feat(run-dotnet-tests)!: provision .NET 11 and retire the end-of-life .NET 9 SDK

.github/fixtures/run-dotnet-tests-mtp/tests/Example.Tests/Example.Tests.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net10.0</TargetFramework>
+    <TargetFramework>net11.0</TargetFramework>
     <OutputType>Exe</OutputType>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>

.github/tests/test-dotnet-native-fixtures.sh

@@ -71,9 +71,9 @@ check_sdks() {
     ($probe|length)==1 and ($probe[0]|mandatory) and $probe[0].shell=="bash" and
     ($probe[0].env.SDK_VERSIONS|tostring|split("\n")|map(select(length>0)))==$versions and ($mapping[0]|mandatory) and ($blocks[0]|mandatory) and
     ($versions|length)==2 and
-    ($versions[0]|test("^9[.]0[.][0-9]+$")) and
-    ($versions[1]|test("^10[.]0[.][0-9]+$")) and
-    ($mapping[0]|versions)==[$versions[1]] and
+    ($versions[0]|test("^10[.]0[.][0-9]+$")) and
+    ($versions[1]|test("^11[.]0[.][0-9]+$")) and
+    ($mapping[0]|versions)==[$versions[0]] and
     ($blocks[0]|versions)==$versions
   ' "$1" >/dev/null
 }
@@ -84,12 +84,12 @@ check_sdks "$work/ci.json" "$work/sdk.json" || {
 }
 sdk_controls=0
 for mutation in \
-  '.runs.steps[1].with["dotnet-version"]="9\n10"' \
-  '.runs.steps[1].with["dotnet-version"]="9.0.x\n10.0.x"' \
-  '.runs.steps[1].with["dotnet-version"]="9.0.319"' \
+  '.runs.steps[1].with["dotnet-version"]="10\n11"' \
+  '.runs.steps[1].with["dotnet-version"]="10.0.x\n11.0.x"' \
+  '.runs.steps[1].with["dotnet-version"]="11.0.100"' \
   '.runs.steps[1].with["dotnet-version"]="10.0.402"' \
-  '.runs.steps[1].with["dotnet-version"]="9.0.319\n10.0.402-preview.1"' \
-  '.runs.steps[0].env.SDK_VERSIONS="9.0.319"' \
+  '.runs.steps[1].with["dotnet-version"]="10.0.402\n11.0.100-preview.1"' \
+  '.runs.steps[0].env.SDK_VERSIONS="10.0.402"' \
   '.runs.steps[0].if="false"' \
   'del(.runs.steps[0])' \
   '.runs.steps[1].if="false"' \
@@ -107,9 +107,9 @@ done
 for mutation in \
   '.jobs["test-run-dotnet-tests-preserves-source-mapping"].steps |= map(if (.uses // "" | startswith("actions/setup-dotnet@")) then .with["dotnet-version"]="10" else . end)' \
   '.jobs["test-run-dotnet-tests-blocks"].steps |= map(select((.uses // "" | startswith("actions/setup-dotnet@")) | not))' \
-  '.jobs["test-run-dotnet-tests-blocks"].steps |= map(if (.uses // "" | startswith("actions/setup-dotnet@")) then .with["dotnet-version"]="9.0.318\n10.0.402" else . end)' \
+  '.jobs["test-run-dotnet-tests-blocks"].steps |= map(if (.uses // "" | startswith("actions/setup-dotnet@")) then .with["dotnet-version"]="10.0.401\n11.0.100" else . end)' \
   '.jobs["test-run-dotnet-tests-preserves-source-mapping"].steps += [{uses:"actions/setup-dotnet@v4",with:{"dotnet-version":"10.0.402"}}]' \
-  '.jobs["test-run-dotnet-tests-blocks"].steps += [{uses:"actions/setup-dotnet@v4",with:{"dotnet-version":"9.0.319\n10.0.402"}}]'; do
+  '.jobs["test-run-dotnet-tests-blocks"].steps += [{uses:"actions/setup-dotnet@v4",with:{"dotnet-version":"10.0.402\n11.0.100"}}]'; do
   jq "$mutation" "$work/ci.json" >"$work/broken-sdk-ci.json"
   if check_sdks "$work/broken-sdk-ci.json" "$work/sdk.json"; then
     echo 'FAIL: accepted missing, floating or mismatched fixture SDKs' >&2

.github/version-pins.json

@@ -65,15 +65,15 @@
       "files": [
         "actions/run-dotnet-tests/action.yaml"
       ],
-      "refresh": "The .NET SDKs: previous STS and current LTS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
+      "refresh": "The .NET SDKs: current LTS and current STS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
     },
     {
       "kind": "tool",
-      "pin": "SDK_VERSIONS: 9.0.319",
+      "pin": "SDK_VERSIONS: 11.0.100",
       "files": [
         "actions/run-dotnet-tests/action.yaml"
       ],
-      "refresh": "The .NET SDKs: previous STS and current LTS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
+      "refresh": "The .NET SDKs: current LTS and current STS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
     },
     {
       "kind": "tool",
@@ -82,16 +82,16 @@
         ".github/workflows/ci.yaml",
         "actions/run-dotnet-tests/action.yaml"
       ],
-      "refresh": "The .NET SDKs: previous STS and current LTS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
+      "refresh": "The .NET SDKs: current LTS and current STS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
     },
     {
       "kind": "tool",
-      "pin": "dotnet-version: 9.0.319",
+      "pin": "dotnet-version: 11.0.100",
       "files": [
         ".github/workflows/ci.yaml",
         "actions/run-dotnet-tests/action.yaml"
       ],
-      "refresh": "The .NET SDKs: previous STS and current LTS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
+      "refresh": "The .NET SDKs: current LTS and current STS, exact published versions. Move actions/run-dotnet-tests and the native fixture steps in ci.yaml together."
     },
     {
       "kind": "tool",

.github/workflows/ci.yaml

@@ -1943,10 +1943,10 @@ jobs:
       - name: ⚙️ Setup .NET
         uses: actions/setup-dotnet@0f4a354dd5547a28c70b7853dbd95d5b67886e73 # v6.1.0
         with:
-          # Match actions/run-dotnet-tests/action.yaml's SDK provisioning (previous STS + current LTS).
+          # Match actions/run-dotnet-tests/action.yaml's SDK provisioning (current LTS + current STS).
           dotnet-version: |
-            9.0.319
             10.0.402
+            11.0.100
 
       # Mirror actions/run-dotnet-tests/action.yaml's test step (`dotnet test …`) against a fixture
       # whose only test fails on purpose, so the run exits non-zero — exactly the gate's

actions/run-dotnet-tests/README.md

@@ -1,6 +1,6 @@
 # Run Dotnet Tests
 
-Test .NET solutions or projects across multiple platforms with code coverage reporting. Sets up the .NET 9 (STS) and .NET 10 (LTS) SDKs side-by-side, optionally restores private packages from GitHub Packages without persisting credentials, runs tests with coverage collection, and uploads the report to **GitHub Code Quality** (native PR coverage) on authenticated runs.
+Test .NET solutions or projects across multiple platforms with code coverage reporting. Sets up the .NET 10 (LTS) and .NET 11 (STS) SDKs side-by-side, optionally restores private packages from GitHub Packages without persisting credentials, runs tests with coverage collection, and uploads the report to **GitHub Code Quality** (native PR coverage) on authenticated runs.
 
 > **Permissions:** the calling job must grant `code-quality: write` for the GitHub Code Quality upload. The coverage is merged into a single Cobertura report (via ReportGenerator) and uploaded once, from the Linux matrix leg only. The upload is best-effort (it never fails the build), requires the repo's **Code Quality** to be enabled (_Settings → Code quality_), and is skipped when `github-token` is empty.
 
@@ -36,7 +36,7 @@ steps:
 The action picks the test command from the runner your project uses:
 
 - **VSTest (the default):** runs `dotnet test` with the Coverlet collector (`--collect:"XPlat Code Coverage"`).
-- **Microsoft.Testing.Platform:** used when the nearest `global.json` sets `"test": { "runner": "Microsoft.Testing.Platform" }`. This is the runner xUnit v3 4.x needs on the .NET 10 SDK.
+- **Microsoft.Testing.Platform:** used when the nearest `global.json` sets `"test": { "runner": "Microsoft.Testing.Platform" }`. This is the runner xUnit v3 4.x needs on the .NET 10 SDK and later.
   - If a project references `Microsoft.Testing.Extensions.CodeCoverage`, coverage is collected in Cobertura format with `--coverage`.
   - Otherwise tests still run, and a notice explains that coverage was skipped.
 

actions/run-dotnet-tests/action.yaml

@@ -19,8 +19,8 @@ runs:
       env:
         # Keep this list aligned with Setup .NET and the native fixture callsites.
         SDK_VERSIONS: |
-          9.0.319
           10.0.402
+          11.0.100
       run: |
         set -euo pipefail
         count=0
@@ -45,12 +45,12 @@ runs:
       if: steps.sdk-check.outputs.install-needed != 'false'
       uses: actions/setup-dotnet@0f4a354dd5547a28c70b7853dbd95d5b67886e73 # v6.1.0
       with:
-        # Provision both the previous STS (9) and the current LTS (10) so callers can
+        # Provision both the current LTS (10) and the current STS (11) so callers can
         # target either TFM. Exact published SDKs avoid premature channel redirects.
         # Refresh these pins together with the two native fixture setup steps.
         dotnet-version: |
-          9.0.319
           10.0.402
+          11.0.100
     - name: 🚚 Restore packages with GitHub Packages
       if: inputs.github-token != ''
       run: |