env/windows: touch up test_buildlet.bash to remove stale tests

Revamp rules for testing windows VMs (there were references to old
versions of Go that no longer exist on in the GCS bucket).

Change-Id: I86c692f4187979857d4e86ef0606c6fc9b4889cf
Reviewed-on: https://go-review.googlesource.com/c/build/+/410240
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

env/windows/test_buildlet.bash

@@ -4,25 +4,47 @@
 # Use of this source code is governed by a BSD-style
 # license that can be found in the LICENSE file.
 
+# Prerequisites for using this script
+
 set -ue
 
 hostname="$1"
 BUILDLET="windows-amd64-2012@${hostname}"
 
-echo "Pushing go1.4, go1.9beta2 to buildlet"
-gomote puttar -url https://storage.googleapis.com/golang/go1.9beta2.src.tar.gz "$BUILDLET"
+echo "Pushing go1.4 to buildlet"
 gomote put14 "$BUILDLET"
 
+echo "Pushing go tip to buildlet"
+(
+  TEMPDIR=`mktemp -d `
+  cd $TEMPDIR
+  git clone //go.googlesource.com/go
+  tar zcf - ./go > go.tar.gz
+  gomote puttar "$BUILDLET" go.tar.gz
+  rm -rf go go.tar.gz
+)
+
 echo "Building go (32-bit)"
 gomote run -e GOARCH=386 -e GOHOSTARCH=386 -path 'C:/godep/gcc32/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=c:\workdir\go' "$BUILDLET" go/src/make.bat
 
-# Go1.8 has failing tests on some windows versions.
-# Push a new release when avaliable or update this to use master.
-echo "Running tests for go (32-bit)"
-#gomote run -e GOARCH=386 -e GOHOSTARCH=386 -path 'C:/godep/gcc32/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=C:\workdir\go' "$BUILDLET" go/bin/go.exe tool dist test -v --no-rebuild
-
 echo "Building go (64-bit)"
 gomote run -path '$PATH,C:/godep/gcc64/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=c:\workdir\go' "$BUILDLET" go/src/make.bat
 
+# Note: full tests commented out for now. Comment out this early exit to
+# re-enable tests when qualifying new VMs.
+exit 0
+
+# Keep going on error.
+set +e
+
+echo "Rebuilding go (32-bit)"
+gomote run -e GOARCH=386 -e GOHOSTARCH=386 -path 'C:/godep/gcc32/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=c:\workdir\go' "$BUILDLET" go/src/make.bat
+
+echo "Running tests for go (32-bit)"
+gomote run -e GOARCH=386 -e GOHOSTARCH=386 -path 'C:/godep/gcc32/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=C:\workdir\go' "$BUILDLET" go/bin/go.exe tool dist test -v --no-rebuild
+
+echo "Rebuilding go (64-bit)"
+gomote run -path '$PATH,C:/godep/gcc64/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=c:\workdir\go' "$BUILDLET" go/src/make.bat
+
 echo "Running tests for go (64-bit)"
-#gomote run -path 'C:/godep/gcc64/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=C:\workdir\go' "$BUILDLET" go/bin/go.exe tool dist test -v --no-rebuild
+gomote run -path 'C:/godep/gcc64/bin,$WORKDIR/go/bin,$PATH' -e 'GOROOT=C:\workdir\go' "$BUILDLET" go/bin/go.exe tool dist test -v --no-rebuild