test(backend): use go test in backend presubmit test (#4417)

* enable pagination when expanding experiment in both the home page and the archive page

* Revert "enable pagination when expanding experiment in both the home page and the archive page"

This reverts commit 5b67273.

* checkpoint

* go test to replace bazel test

* go command

* test current directory when go test is run

* remove accidentally committed file

* adjust relative path according to pwd

* go test seems missing dependency pkgs

* need go version that supports mod

* try download .tar.gz to install go version 1.13.*

* adjust the path according to the extracted package

* put go src and kubeflow/pipelines under the same go/src seems to give me a vendor inconsisten error. so separate them.

* use non-relative path; non-verbose for wget and tar

go.mod

@@ -57,7 +57,7 @@ require (
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
 	github.com/peterhellberg/duration v0.0.0-20191119133758-ec6baeebcd10
 	github.com/pkg/errors v0.8.0
-	github.com/prometheus/client_golang v0.9.2 // indirect
+	github.com/prometheus/client_golang v0.9.2
 	github.com/robfig/cron v0.0.0-20180505203441-b41be1df6967
 	github.com/sirupsen/logrus v1.0.6
 	github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d // indirect

test/presubmit-backend-test.sh

@@ -14,14 +14,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-# usage: `./hack/run_unit_tests_backend.sh` to run backend unit tests once
-#        `WATCH=true ./hack/run_unit_tests_backend.sh` to watch code changes and auto rerun tests
-# Note: ibazel can be downloaded from https://github.com/bazelbuild/bazel-watcher
-
-COMMAND="bazel"
-if [ -n "$WATCH" ]; then
-  COMMAND="ibazel"
-fi
-$COMMAND --host_jvm_args=-Xmx500m --host_jvm_args=-Xms500m test \
-  --noshow_progress --noshow_loading_progress --define=grpc_no_ares=true \
-  --test_output=all //backend/...
+# The current directory is /home/prow/go/src/github.com/kubeflow/pipelines
+# 1. install go in /home/prow/go1.13.3
+cd /home/prow
+mkdir go1.13.3
+cd go1.13.3
+wget --quiet https://dl.google.com/go/go1.13.3.linux-amd64.tar.gz
+tar -xf go1.13.3.linux-amd64.tar.gz
+# 2. run test in project directory
+cd /home/prow/go/src/github.com/kubeflow/pipelines
+/home/prow/go1.13.3/go/bin/go mod vendor
+/home/prow/go1.13.3/go/bin/go test -v -cover ./backend/...