Wire the test framework in to the demo tests

We're not exercising the test framework yet, but it's in place.

Our democli expects its test assets to be in `./assets/bin`. We have a
script `./scripts/download-binaries.sh` which will populate that directory
from a google storage bucket.

Once those assets are in place, you can run tests with
`./scripts/run-tests.sh`.

.gitignore

@@ -1 +1,2 @@
 .idea
+pkg/framework/test/assets/bin

pkg/framework/test/assets/bin/.gitkeep

@@ -0,0 +1 @@
+This directory will be the home of some binaries which are downloaded with `pkg/framework/test/scripts/download-binaries`.

pkg/framework/test/ci/pipeline.yml

@@ -27,8 +27,8 @@ jobs:
           export GOPATH="${PWD}/go"
           export PATH="${PATH}:${GOPATH}/bin"
           go get github.com/onsi/ginkgo/ginkgo
-          cd "${GOPATH}/src/k8s.io/kubectl/pkg/framework/test"
-          ginkgo -r
+          "${GOPATH}/src/k8s.io/kubectl/pkg/framework/test/scripts/download-binaries.sh"
+          "${GOPATH}/src/k8s.io/kubectl/pkg/framework/test/scripts/run-tests.sh"
 - name: push-to-prod-branch
   serial: true
   plan:

pkg/framework/test/democli/integration/integration_suite_test.go

@@ -6,7 +6,12 @@ import (
 
 	"testing"
 
+	"os"
+
+	"path/filepath"
+
 	"github.com/onsi/gomega/gexec"
+	"k8s.io/kubectl/pkg/framework/test"
 )
 
 func TestIntegration(t *testing.T) {
@@ -16,14 +21,22 @@ func TestIntegration(t *testing.T) {
 
 var (
 	pathToDemoCommand string
+	fixtures          *test.Fixtures
 )
 
 var _ = BeforeSuite(func() {
 	var err error
 	pathToDemoCommand, err = gexec.Build("k8s.io/kubectl/pkg/framework/test/democli/")
 	Expect(err).NotTo(HaveOccurred())
+
+	assetsDir, ok := os.LookupEnv("KUBE_ASSETS_DIR")
+	Expect(ok).To(BeTrue(), "KUBE_ASSETS_DIR should point to a directory containing etcd and apiserver binaries")
+	fixtures = test.NewFixtures(filepath.Join(assetsDir, "etcd"), filepath.Join(assetsDir, "kube-apiserver"))
+	err = fixtures.Start()
+	Expect(err).NotTo(HaveOccurred())
 })
 
 var _ = AfterSuite(func() {
+	fixtures.Stop()
 	gexec.CleanupBuildArtifacts()
 })

pkg/framework/test/scripts/download-binaries.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -eu
+
+# Use DEBUG=1 ./scripts/download-binaries.sh to get debug output
+quiet="--quiet"
+[[ -z "${DEBUG:-""}" ]] || {
+  set -x
+  quiet=""
+}
+
+# Use BASE_URL=https://my/binaries/url ./scripts/download-binaries to download
+# from a different bucket
+: "${BASE_URL:="https://storage.googleapis.com/k8s-c10s-test-binaries"}"
+
+test_framework_dir="$(cd "$(dirname "$0")/.." ; pwd)"
+os="$(uname -s)"
+arch="$(uname -m)"
+
+echo "About to download a couple of binaries. This might take a while..."
+wget $quiet "${BASE_URL}/etcd-${os}-${arch}" -O "${test_framework_dir}/assets/bin/etcd"
+wget $quiet "${BASE_URL}/kube-apiserver-${os}-${arch}" -O "${test_framework_dir}/assets/bin/kube-apiserver"
+chmod +x "${test_framework_dir}/assets/bin/etcd"
+chmod +x "${test_framework_dir}/assets/bin/kube-apiserver"
+echo "Done!"

pkg/framework/test/scripts/run-tests.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+set -eu
+
+# Use DEBUG=1 ./scripts/run-tests.sh to get debug output
+[[ -z "${DEBUG:-""}" ]] || set -x
+
+ginkgo_args=''
+[[ -z "${GINKGO_WATCH:-""}" ]] || ginkgo_args="${ginkgo_args} watch"
+
+test_framework_dir="$(cd "$(dirname "$0")/.." ; pwd)"
+
+export KUBE_ASSETS_DIR="${test_framework_dir}/assets/bin"
+
+ginkgo $ginkgo_args -r "${test_framework_dir}"