From 2b57a10db419186b7f8155ca64be1a0a4916788f Mon Sep 17 00:00:00 2001
From: Muxi Yan <mxyan@google.com>
Date: Mon, 11 Dec 2017 11:19:08 -0800
Subject: [PATCH] pre-boot xcode sim in objc-tests

---
 src/objective-c/tests/run_tests.sh | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/objective-c/tests/run_tests.sh b/src/objective-c/tests/run_tests.sh
index 62c4e10b993..a9a97aad2cc 100755
--- a/src/objective-c/tests/run_tests.sh
+++ b/src/objective-c/tests/run_tests.sh
@@ -34,6 +34,18 @@ $BINDIR/interop_server --port=5051 --max_send_message_size=8388608 --use_tls &
 # Kill them when this script exits.
 trap 'kill -9 `jobs -p` ; echo "EXIT TIME:  $(date)"' EXIT
 
+# Boot Xcode first with several retries since Xcode might fail due to a bug:
+# http://www.openradar.me/29785686
+xcrun simctl list | egrep 'iPhone 6 \('
+udid=`xcrun simctl list | egrep 'iPhone 6 \(.*\) \(.*\)' | sed -E 's/ *iPhone 6 \(([^\)]*)\).*/\1/g' | head -n 1`
+retries=0
+while [ $retries -lt 3 ] && ! open -a Simulator --args -CurrentDeviceUDID $udid ; do
+retries=$(($retries+1))
+done
+if [ $retries == 3 ]; then
+  exit 1
+fi
+
 # xcodebuild is very verbose. We filter its output and tell Bash to fail if any
 # element of the pipe fails.
 # TODO(jcanizales): Use xctool instead? Issue #2540.