fix issue that CHANGED_FILES is empty (#17)

plugins/hello/test/e2e-tests.sh

@@ -15,5 +15,20 @@
 # ===============================================
 # Add you integration tests here
 
+source "$(dirname $0)"/../../../test-infra/scripts/e2e-tests.sh
+
 echo "TEST_INFRA_SCRIPTS: $TEST_INFRA_SCRIPTS"
-echo "Testing kn-myplugin"
+echo "Testing hello"
+
+run() {
+
+  header "Running plugin hello e2e tests for Knative Serving $KNATIVE_SERVING_VERSION and Eventing $KNATIVE_EVENTING_VERSION"
+
+  go_test_e2e -timeout=45m ./test/e2e || fail_test
+
+  success
+}
+
+# Fire up
+cd ${REPO_ROOT_DIR}
+run $@

plugins/hello/test/e2e/basic_flow_test.go

@@ -0,0 +1,22 @@
+// Copyright © 2020 The Knative Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+package e2e
+
+import (
+	"testing"
+)
+
+func TestBasicWorkflow(t *testing.T) {
+	t.Log("Running TestBasicWorkflow")
+}

test/common.sh

@@ -31,7 +31,8 @@ function loop_over_plugins() {
 }
 
 function list_plugins_changed_in_pr() {
-   echo "$CHANGED_FILES" | grep "^plugins/" | sed -e 's|plugins/\([^/]*\).*|\1|' | uniq | sort
+  CHANGED_FILES="$(list_changed_files)"
+  echo "$CHANGED_FILES" | grep "^plugins/" | sed -e 's|plugins/\([^/]*\).*|\1|' | uniq | sort
 }
 
 function fail_sub_test() {

test/e2e-tests.sh

@@ -2,6 +2,7 @@
 
 source "$(dirname $0)"/common.sh
 source "$(dirname $0)"/../test-infra/scripts/e2e-tests.sh
+source "$(dirname $0)"/../test-infra/scripts/presubmit-tests.sh
 
 run() {
   local basedir=$(basedir)