Introduce "TestEnabled" flag for testing async timeout tests

Author: cheenamalhotra

build.proj

@@ -12,10 +12,11 @@
     <!-- Flag to control if Windows drivers should be built or not -->
     <IsEnabledWindows Condition="'$(IsEnabledWindows)' == '' AND '$(TargetsWindows)' == 'true'">true</IsEnabledWindows>
     <IsEnabledWindows Condition="'$(TargetsUnix)' == 'true'">false</IsEnabledWindows>
+    <TestEnabled Condition="$(TestEnabled) == ''">false</TestEnabled>
     <TestOS Condition="'$(TestTargetOS)' == '' AND '$(TargetsWindows)' == 'true'">Windows</TestOS>
     <TestOS Condition="'$(TestTargetOS)' == '' AND '$(TargetsUnix)' == 'true'">Unix</TestOS>
     <GenerateNuget Condition="'$(GenerateNuget)' == ''">true</GenerateNuget>
-    <ProjectProperties>Configuration=$(Configuration);AssemblyFileVersion=$(AssemblyFileVersion);TargetsWindows=$(TargetsWindows);TargetsUnix=$(TargetsUnix);</ProjectProperties>
+    <ProjectProperties>Configuration=$(Configuration);AssemblyFileVersion=$(AssemblyFileVersion);TargetsWindows=$(TargetsWindows);TargetsUnix=$(TargetsUnix);TestEnabled=$(TestEnabled);</ProjectProperties>
     <TestProjectProperties>BuildProjectReferences=false;$(ProjectProperties);</TestProjectProperties>
   </PropertyGroup>
 

src/Microsoft.Data.SqlClient/netcore/src/Microsoft.Data.SqlClient.csproj

@@ -11,6 +11,7 @@
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
     <TargetGroup Condition="$(TargetFramework.StartsWith('netcoreapp'))">netcoreapp</TargetGroup>
     <TargetGroup Condition="$(TargetFramework.StartsWith('netstandard'))">netstandard</TargetGroup>
+    <DefineConstants Condition="'$(TestEnabled)'=='true'">$(DefineConstants);TEST_ENABLED;</DefineConstants>
     <Configurations>Debug;Release;netcoreapp2.1-Debug;netcoreapp2.1-Release;netcoreapp3.1-Debug;netcoreapp3.1-Release</Configurations>
     <Platforms>AnyCPU;x64;x86</Platforms>
     <IntermediateOutputPath>$(ObjFolder)$(Configuration).$(Platform)\$(AssemblyName)\netcore\</IntermediateOutputPath>

src/Microsoft.Data.SqlClient/netcore/src/Microsoft/Data/SqlClient/TdsParserStateObject.cs

@@ -136,11 +136,13 @@ public TimeoutState(int value)
         internal volatile bool _attentionSent;              // true if we sent an Attention to the server
         internal volatile bool _attentionSending;
 
+#if TEST_ENABLED
         // Below 2 properties are used to enforce timeout delays in code to 
         // reproduce issues related to theadpool starvation and timeout delay.
         // It should always be set to false by default, and only be enabled during testing.
         internal bool _enforceTimeoutDelay = false;
         internal int _enforcedTimeoutDelayInMilliSeconds = 5000;
+#endif
 
         private readonly LastIOTimer _lastSuccessfulIOTimer;
 
@@ -2288,11 +2290,12 @@ public bool IsTimeoutStateExpired
         }
         private void OnTimeoutAsync(object state)
         {
+#if TEST_ENABLED
             if (_enforceTimeoutDelay)
             {
                 Thread.Sleep(_enforcedTimeoutDelayInMilliSeconds);
             }
-
+#endif
             int currentIdentityValue = _timeoutIdentityValue;
             TimeoutState timeoutState = (TimeoutState)state;
             if (timeoutState.IdentityValue == _timeoutIdentityValue)

src/Microsoft.Data.SqlClient/netfx/src/Microsoft.Data.SqlClient.csproj

@@ -21,6 +21,7 @@
      We should remove ResolveComReferenceSilent as soon as we can remove the dependency on mscoree. -->
     <ResolveComReferenceSilent>True</ResolveComReferenceSilent>
     <DefineConstants>$(DefineConstants);NETFRAMEWORK;</DefineConstants>
+    <DefineConstants Condition="'$(TestEnabled)'=='true'">$(DefineConstants);TEST_ENABLED;</DefineConstants>
   </PropertyGroup>
   <PropertyGroup>
     <TargetFrameworkMonikerAssemblyAttributesPath>$([System.IO.Path]::Combine('$(IntermediateOutputPath)','$(GeneratedSourceFileName)'))</TargetFrameworkMonikerAssemblyAttributesPath>

src/Microsoft.Data.SqlClient/netfx/src/Microsoft/Data/SqlClient/TdsParserStateObject.cs

@@ -129,11 +129,13 @@ internal int ObjectID
         internal bool _attentionReceived = false;               // NOTE: Received is not volatile as it is only ever accessed\modified by TryRun its callees (i.e. single threaded access)
         internal volatile bool _attentionSending = false;
 
+#if TEST_ENABLED
         // Below 2 properties are used to enforce timeout delays in code to 
         // reproduce issues related to theadpool starvation and timeout delay.
         // It should always be set to false by default, and only be enabled during testing.
         internal bool _enforceTimeoutDelay = false;
         internal int _enforcedTimeoutDelayInMilliSeconds = 5000;
+#endif
 
         private readonly LastIOTimer _lastSuccessfulIOTimer;
 
@@ -2373,11 +2375,13 @@ public bool IsTimeoutStateExpired
 
         private void OnTimeoutAsync(object state)
         {
+
+#if TEST_ENABLED
             if (_enforceTimeoutDelay)
             {
                 Thread.Sleep(_enforcedTimeoutDelayInMilliSeconds);
             }
-
+#endif
             int currentIdentityValue = _timeoutIdentityValue;
             TimeoutState timeoutState = (TimeoutState)state;
             if (timeoutState.IdentityValue == _timeoutIdentityValue)

src/Microsoft.Data.SqlClient/tests/ManualTests/SQL/AsyncTest/AsyncTimeoutTest.cs

@@ -92,7 +92,15 @@ private static void RunTest(AsyncAPI api, string commonObj, int timeoutDelay, bo
                 sqlConnection.Open();
                 if (timeoutDelay != 0)
                 {
-                    ConnectionHelper.SetEnforcedTimeout(sqlConnection, true, timeoutDelay);
+                    try
+                    {
+
+                        ConnectionHelper.SetEnforcedTimeout(sqlConnection, true, timeoutDelay);
+                    }
+                    catch
+                    {
+                        Assert.False(true, "Driver does not support explicit timeout delay support. Build all configurations with `/p:TestEnabled=true` property specified.");
+                    }
                 }
                 switch (commonObj)
                 {