From 8c9d19db2f3712cb96d37b2025124f16be08c086 Mon Sep 17 00:00:00 2001
From: "Jeremy D. Miller" <jeremydmiller@yahoo.com>
Date: Sun, 8 Nov 2026 11:00:01 -0600
Subject: [PATCH 1/2] Run the unit test suites on a Windows runner in CI

Linux CI cannot catch platform assumptions such as the '/'-only path check in
AssemblyFinder (#1143). The new `windows` job runs the same test targets as the
Linux `build` job through build.ps1, with the committed line endings kept on
checkout. The CLI and AOT smoke tests stay Linux-only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .github/workflows/dotnet.yml | 75 ++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)

diff --git a/.github/workflows/dotnet.yml b/.github/workflows/dotnet.yml
index 57f3726b..5094f1d6 100644
--- a/.github/workflows/dotnet.yml
+++ b/.github/workflows/dotnet.yml
@@ -33,6 +33,81 @@ env:
   NUKE_TELEMETRY_OPTOUT: true
 
 jobs:
+  # The unit test suites again on Windows. Linux CI cannot catch path-separator and other
+  # platform assumptions, such as AssemblyFinder skipping runtimes/native folders only for '/'
+  # (jasperfx#1143). This runs the same suites as the Linux `build` job; the CLI and AOT smoke
+  # tests stay Linux-only.
+  windows:
+    runs-on: windows-latest
+    timeout-minutes: 40
+
+    steps:
+      # The Windows runner's git converts to CRLF on checkout. Keep the committed line endings so
+      # tests that compare generated code with committed fixtures behave as they do on Linux.
+      - name: Keep committed line endings
+        run: git config --global core.autocrlf false
+
+      - uses: actions/checkout@v7
+
+      - name: Install .NET 9.0.x
+        uses: actions/setup-dotnet@v6
+        with:
+          dotnet-version: 9.0.x
+
+      - name: Install .NET 10.0.x
+        uses: actions/setup-dotnet@v6
+        with:
+          dotnet-version: 10.0.x
+
+      - name: compile
+        run: ./build.ps1 compile
+        shell: pwsh
+
+      - name: test-core
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-core
+        shell: pwsh
+
+      - name: test-codegen
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-codegen
+        shell: pwsh
+
+      - name: test-codegen-fsharp
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-codegen-fsharp
+        shell: pwsh
+
+      - name: test-command-line
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-command-line
+        shell: pwsh
+
+      - name: test-events
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-events
+        shell: pwsh
+
+      - name: test-event-store
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-event-store
+        shell: pwsh
+
+      - name: test-source-generators
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-source-generators
+        shell: pwsh
+
+      - name: test-aspire
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-aspire
+        shell: pwsh
+
+      - name: test-microsoft-extensions-ai
+        if: ${{ success() || failure() }}
+        run: ./build.ps1 test-microsoft-extensions-ai
+        shell: pwsh
+
   build:
     runs-on: ubuntu-latest
     timeout-minutes: 20

From a62ad61bae134c0636a5b7020121a2ce2c58912e Mon Sep 17 00:00:00 2001
From: "Jeremy D. Miller" <jeremydmiller@yahoo.com>
Date: Sun, 8 Nov 2026 11:11:10 -0600
Subject: [PATCH 2/2] Point the content-root override test at a folder that
 exists on Windows

override_the_content_root used "/bin", which exists on Linux and macOS but
resolves to a missing D:\bin\ on the Windows runner, where the host's
PhysicalFileProvider throws DirectoryNotFoundException. Use a fresh temp
directory instead. This was the only failure in the first Windows CI run.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .../run_command_compliance.cs                 | 25 +++++++++++++------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/src/CommandLineTests/run_command_compliance.cs b/src/CommandLineTests/run_command_compliance.cs
index 13b57451..d6b1c5f7 100644
--- a/src/CommandLineTests/run_command_compliance.cs
+++ b/src/CommandLineTests/run_command_compliance.cs
@@ -156,14 +156,25 @@ public void override_the_environment_name()
     [Fact]
     public void override_the_content_root()
     {
-        var input = new RunInput
+        // The host builds a PhysicalFileProvider over the content root, so the folder has to exist.
+        // "/bin" did on Linux and macOS, but resolves to a missing D:\bin\ on Windows.
+        var contentRoot = Directory.CreateTempSubdirectory("jasperfx-content-root-").FullName;
+
+        try
         {
-            ContentRootFlag = "/bin",
-            HostBuilder = Host.CreateDefaultBuilder()
-        };
-        
-        var host = input.BuildHost();
-        host.Services.GetRequiredService<IHostEnvironment>().ContentRootPath.ShouldBe("/bin");
+            var input = new RunInput
+            {
+                ContentRootFlag = contentRoot,
+                HostBuilder = Host.CreateDefaultBuilder()
+            };
+
+            using var host = input.BuildHost();
+            host.Services.GetRequiredService<IHostEnvironment>().ContentRootPath.ShouldBe(contentRoot);
+        }
+        finally
+        {
+            Directory.Delete(contentRoot, true);
+        }
     }
 
     [Fact]