diff --git a/pkg/kn/commands/route/list_flags_test.go b/pkg/kn/commands/route/list_flags_test.go
index 036c06080..d6024a14c 100644
--- a/pkg/kn/commands/route/list_flags_test.go
+++ b/pkg/kn/commands/route/list_flags_test.go
@@ -40,8 +40,8 @@ func TestRoutListFlags(t *testing.T) {
 		t.Fatalf("Failed to print the object.")
 	}
 	actualFormats := routeListFlags.AllowedFormats()
-	expectedFormats := []string{"json", "yaml", "name", "go-template", "go-template-file", "template", "templatefile", "jsonpath", "jsonpath-file"}
-	if reflect.DeepEqual(actualFormats, expectedFormats) {
+	expectedFormats := []string{"json", "yaml", "name", "go-template", "go-template-file", "template", "templatefile", "jsonpath", "jsonpath-file", "no-headers"}
+	if !reflect.DeepEqual(actualFormats, expectedFormats) {
 		t.Fatalf("Expecting allowed formats:\n%s\nFound:\n%s\n", expectedFormats, actualFormats)
 	}
 }
diff --git a/pkg/kn/commands/service/service_delete_test.go b/pkg/kn/commands/service/service_delete_test.go
new file mode 100644
index 000000000..f1137a69d
--- /dev/null
+++ b/pkg/kn/commands/service/service_delete_test.go
@@ -0,0 +1,61 @@
+// Copyright © 2019 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 service
+
+import (
+	"testing"
+
+	"gotest.tools/assert"
+	"k8s.io/apimachinery/pkg/runtime"
+	client_testing "k8s.io/client-go/testing"
+	"knative.dev/client/pkg/kn/commands"
+	"knative.dev/client/pkg/util"
+)
+
+func fakeServiceDelete(args []string) (action client_testing.Action, name string, output string, err error) {
+	knParams := &commands.KnParams{}
+	cmd, fakeServing, buf := commands.CreateTestKnCommand(NewServiceCommand(knParams), knParams)
+	fakeServing.AddReactor("delete", "services",
+		func(a client_testing.Action) (bool, runtime.Object, error) {
+			deleteAction, _ := a.(client_testing.DeleteAction)
+			action = deleteAction
+			name = deleteAction.GetName()
+			return true, nil, nil
+		})
+	cmd.SetArgs(args)
+	err = cmd.Execute()
+	if err != nil {
+		return
+	}
+	output = buf.String()
+	return
+}
+
+func TestServiceDelete(t *testing.T) {
+	sevName := "sev-12345"
+	action, name, output, err := fakeServiceDelete([]string{"service", "delete", sevName})
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	if action == nil {
+		t.Errorf("No action")
+	} else if !action.Matches("delete", "services") {
+		t.Errorf("Bad action %v", action)
+	} else if name != sevName {
+		t.Errorf("Bad service name returned after delete.")
+	}
+	assert.Check(t, util.ContainsAll(output, "Service", sevName, "deleted", "namespace", commands.FakeNamespace))
+}
diff --git a/pkg/kn/commands/service/service_list_flags_test.go b/pkg/kn/commands/service/service_list_flags_test.go
new file mode 100644
index 000000000..98f667e9b
--- /dev/null
+++ b/pkg/kn/commands/service/service_list_flags_test.go
@@ -0,0 +1,45 @@
+// Copyright © 2019 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 im
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package service
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/spf13/cobra"
+	"gotest.tools/assert"
+)
+
+func TestServiceListFlags(t *testing.T) {
+	var cmd *cobra.Command
+
+	t.Run("adds service list flag", func(t *testing.T) {
+		serviceListFlags := NewServiceListFlags()
+
+		cmd = &cobra.Command{}
+		serviceListFlags.AddFlags(cmd)
+
+		assert.Assert(t, serviceListFlags != nil)
+		assert.Assert(t, cmd.Flags() != nil)
+
+		allowMissingTemplateKeys, err := cmd.Flags().GetBool("allow-missing-template-keys")
+		assert.NilError(t, err)
+		assert.Assert(t, allowMissingTemplateKeys == true)
+
+		actualFormats := serviceListFlags.AllowedFormats()
+		expectedFormats := []string{"json", "yaml", "name", "go-template", "go-template-file", "template", "templatefile", "jsonpath", "jsonpath-file", "no-headers"}
+		assert.Assert(t, reflect.DeepEqual(actualFormats, expectedFormats))
+	})
+}