kubectl plugins have access config, global flags and environment

pkg/kubectl/plugins/env_test.go

@@ -0,0 +1,162 @@
+/*
+Copyright 2017 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 plugins
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/spf13/pflag"
+)
+
+func TestEnv(t *testing.T) {
+	tests := []struct {
+		env      Env
+		expected string
+	}{
+		{
+			env:      Env{"FOO", "BAR"},
+			expected: "FOO=BAR",
+		},
+		{
+			env:      Env{"FOO", "BAR="},
+			expected: "FOO=BAR=",
+		},
+		{
+			env:      Env{"FOO", ""},
+			expected: "FOO=",
+		},
+	}
+	for _, test := range tests {
+		if s := test.env.String(); s != test.expected {
+			t.Errorf("%v: expected string %q, got %q", test.env, test.expected, s)
+		}
+	}
+}
+
+func TestEnvListToSlice(t *testing.T) {
+	tests := []struct {
+		env      EnvList
+		expected []string
+	}{
+		{
+			env: EnvList{
+				{"FOO", "BAR"},
+				{"ZEE", "YO"},
+				{"ONE", "1"},
+				{"EQUALS", "=="},
+				{"EMPTY", ""},
+			},
+			expected: []string{"FOO=BAR", "ZEE=YO", "ONE=1", "EQUALS===", "EMPTY="},
+		},
+	}
+	for _, test := range tests {
+		if s := test.env.Slice(); !reflect.DeepEqual(test.expected, s) {
+			t.Errorf("%v: expected %v, got %v", test.env, test.expected, s)
+		}
+	}
+}
+
+func TestAddToEnvList(t *testing.T) {
+	tests := []struct {
+		add      []string
+		expected EnvList
+	}{
+		{
+			add: []string{"FOO=BAR", "EMPTY=", "EQUALS===", "JUSTNAME"},
+			expected: EnvList{
+				{"FOO", "BAR"},
+				{"EMPTY", ""},
+				{"EQUALS", "=="},
+				{"JUSTNAME", ""},
+			},
+		},
+	}
+	for _, test := range tests {
+		env := EnvList{}.Merge(test.add...)
+		if !reflect.DeepEqual(test.expected, env) {
+			t.Errorf("%v: expected %v, got %v", test.add, test.expected, env)
+		}
+	}
+}
+
+func TestFlagToEnv(t *testing.T) {
+	flags := pflag.NewFlagSet("", pflag.ContinueOnError)
+	flags.String("test", "ok", "")
+	flags.String("kube-master", "http://something", "")
+	flags.String("from-file", "default", "")
+	flags.Parse([]string{"--from-file=nondefault"})
+
+	tests := []struct {
+		flag     *pflag.Flag
+		prefix   string
+		expected Env
+	}{
+		{
+			flag:     flags.Lookup("test"),
+			expected: Env{"TEST", "ok"},
+		},
+		{
+			flag:     flags.Lookup("kube-master"),
+			expected: Env{"KUBE_MASTER", "http://something"},
+		},
+		{
+			prefix:   "KUBECTL_",
+			flag:     flags.Lookup("from-file"),
+			expected: Env{"KUBECTL_FROM_FILE", "nondefault"},
+		},
+	}
+	for _, test := range tests {
+		if env := FlagToEnv(test.flag, test.prefix); !reflect.DeepEqual(test.expected, env) {
+			t.Errorf("%v: expected %v, got %v", test.flag.Name, test.expected, env)
+		}
+	}
+}
+
+func TestPluginDescriptorEnvProvider(t *testing.T) {
+	tests := []struct {
+		plugin   *Plugin
+		expected EnvList
+	}{
+		{
+			plugin: &Plugin{
+				Description: Description{
+					Name:      "test",
+					ShortDesc: "Short Description",
+					Command:   "foo --bar",
+				},
+			},
+			expected: EnvList{
+				{"KUBECTL_PLUGINS_DESCRIPTOR_NAME", "test"},
+				{"KUBECTL_PLUGINS_DESCRIPTOR_SHORT_DESC", "Short Description"},
+				{"KUBECTL_PLUGINS_DESCRIPTOR_LONG_DESC", ""},
+				{"KUBECTL_PLUGINS_DESCRIPTOR_EXAMPLE", ""},
+				{"KUBECTL_PLUGINS_DESCRIPTOR_COMMAND", "foo --bar"},
+			},
+		},
+	}
+	for _, test := range tests {
+		provider := &PluginDescriptorEnvProvider{
+			Plugin: test.plugin,
+		}
+		env, _ := provider.Env()
+		if !reflect.DeepEqual(test.expected, env) {
+			t.Errorf("%v: expected %v, got %v", test.plugin.Name, test.expected, env)
+		}
+	}
+
+}