Windows,tests: port bazel_testjobs_test

//src/test/shell/integration:bazel_testjobs_test
now runs on Windows.

See https://github.com/bazelbuild/bazel/issues/4292

Change-Id: Ia12a01f27ee8bd5a00aead546bcaf483fc4d72a3

Closes #5835.

Change-Id: I6e9af9da9221a4d4d553e8ad066b607a54c5c907
PiperOrigin-RevId: 208034351

2 files changed, 50 insertions, 12 deletions

diff --git a/src/test/shell/integration/BUILD b/src/test/shell/integration/BUILD
index b6657b8b89..d31cd32635 100644
--- a/src/test/shell/integration/BUILD
+++ b/src/test/shell/integration/BUILD
@@ -156,9 +156,11 @@ sh_test(
 sh_test(
     name = "bazel_testjobs_test",
     srcs = ["bazel_testjobs_test.sh"],
-    data = [":test-deps"],
-    shard_count = 3,
-    tags = ["no_windows"],
+    data = [
+        ":test-deps",
+        "@bazel_tools//tools/bash/runfiles",
+    ],
+    shard_count = 2,
 )
 
 sh_test(
diff --git a/src/test/shell/integration/bazel_testjobs_test.sh b/src/test/shell/integration/bazel_testjobs_test.sh
index 2c6f99cd0f..59848c7f02 100755
--- a/src/test/shell/integration/bazel_testjobs_test.sh
+++ b/src/test/shell/integration/bazel_testjobs_test.sh
@@ -14,11 +14,46 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# Load the test setup defined in the parent directory
-CURRENT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-source "${CURRENT_DIR}/../integration_test_setup.sh" \
+# --- begin runfiles.bash initialization ---
+# Copy-pasted from Bazel's Bash runfiles library (tools/bash/runfiles/runfiles.bash).
+set -euo pipefail
+if [[ ! -d "${RUNFILES_DIR:-/dev/null}" && ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
+  if [[ -f "$0.runfiles_manifest" ]]; then
+    export RUNFILES_MANIFEST_FILE="$0.runfiles_manifest"
+  elif [[ -f "$0.runfiles/MANIFEST" ]]; then
+    export RUNFILES_MANIFEST_FILE="$0.runfiles/MANIFEST"
+  elif [[ -f "$0.runfiles/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
+    export RUNFILES_DIR="$0.runfiles"
+  fi
+fi
+if [[ -f "${RUNFILES_DIR:-/dev/null}/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then
+  source "${RUNFILES_DIR}/bazel_tools/tools/bash/runfiles/runfiles.bash"
+elif [[ -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then
+  source "$(grep -m1 "^bazel_tools/tools/bash/runfiles/runfiles.bash " \
+            "$RUNFILES_MANIFEST_FILE" | cut -d ' ' -f 2-)"
+else
+  echo >&2 "ERROR: cannot find @bazel_tools//tools/bash/runfiles:runfiles.bash"
+  exit 1
+fi
+# --- end runfiles.bash initialization ---
+
+source "$(rlocation "io_bazel/src/test/shell/integration_test_setup.sh")" \
   || { echo "integration_test_setup.sh not found!" >&2; exit 1; }
 
+case "$(uname -s | tr [:upper:] [:lower:])" in
+msys*|mingw*|cygwin*)
+  declare -r is_windows=true
+  ;;
+*)
+  declare -r is_windows=false
+  ;;
+esac
+
+if "$is_windows"; then
+  export MSYS_NO_PATHCONV=1
+  export MSYS2_ARG_CONV_EXCL="*"
+fi
+
 add_to_bazelrc "test --nocache_test_results"
 
 # End of preamble.
@@ -26,23 +61,25 @@ add_to_bazelrc "test --nocache_test_results"
 function create_test_files() {
   # We use this directory as a communication mechanism between test runs. Each
   # test adds a unique file to the directory and then removes it.
-  mkdir -p $TEST_TMPDIR/testfiles
+  local -r testfiles="$(mktemp -d "$TEST_TMPDIR/tmp.XXXXXXXX")"
 
-  mkdir dir
+  if [[ ! -d dir ]]; then
+    mkdir dir
+  fi
 
   cat <<EOF > dir/test.sh
 #!/bin/sh
 
-z=\$(mktemp $TEST_TMPDIR/testfiles/tmp.XXXXXXXX)
+z=\$(mktemp "$testfiles/tmp.XXXXXXXX")
 
 # Try to ensure other test runs have started too.
 sleep 1
 
-numtestfiles=\$(ls -1 $TEST_TMPDIR/testfiles/ | wc -l)
+numtestfiles=\$(ls -1 "$testfiles/" | wc -l)
 
 # The tests below are configured to prevent more than 3 tests from running at
 # once. This block returns an error code from this script if it observes more
-# than 3 files in the testfiles/ directory.
+# than 3 files in the \$testfiles/ directory.
 if [[ "\${numtestfiles}" -gt 3 ]] ; then
   echo "Found \${numtestfiles} test files, but there should be 3 at max."
   exit 1
@@ -53,7 +90,6 @@ fi
 sleep 1
 
 rm \${z}
-
 EOF
 
   chmod +x dir/test.sh