ci: also test with MS Visual C on Azure Pipelines

... because we can, now.

We specifically reduce the number of parallel links for MSVC, as RAM
usage is an issue with MSVC's parallel mode, manifested in the symptom:

	fatal error LNK1318: Unexpected PDB error; OK (0) ''

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

Makefile

@@ -3042,6 +3042,10 @@ rpm::
 	@false
 .PHONY: rpm
 
+ifneq ($(INCLUDE_DLLS_IN_ARTIFACTS),)
+OTHER_PROGRAMS += $(shell echo *.dll t/helper/*.dll)
+endif
+
 artifacts-tar:: $(ALL_PROGRAMS) $(SCRIPT_LIB) $(BUILT_INS) $(OTHER_PROGRAMS) \
 		GIT-BUILD-OPTIONS $(TEST_PROGRAMS) $(test_bindir_programs) \
 		$(MOFILES)

azure-pipelines.yml

@@ -130,6 +130,147 @@ jobs:
       PathtoPublish: t/failed-test-artifacts
       ArtifactName: failed-test-artifacts
 
+- job: msvc_build
+  displayName: Windows (MSVC) Build
+  condition: succeeded()
+  pool: Hosted VS2017
+  timeoutInMinutes: 240
+  steps:
+  - powershell: |
+      if ("$GITFILESHAREPWD" -ne "" -and "$GITFILESHAREPWD" -ne "`$`(gitfileshare.pwd)") {
+        net use s: \\gitfileshare.file.core.windows.net\test-cache "$GITFILESHAREPWD" /user:AZURE\gitfileshare /persistent:no
+        cmd /c mklink /d "$(Build.SourcesDirectory)\test-cache" S:\
+      }
+    displayName: 'Mount test-cache'
+    env:
+      GITFILESHAREPWD: $(gitfileshare.pwd)
+  - powershell: |
+      $urlbase = "https://dev.azure.com/git/git/_apis/build/builds"
+      $id = ((Invoke-WebRequest -UseBasicParsing "${urlbase}?definitions=9&statusFilter=completed&resultFilter=succeeded&`$top=1").content | ConvertFrom-JSON).value[0].id
+      $downloadUrl = ((Invoke-WebRequest -UseBasicParsing "${urlbase}/$id/artifacts").content | ConvertFrom-JSON).value[0].resource.downloadUrl
+      (New-Object Net.WebClient).DownloadFile($downloadUrl, "compat.zip")
+      Expand-Archive compat.zip -DestinationPath . -Force
+      Remove-Item compat.zip
+    displayName: 'Download vcpkg artifacts'
+  - powershell: |
+      $urlbase = "https://dev.azure.com/git-for-windows/git/_apis/build/builds"
+      $id = ((Invoke-WebRequest -UseBasicParsing "${urlbase}?definitions=22&statusFilter=completed&resultFilter=succeeded&`$top=1").content | ConvertFrom-JSON).value[0].id
+      $downloadUrl = ((Invoke-WebRequest -UseBasicParsing "${urlbase}/$id/artifacts").content | ConvertFrom-JSON).value[1].resource.downloadUrl
+      (New-Object Net.WebClient).DownloadFile($downloadUrl, "git-sdk-64-minimal.zip")
+      Expand-Archive git-sdk-64-minimal.zip -DestinationPath . -Force
+      Remove-Item git-sdk-64-minimal.zip
+
+      # Let Git ignore the SDK and the test-cache
+      "/git-sdk-64-minimal/`n/test-cache/`n" | Out-File -NoNewLine -Encoding ascii -Append "$(Build.SourcesDirectory)\.git\info\exclude"
+    displayName: 'Download git-sdk-64-minimal'
+  - powershell: |
+      & compat\vcbuild\vcpkg_copy_dlls.bat release
+      if (!$?) { exit(1) }
+      & git-sdk-64-minimal\usr\bin\bash.exe -lc @"
+        INCLUDE_DLLS_IN_ARTIFACTS=YesPlease \
+        ci/make-test-artifacts.sh artifacts
+      "@
+      if (!$?) { exit(1) }
+    displayName: Build
+    env:
+      HOME: $(Build.SourcesDirectory)
+      MSYSTEM: MINGW64
+      DEVELOPER: 1
+      NO_PERL: 1
+      MSVC: 1
+      VCPKG_ROOT: $(Build.SourcesDirectory)\compat\vcbuild\vcpkg
+  - task: PublishPipelineArtifact@0
+    displayName: 'Publish Pipeline Artifact: MSVC test artifacts'
+    inputs:
+      artifactName: 'msvc-artifacts'
+      targetPath: '$(Build.SourcesDirectory)\artifacts'
+  - task: PublishPipelineArtifact@0
+    displayName: 'Publish Pipeline Artifact: git-sdk-64-min-msvc'
+    inputs:
+      artifactName: 'git-sdk-64-min-msvc'
+      targetPath: '$(Build.SourcesDirectory)\git-sdk-64-minimal'
+  - powershell: |
+      if ("$GITFILESHAREPWD" -ne "" -and "$GITFILESHAREPWD" -ne "`$`(gitfileshare.pwd)") {
+        cmd /c rmdir "$(Build.SourcesDirectory)\test-cache"
+      }
+    displayName: 'Unmount test-cache'
+    condition: true
+    env:
+      GITFILESHAREPWD: $(gitfileshare.pwd)
+
+- job: msvc_test
+  displayName: Windows (MSVC) Test
+  dependsOn: msvc_build
+  condition: succeeded()
+  pool: Hosted
+  timeoutInMinutes: 240
+  strategy:
+    parallel: 10
+  steps:
+  - powershell: |
+      if ("$GITFILESHAREPWD" -ne "" -and "$GITFILESHAREPWD" -ne "`$`(gitfileshare.pwd)") {
+        net use s: \\gitfileshare.file.core.windows.net\test-cache "$GITFILESHAREPWD" /user:AZURE\gitfileshare /persistent:no
+        cmd /c mklink /d "$(Build.SourcesDirectory)\test-cache" S:\
+      }
+    displayName: 'Mount test-cache'
+    env:
+      GITFILESHAREPWD: $(gitfileshare.pwd)
+  - task: DownloadPipelineArtifact@0
+    displayName: 'Download Pipeline Artifact: MSVC test artifacts'
+    inputs:
+      artifactName: 'msvc-artifacts'
+      targetPath: '$(Build.SourcesDirectory)'
+  - task: DownloadPipelineArtifact@0
+    displayName: 'Download Pipeline Artifact: git-sdk-64-min-msvc'
+    inputs:
+      artifactName: 'git-sdk-64-min-msvc'
+      targetPath: '$(Build.SourcesDirectory)\git-sdk-64-minimal'
+  - powershell: |
+      & git-sdk-64-minimal\usr\bin\bash.exe -lc @"
+        test -f artifacts.tar.gz || {
+          echo No test artifacts found\; skipping >&2
+          exit 0
+        }
+        tar xf artifacts.tar.gz || exit 1
+
+        # Let Git ignore the SDK and the test-cache
+        printf '%s\n' /git-sdk-64-minimal/ /test-cache/ >>.git/info/exclude
+
+        ci/run-test-slice.sh `$SYSTEM_JOBPOSITIONINPHASE `$SYSTEM_TOTALJOBSINPHASE || {
+          ci/print-test-failures.sh
+          exit 1
+        }
+      "@
+      if (!$?) { exit(1) }
+    displayName: 'Test (parallel)'
+    env:
+      HOME: $(Build.SourcesDirectory)
+      MSYSTEM: MINGW64
+      NO_SVN_TESTS: 1
+      GIT_TEST_SKIP_REBASE_P: 1
+  - powershell: |
+      if ("$GITFILESHAREPWD" -ne "" -and "$GITFILESHAREPWD" -ne "`$`(gitfileshare.pwd)") {
+        cmd /c rmdir "$(Build.SourcesDirectory)\test-cache"
+      }
+    displayName: 'Unmount test-cache'
+    condition: true
+    env:
+      GITFILESHAREPWD: $(gitfileshare.pwd)
+  - task: PublishTestResults@2
+    displayName: 'Publish Test Results **/TEST-*.xml'
+    inputs:
+      mergeTestResults: true
+      testRunTitle: 'msvc'
+      platform: Windows
+      publishRunAttachments: false
+    condition: succeededOrFailed()
+  - task: PublishBuildArtifacts@1
+    displayName: 'Publish trash directories of failed tests'
+    condition: failed()
+    inputs:
+      PathtoPublish: t/failed-test-artifacts
+      ArtifactName: failed-msvc-test-artifacts
+
 - job: linux_clang
   displayName: linux-clang
   condition: succeeded()

ci/lib.sh

@@ -116,6 +116,13 @@ then
 	CI_OS_NAME="$(echo "$AGENT_OS" | tr A-Z a-z)"
 	test darwin != "$CI_OS_NAME" || CI_OS_NAME=osx
 	CI_REPO_SLUG="$(expr "$BUILD_REPOSITORY_URI" : '.*/\([^/]*/[^/]*\)$')"
+	jobs=10
+	if test -n "$MSVC"
+	then
+		CC=compat/vcbuild/scripts/clink.pl
+		jobname=windows-msvc
+		jobs=4
+	fi
 	CC="${CC:-gcc}"
 
 	# use a subdirectory of the cache dir (because the file share is shared
@@ -127,9 +134,9 @@ then
 	}
 
 	BREW_INSTALL_PACKAGES=gcc@8
-	export GIT_PROVE_OPTS="--timer --jobs 10 --state=failed,slow,save"
+	export GIT_PROVE_OPTS="--timer --jobs $jobs --state=failed,slow,save"
 	export GIT_TEST_OPTS="--verbose-log -x --write-junit-xml"
-	MAKEFLAGS="$MAKEFLAGS --jobs=10"
+	MAKEFLAGS="$MAKEFLAGS --jobs=$jobs"
 	test windows_nt != "$CI_OS_NAME" ||
 	GIT_TEST_OPTS="--no-chain-lint --no-bin-wrappers $GIT_TEST_OPTS"
 else