Add unit test for system verification

test/e2e_node/system/os_validator_test.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2016 The Kubernetes 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 system
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidateOS(t *testing.T) {
+	v := &OSValidator{}
+	specOS := "Linux"
+	for _, test := range []struct {
+		os  string
+		err bool
+	}{
+		{
+			os:  "Linux",
+			err: false,
+		},
+		{
+			os:  "Windows",
+			err: true,
+		},
+		{
+			os:  "Darwin",
+			err: true,
+		},
+	} {
+		err := v.validateOS(test.os, specOS)
+		if !test.err {
+			assert.Nil(t, err, "Expect error not to occur with os %q", test.os)
+		} else {
+			assert.NotNil(t, err, "Expect error to occur with os %q", test.os)
+		}
+	}
+}