tests: run coverage tests in Semaphore

Signed-off-by: Gyuho Lee <gyuhox@gmail.com>

tests/semaphore.test.bash

@@ -5,6 +5,20 @@ if ! [[ "$0" =~ "tests/semaphore.test.bash" ]]; then
   exit 255
 fi
 
+<<COMMENT
+# amd64-e2e
+bash tests/semaphore.test.bash
+
+# 386-e2e
+TEST_ARCH=386 bash tests/semaphore.test.bash
+
+# grpc-proxy
+TEST_OPTS="PASSES='build grpcproxy'" bash tests/semaphore.test.bash
+
+# coverage
+TEST_OPTS="coverage" bash tests/semaphore.test.bash
+COMMENT
+
 TEST_SUFFIX=$(date +%s | base64 | head -c 15)
 
 if [ -z "${TEST_OPTS}" ]; then
@@ -15,11 +29,14 @@ if [ "${TEST_ARCH}" == "386" ]; then
 fi
 
 echo "Running tests with" ${TEST_OPTS}
+if [ "${TEST_OPTS}" == "coverage" ]; then
+  make docker-test-coverage
+else
+  docker run \
+    --rm \
+    --volume=`pwd`:/go/src/github.com/coreos/etcd \
+    gcr.io/etcd-development/etcd-test:go1.10.3 \
+    /bin/bash -c "${TEST_OPTS} ./test 2>&1 | tee test-${TEST_SUFFIX}.log"
 
-docker run \
-  --rm \
-  --volume=`pwd`:/go/src/github.com/coreos/etcd \
-  gcr.io/etcd-development/etcd-test:go1.10.3 \
-  /bin/bash -c "${TEST_OPTS} ./test 2>&1 | tee test-${TEST_SUFFIX}.log"
-
-! egrep "(--- FAIL:|DATA RACE|panic: test timed out|appears to have leaked)" -B50 -A10 test-${TEST_SUFFIX}.log
+  ! egrep "(--- FAIL:|DATA RACE|panic: test timed out|appears to have leaked)" -B50 -A10 test-${TEST_SUFFIX}.log
+fi