Add CI check for whitespace

Change-Id: I7cb38bcb9b632ef73b483207f1ecc7619db653b8

.github/workflows/whitespace.yml

@@ -0,0 +1,70 @@
+name: check-whitespace
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+# Avoid unnecessary builds
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  check-whitespace:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+
+    - name: git log --check
+      id: check_out
+      run: |
+        echo "Starting the script."
+        baseSha=${{ github.event.pull_request.base.sha }}
+        problems=()
+        commit=
+        commitText=
+        commitTextmd=
+        # Use git log --check to look for whitespace errors in each commit of this PR
+        log_output=$(git log --check --pretty=format:"---% h% s" ${baseSha}..)
+        echo "${log_output}"
+        # Use a for loop to iterate over lines of log_output
+        IFS=$'\n'
+        for line in $log_output; do
+          echo "Line: ${line}"
+          case "${line}" in
+            "--- "*)
+              commit="${line#--- }"
+              commitText="${commit}"
+              commitTextmd="[${commit}](https://github.com/${{ github.repository }}/commit/${commit})"
+              ;;
+            "")
+              ;;
+            *:[1-9]*:) # contains file and line number information - This indicates that a whitespace error was found
+                  dash=${line%%:*}
+                  dashend=${line#*:}
+                  dashend=${dashend%:*}
+                  problems+=("[${line}](https://github.com/${{ github.repository }}/blob/${{github.event.pull_request.head.ref}}/${dash}#L${dashend}) ${commit}")
+                  ;;
+            *)
+              if test -n "${commit}"; then
+                problems+=("1) --- ${commitTextmd}")
+                echo ""
+                echo "--- ${commitText}"
+                commit=
+              fi
+              ;;
+          esac
+        done
+        if test ${#problems[*]} -gt 0; then
+          echo "⚠️ Please review the Summary output for further information." >> $GITHUB_STEP_SUMMARY
+          echo "### A whitespace issue was found in one or more of the commits." >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "Errors:" >> $GITHUB_STEP_SUMMARY
+          for i in "${problems[@]}"; do
+            echo "${i}" >> $GITHUB_STEP_SUMMARY
+          done
+          exit 1
+        fi
+        echo "No problems found"

Src/AssemblyInfoForUiIndependentTests.cs

@@ -11,7 +11,7 @@
 // reference System.Windows.Forms et al.
 
 // Cleanup all singletons after running tests
-[assembly: CleanupSingletons]
+[assembly: CleanupSingletons]  
 
 // Redirect HKCU if environment variable BUILDAGENT_SUBKEY is set
 [assembly: RedirectHKCU]