Set environment variables for UWP test results (xamarin#11724)

* Set environment variables and ignore context

* Update Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Github5623.xaml.cs

* - print vars

* - POW POW POWERSHELL

* - remove print

* - fix invoke call

* - set variables via msbuild

* - delete file if present

* - set all at once and output result

* - messages

* - builid system

* - vars

* - print all the things

.gitignore

@@ -74,3 +74,4 @@ caketools/
 Visual Studio 2019/**
 TestResult.xml
 build/packages
+WriteDevopsVariables.csproj

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla46363_2.cs

@@ -15,6 +15,7 @@ namespace Xamarin.Forms.Controls.Issues
 	[Category(UITestCategories.ListView)]
 	[Category(UITestCategories.Cells)]
 	[Category(UITestCategories.ContextActions)]
+	[Category(UITestCategories.UwpIgnore)]
 	[NUnit.Framework.Category(Core.UITests.UITestCategories.Bugzilla)]
 #endif
 

Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Github5623.xaml.cs

@@ -192,4 +192,4 @@ public Model5623(bool isUneven)
 			HeightText = "(Height: " + Height + ")";
 		}
 	}
-}
+}

build.cake

@@ -25,6 +25,7 @@ PowerShell:
 #addin "nuget:?package=Cake.Boots&version=1.0.2.437"
 #addin "nuget:?package=Cake.AppleSimulator&version=0.2.0"
 #addin "nuget:?package=Cake.FileHelpers&version=3.2.1"
+
 //////////////////////////////////////////////////////////////////////
 // TOOLS
 //////////////////////////////////////////////////////////////////////
@@ -518,7 +519,7 @@ Task("cg-uwp-run-tests")
     .IsDependentOn("_cg-uwp-run-tests");
 
 Task("_cg-uwp-run-tests")
-    .Does(() =>
+    .Does((ctx) =>
     {
         System.Diagnostics.Process process = null;
         if(!isHostedAgent)
@@ -553,14 +554,33 @@ Task("_cg-uwp-run-tests")
 
             NUnit3(new [] { UWP_TEST_LIBRARY }, settings);
         }
-        finally
+        catch
         {
+            SetEnvironmentVariables();
+            throw;
+        }
+        finally
+        { 
             try
             {
                 process?.Kill();
             }
             catch{}
         }
+
+        SetEnvironmentVariables();
+
+        void SetEnvironmentVariables()
+        {
+            var doc = new System.Xml.XmlDocument();
+            doc.Load("TestResult.xml");
+            var root = doc.DocumentElement;
+
+            foreach(System.Xml.XmlAttribute attr in root.Attributes)
+            {
+                SetEnvironmentVariable($"NUNIT_{attr.Name}", attr.Value, ctx);
+            }
+        }
     });
 
 Task("cg-uwp-run-tests-ci")
@@ -1039,26 +1059,6 @@ Task("DeployAndroid")
         AmStartActivity("AndroidControlGallery.AndroidControlGallery/md546303760447087909496d02dc7b17ae8.Activity1");
     });
 
-Task("_PrintEnvironmentVariables")
-    .Does(() => 
-    {       
-        var envVars = EnvironmentVariables();
-
-        string path;
-        if (envVars.TryGetValue("PATH", out path))
-        {
-            Information("Path: {0}", path);
-        }
-
-        foreach(var envVar in envVars)
-        {
-            Information(
-                "Key: {0}\tValue: \"{1}\"",
-                envVar.Key,
-                envVar.Value
-                );
-        }
-    });
 
 //////////////////////////////////////////////////////////////////////
 // TASK TARGETS
@@ -1158,3 +1158,37 @@ AppleSimulator GetIosSimulator()
     // Look for a matching simulator on the system
     return iosSimulators.First (s => s.Name == IOS_SIM_NAME && s.Runtime == IOS_SIM_RUNTIME);
 }
+
+public void PrintEnvironmentVariables()
+{
+    var envVars = EnvironmentVariables();
+
+    string path;
+    if (envVars.TryGetValue("PATH", out path))
+    {
+        Information("Path: {0}", path);
+    }
+
+    foreach(var envVar in envVars)
+    {
+        Information(
+            "Key: {0}\tValue: \"{1}\"",
+            envVar.Key,
+            envVar.Value
+            );
+    };
+}
+
+public void SetEnvironmentVariable(string key, string value, ICakeContext context)
+{
+    var buildSystem = context.BuildSystem();
+    Information("Setting: {0} to {1}", key, value);
+    if(isCIBuild)
+    {
+        buildSystem.AzurePipelines.Commands.SetVariable(key, value);
+    }
+    else
+    {
+        System.Environment.SetEnvironmentVariable(key, value);
+    }
+}