Merge branch 'ls/travis-relays-for-windows-ci'

Define a new task in .travis.yml that triggers a test session on
Windows run elsewhere.

* ls/travis-relays-for-windows-ci:
  travis-ci: build and test Git on Windows

.travis.yml

@@ -39,6 +39,17 @@ env:
 
 matrix:
   include:
+    - env: Windows
+      os: linux
+      compiler:
+      addons:
+      before_install:
+      before_script:
+      script:
+        - >
+          test "$TRAVIS_REPO_SLUG" != "git/git" ||
+          ci/run-windows-build.sh $TRAVIS_BRANCH $(git rev-parse HEAD)
+      after_failure:
     - env: Linux32
       os: linux
       services:

ci/run-windows-build.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+#
+# Script to trigger the a Git for Windows build and test run.
+# Set the $GFW_CI_TOKEN as environment variable.
+# Pass the branch (only branches on https://github.com/git/git are
+# supported) and a commit hash.
+#
+
+test $# -ne 2 && echo "Unexpected number of parameters" && exit 1
+test -z "$GFW_CI_TOKEN" && echo "GFW_CI_TOKEN not defined" && exit
+
+BRANCH=$1
+COMMIT=$2
+
+gfwci () {
+	local CURL_ERROR_CODE HTTP_CODE
+	exec 3>&1
+	HTTP_CODE=$(curl \
+		-H "Authentication: Bearer $GFW_CI_TOKEN" \
+		--silent --retry 5 --write-out '%{HTTP_CODE}' \
+		--output >(sed "$(printf '1s/^\xef\xbb\xbf//')" >cat >&3) \
+		"https://git-for-windows-ci.azurewebsites.net/api/TestNow?$1" \
+	)
+	CURL_ERROR_CODE=$?
+	if test $CURL_ERROR_CODE -ne 0
+	then
+		return $CURL_ERROR_CODE
+	fi
+	if test "$HTTP_CODE" -ge 400 && test "$HTTP_CODE" -lt 600
+	then
+		return 127
+	fi
+}
+
+# Trigger build job
+BUILD_ID=$(gfwci "action=trigger&branch=$BRANCH&commit=$COMMIT&skipTests=false")
+if test $? -ne 0
+then
+	echo "Unable to trigger Visual Studio Team Services Build"
+	echo "$BUILD_ID"
+	exit 1
+fi
+
+# Check if the $BUILD_ID contains a number
+case $BUILD_ID in
+''|*[!0-9]*) echo "Unexpected build number: $BUILD_ID" && exit 1
+esac
+
+echo "Visual Studio Team Services Build #${BUILD_ID}"
+
+# Wait until build job finished
+STATUS=
+RESULT=
+while true
+do
+	LAST_STATUS=$STATUS
+	STATUS=$(gfwci "action=status&buildId=$BUILD_ID")
+	test "$STATUS" = "$LAST_STATUS" || printf "\nStatus: $STATUS "
+	printf "."
+
+	case "$STATUS" in
+	inProgress|postponed|notStarted) sleep 10               ;; # continue
+		 "completed: succeeded") RESULT="success"; break;; # success
+	*) echo "Unhandled status: $STATUS";               break;; # failure
+	esac
+done
+
+# Print log
+echo ""
+echo ""
+gfwci "action=log&buildId=$BUILD_ID" | cut -c 30-
+
+# Set exit code for TravisCI
+test "$RESULT" = "success"