateTests" Condition="'$(AutoRestTestsInput)' != ''">
+    <PropertyGroup>
+
+    </PropertyGroup>
+
+    <ReadLinesFromFile File="$(AutoRestTestsInput)">
+      <Output TaskParameter="Lines" ItemName="AutoRestInputLines"/>
+    </ReadLinesFromFile>
+
+    <ItemGroup>
+      <GithubUrls Include="$([System.Text.RegularExpressions.Regex]::Match('%(AutoRestInputLines.Identity)', 'https?://(raw.)?github.+'))" />
+      <GithubUrlsWithoutIssues Include="%(GithubUrls.Identity)" Condition="! ($([System.Text.RegularExpressions.Regex]::IsMatch('%(GithubUrls.Identity)', '/issues/\d+')))" />
+      <GithubUrlsWithoutHash Include="%(GithubUrlsWithoutIssues.Identity)" Condition="! ($([System.Text.RegularExpressions.Regex]::IsMatch('%(GithubUrlsWithoutIssues.Identity)', '[\w\d]{40}')))" />
+    </ItemGroup>
+
+    <Error Text="Following GitHub URLs do not contain commit hash: @(GithubUrlsWithoutHash) please use permalinks for code generation inputs (see https://help.github.com/en/github/managing-files-in-a-repository/getting-permanent-links-to-files) " Condition="'@(GithubUrlsWithoutHash)' != ''" />
+
+    <Exec Command="npx autorest@$(AutoRestVersion) --max-memory-size=8192 --skip-csproj --skip-upgrade-check --version=$(AutoRestCoreVersion) $(AutoRestTestsInput) $(AutoRestAdditionalParameters) --use=$(MSBuildThisFileDirectory)../tools/net6.0/any/ --output-folder=$(MSBuildProjectDirectory)/Generated --clear-output-folder=true --shared-source-folders=&quot;$(AzureCoreSharedCodeDirectory);$(AutoRestSharedCodeDirectory)&quot; --testmodeler={}" />
+  </Target>
+
   <PropertyGroup Condition="'$(_GenerateCode)' == 'true'">
     <NoWarn>$(NoWarn);CA1812</NoWarn>
   </PropertyGroup>