Check the specific Windows GIX_TEST_IGNORE_ARCHIVES=1 failures

This modifies the `test-fixtures-windows` job that tests on Windows
with `GIX_TEST_IGNORE_ARCHIVES=1` so that, instead of checking that
no more than 14 failures occur, it checks that the failing tests
are exactly those that are documented in GitoxideLabs#1358 as expected to fail.

The initial check that no tests have *error* status is preserved,
with only stylistic changes, and kept separate from the subsequent
logic so that the output is clearer.

The new steps are no longer conditional on `nextest` having exited
with a failure status, since (a) that was probably unnecessary
before and definitely unnecessary now, (b) at last for now, the
comparison is precise, so it would be strange to pass if the diff
were to have changes on *all* lines, and (c) this makes it slightly
less likely that GitoxideLabs#1358 will accidentally stay open even once fixed.

The current approach is to actually retrieve the list of tests
expected to fail on Windows with `GIX_TEST_IGNORE_ARCHIVES=1` from
the GitoxideLabs#1358 issue body. This has the advantage that it automatically
keeps up to date with changes made to that issue description, but
this is of course not the only possible approach for populating the
expected value.

Two changes should be made before this is ready:

- As noted in the "FIXME" comment, the job should currently fail
  becuase the performance test reported to fail in GitoxideLabs#1358 is not
  being filtered out from the expected failures list. It's left in
  as of this commit, to verify that the job is capable of failing.

  (After that, the performance test should either be filtered out
  or removed from the list in GitoxideLabs#1358, but the former approach is
  currently preferable because I have not done diverse enough
  testing to check if the failure on my main Windows system is due
  to that system being too slow rather than a performance bug.)

- The scratchwork file should be removed once no longer needed.

.github/workflows/ci.yml

@@ -95,15 +95,41 @@ jobs:
           GIX_TEST_IGNORE_ARCHIVES: 1
         run: cargo nextest --profile=with-xml run --workspace --no-fail-fast
         continue-on-error: true
-      - name: Check how many tests failed
-        if: steps.nextest.outcome == 'failure'
-        env:
-          # See https://github.com/GitoxideLabs/gitoxide/issues/1358.
-          EXPECTED_FAILURE_COUNT: 14
+      - name: Check for errors
+        run: |
+          [xml]$junit_xml = Get-Content -Path 'target/nextest/with-xml/junit.xml'
+          if ($junit_xml.testsuites.errors -ne 0) { exit 1 }
+      - name: Collect actual failures
+        run: |
+          [xml]$junit_xml = Get-Content 'target/nextest/with-xml/junit.xml'
+
+          $actual_failures = $junit_xml.SelectNodes("//testcase[failure]") |
+              ForEach-Object { "$($_.classname) $($_.name)" } |
+              Sort-Object
+
+          Write-Output $actual_failures
+          Set-Content -Path 'actual-failures.txt' -Value $actual_failures
+      - name: Collect expected failures
+        run: |
+          $issue = 1358  # https://github.com/GitoxideLabs/gitoxide/issues/1358
+
+          $match_info = gh issue --repo GitoxideLabs/gitoxide view $issue --json body --jq .body |
+              Out-String |
+              Select-String -Pattern '(?s)```text\r?\n(.*?)```'
+
+          # FIXME: Check that the diff can fail, then filter out performance tests in Where-Object.
+          $expected_failures = $match_info.Matches.Groups[1].Value -split "`n" |
+              Where-Object { $_ -match '^\s*FAIL \[' } |
+              ForEach-Object { $_ -replace '^\s*FAIL \[\s*\d+\.\d+s\]\s*', '' -replace '\s+$', '' } |
+              Sort-Object
+
+          Write-Output $expected_failures
+          Set-Content -Path 'expected-failures.txt' -Value $expected_failures
+      - name: Compare expected and actual failures
         run: |
-          [xml]$junit = Get-Content -Path 'target/nextest/with-xml/junit.xml'
-          if ($junit.testsuites.errors -ne 0) { exit 1 }
-          if ($junit.testsuites.failures -gt $env:EXPECTED_FAILURE_COUNT) { exit 1 }
+          # Fail the check if there are any differences, even unexpectedly passing tests, so they can be
+          # investigated. (If this check is made blocking for PRs, this exact check may need to be changed.)
+          git --no-pager diff --no-index --exit-code -U1000000 -- expected-failures.txt actual-failures.txt
 
   test-32bit:
     runs-on: ubuntu-latest

scratchwork.ps1

@@ -0,0 +1,43 @@
+# Omit from all script steps, becuase GHA prepends it.
+$ErrorActionPreference = 'stop'
+
+
+Write-Output '====== Output of scratchwork for "Collect actual failures" step: ======'
+
+[xml]$junit_xml = Get-Content 'target/nextest/with-xml/junit.xml'
+
+$actual_failures = $junit_xml.SelectNodes("//testcase[failure]") |
+    ForEach-Object { "$($_.classname) $($_.name)" } |
+    Sort-Object
+
+Write-Output $actual_failures
+Set-Content -Path 'actual-failures.txt' -Value $actual_failures
+
+
+Write-Output '====== Output of scratchwork for "Collect expected failures" step: ======'
+
+$issue = 1358  # https://github.com/GitoxideLabs/gitoxide/issues/1358
+
+$match_info = gh issue --repo GitoxideLabs/gitoxide view $issue --json body --jq .body |
+    Out-String |
+    Select-String -Pattern '(?s)```text\r?\n(.*?)```'
+
+# FIXME: Check that the diff can fail, then filter out performance tests in Where-Object.
+$expected_failures = $match_info.Matches.Groups[1].Value -split "`n" |
+    Where-Object { $_ -match '^\s*FAIL \[' } |
+    ForEach-Object { $_ -replace '^\s*FAIL \[\s*\d+\.\d+s\]\s*', '' -replace '\s+$', '' } |
+    Sort-Object
+
+Write-Output $expected_failures
+Set-Content -Path 'expected-failures.txt' -Value $expected_failures
+
+
+Write-Output '====== Output of scratchwork for "Compare expected and actual failures" step: ======'
+
+# Fail the check if there are any differences, even unexpectedly passing tests, so they can be
+# investigated. (If this check is made blocking for PRs, this exact check may need to be changed.)
+git --no-pager diff --no-index --exit-code -U1000000 -- expected-failures.txt actual-failures.txt
+
+
+# Omit from script steps, because GHA appends it.
+if ((Test-Path -LiteralPath variable:\LASTEXITCODE)) { exit $LASTEXITCODE }