Update nunit for Unit Tests running with .net7

Source/Platforms/DotNet/NUnit/NUnit3TestAdapter.props

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
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+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <Visible>False</Visible>
+    </None>
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+      <Visible>False</Visible>
+    </None>
+    <None Include="$(MSBuildThisFileDirectory)nunit.engine.dll">
+      <Link>nunit.engine.dll</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <Visible>False</Visible>
+    </None>
+    <None Include="$(MSBuildThisFileDirectory)nunit.engine.api.dll">
+      <Link>nunit.engine.api.dll</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <Visible>False</Visible>
+    </None>
+    <None Include="$(MSBuildThisFileDirectory)nunit.engine.core.dll">
+      <Link>nunit.engine.core.dll</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <Visible>False</Visible>
+    </None>
+    <None Include="$(MSBuildThisFileDirectory)testcentric.engine.metadata.dll">
+      <Link>testcentric.engine.metadata.dll</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <Visible>False</Visible>
+    </None>
+  </ItemGroup>
+</Project>

Source/Platforms/DotNet/NUnit/agents/net7.0/nunit-agent.deps.json

@@ -0,0 +1,305 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v7.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v7.0": {
+      "nunit-agent/3.16.0": {
+        "dependencies": {
+          "nunit.engine.api": "1.0.0",
+          "nunit.engine.core": "1.0.0"
+        },
+        "runtime": {
+          "nunit-agent.dll": {}
+        }
+      },
+      "Microsoft.Extensions.DependencyModel/3.1.0": {
+        "dependencies": {
+          "System.Text.Json": "4.7.0"
+        },
+        "runtime": {
+          "lib/netstandard2.0/Microsoft.Extensions.DependencyModel.dll": {
+            "assemblyVersion": "3.1.0.0",
+            "fileVersion": "3.100.19.56502"
+          }
+        }
+      },
+      "Microsoft.NETCore.Platforms/1.1.0": {},
+      "Microsoft.NETCore.Targets/1.1.0": {},
+      "Microsoft.Win32.Registry/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "System.Collections": "4.3.0",
+          "System.Globalization": "4.3.0",
+          "System.Resources.ResourceManager": "4.3.0",
+          "System.Runtime": "4.3.0",
+          "System.Runtime.Extensions": "4.3.0",
+          "System.Runtime.Handles": "4.3.0",
+          "System.Runtime.InteropServices": "4.3.0"
+        }
+      },
+      "System.Collections/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.Globalization/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.IO/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0",
+          "System.Text.Encoding": "4.3.0",
+          "System.Threading.Tasks": "4.3.0"
+        }
+      },
+      "System.Reflection/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.IO": "4.3.0",
+          "System.Reflection.Primitives": "4.3.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.Reflection.Primitives/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.Resources.ResourceManager/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Globalization": "4.3.0",
+          "System.Reflection": "4.3.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.Runtime/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0"
+        }
+      },
+      "System.Runtime.Extensions/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.Runtime.Handles/4.3.0": {
+        "dependencies": {
+          "Microsoft.NETCore.Platforms": "1.1.0",
+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.Runtime.InteropServices/4.3.0": {
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+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Reflection": "4.3.0",
+          "System.Reflection.Primitives": "4.3.0",
+          "System.Runtime": "4.3.0",
+          "System.Runtime.Handles": "4.3.0"
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+      "System.Text.Encoding/4.3.0": {
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+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "System.Text.Json/4.7.0": {},
+      "System.Threading.Tasks/4.3.0": {
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+          "Microsoft.NETCore.Targets": "1.1.0",
+          "System.Runtime": "4.3.0"
+        }
+      },
+      "TestCentric.Metadata/1.7.1": {
+        "runtime": {
+          "lib/netstandard2.0/testcentric.engine.metadata.dll": {
+            "assemblyVersion": "1.7.1.0",
+            "fileVersion": "1.7.1.0"
+          }
+        }
+      },
+      "nunit.engine.api/1.0.0": {
+        "runtime": {
+          "nunit.engine.api.dll": {}
+        }
+      },
+      "nunit.engine.core/1.0.0": {
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+          "Microsoft.Win32.Registry": "4.3.0",
+          "TestCentric.Metadata": "1.7.1",
+          "nunit.engine.api": "1.0.0"
+        },
+        "runtime": {
+          "nunit.engine.core.dll": {}
+        }
+      }
+    }
+  },
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+      "serviceable": false,
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+      "hashPath": "microsoft.extensions.dependencymodel.3.1.0.nupkg.sha512"
+    },
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+    },
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+}

Source/Platforms/DotNet/NUnit/agents/net7.0/nunit-agent.runtimeconfig.json

@@ -0,0 +1,22 @@
+{
+  "runtimeOptions": {
+    "tfm": "net7.0",
+    "frameworks": [
+      {
+        "name": "Microsoft.NETCore.App",
+        "version": "7.0.0"
+      },
+      {
+        "name": "Microsoft.WindowsDesktop.App",
+        "version": "7.0.0"
+      },
+      {
+        "name": "Microsoft.AspNetCore.App",
+        "version": "7.0.0"
+      }
+    ],
+    "configProperties": {
+      "System.Reflection.Metadata.MetadataUpdater.IsSupported": false
+    }
+  }
+}

Source/Platforms/DotNet/NUnit/nunit3-console.exe.config

@@ -1,12 +1,29 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
+  <!--
+   The console runner runs under .NET 2.0 or higher. 
+   The setting useLegacyV2RuntimeActivationPolicy only applies 
+   under .NET 4.0 and permits use of mixed mode assemblies, 
+   which would otherwise not load correctly.
+  -->
   <startup useLegacyV2RuntimeActivationPolicy="true">
     <supportedRuntime version="v4.0.30319" />
+    <supportedRuntime version="v2.0.50727" />
   </startup>
   <runtime>
+    <!-- Ensure that test exceptions don't crash NUnit -->
     <legacyUnhandledExceptionPolicy enabled="1" />
+    <!--
+     Since legacyUnhandledExceptionPolicy keeps the console from being killed even though an NUnit framework
+     test worker thread is killed, this is needed to prevent a hang. NUnit framework can only handle these
+     exceptions when this config element is present. (Or if future versions of NUnit framework drop support
+     for partial trust which would enable it to use [HandleProcessCorruptedStateExceptions].)
+    -->
     <legacyCorruptedStateExceptionsPolicy enabled="true" />
+    <!-- Run partial trust V2 assemblies in full trust under .NET 4.0 -->
     <loadFromRemoteSources enabled="true" />
+    <!-- Enable reading source information from Portable and Embedded PDBs when running applications -->
+    <!-- built against previous .NET Framework versions on .NET Framework 4.7.2 -->
     <AppContextSwitchOverrides value="Switch.System.Diagnostics.IgnorePortablePDBsInStackTraces=false" />
   </runtime>
 </configuration>