Add a label command.

pkg/kubectl/cmd/label_test.go

@@ -0,0 +1,249 @@
+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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 cmd
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/runtime"
+)
+
+func TestValidateLabels(t *testing.T) {
+	tests := []struct {
+		meta      *api.ObjectMeta
+		labels    map[string]string
+		expectErr bool
+		test      string
+	}{
+		{
+			meta: &api.ObjectMeta{
+				Labels: map[string]string{
+					"a": "b",
+					"c": "d",
+				},
+			},
+			labels: map[string]string{
+				"a": "c",
+				"d": "b",
+			},
+			test:      "one shared",
+			expectErr: true,
+		},
+		{
+			meta: &api.ObjectMeta{
+				Labels: map[string]string{
+					"a": "b",
+					"c": "d",
+				},
+			},
+			labels: map[string]string{
+				"b": "d",
+				"c": "a",
+			},
+			test:      "second shared",
+			expectErr: true,
+		},
+		{
+			meta: &api.ObjectMeta{
+				Labels: map[string]string{
+					"a": "b",
+					"c": "d",
+				},
+			},
+			labels: map[string]string{
+				"b": "a",
+				"d": "c",
+			},
+			test: "no overlap",
+		},
+		{
+			meta: &api.ObjectMeta{},
+			labels: map[string]string{
+				"b": "a",
+				"d": "c",
+			},
+			test: "no labels",
+		},
+	}
+	for _, test := range tests {
+		err := validateNoOverwrites(test.meta, test.labels)
+		if test.expectErr && err == nil {
+			t.Errorf("%s: unexpected non-error", test.test)
+		}
+		if !test.expectErr && err != nil {
+			t.Errorf("%s: unexpected error: %v", test.test, err)
+		}
+	}
+}
+
+func TestParseLabels(t *testing.T) {
+	tests := []struct {
+		labels         []string
+		expected       map[string]string
+		expectedRemove []string
+		expectErr      bool
+	}{
+		{
+			labels:   []string{"a=b", "c=d"},
+			expected: map[string]string{"a": "b", "c": "d"},
+		},
+		{
+			labels:   []string{},
+			expected: map[string]string{},
+		},
+		{
+			labels:         []string{"a=b", "c=d", "e-"},
+			expected:       map[string]string{"a": "b", "c": "d"},
+			expectedRemove: []string{"e"},
+		},
+		{
+			labels:    []string{"ab", "c=d"},
+			expectErr: true,
+		},
+		{
+			labels:    []string{"a=b", "c=d", "a-"},
+			expectErr: true,
+		},
+	}
+	for _, test := range tests {
+		labels, remove, err := parseLabels(test.labels)
+		if test.expectErr && err == nil {
+			t.Errorf("unexpected non-error: %v", test)
+		}
+		if !test.expectErr && err != nil {
+			t.Errorf("unexpected error: %v %v", err, test)
+		}
+		if !reflect.DeepEqual(labels, test.expected) {
+			t.Errorf("expected: %v, got %v", test.expected, labels)
+		}
+		if !reflect.DeepEqual(remove, test.expectedRemove) {
+			t.Errorf("expected: %v, got %v", test.expectedRemove, remove)
+		}
+	}
+}
+
+func TestLabelFunc(t *testing.T) {
+	tests := []struct {
+		obj       runtime.Object
+		overwrite bool
+		version   string
+		labels    map[string]string
+		remove    []string
+		expected  runtime.Object
+		expectErr bool
+	}{
+		{
+			obj: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "b"},
+				},
+			},
+			labels:    map[string]string{"a": "b"},
+			expectErr: true,
+		},
+		{
+			obj: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "b"},
+				},
+			},
+			labels:    map[string]string{"a": "c"},
+			overwrite: true,
+			expected: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "c"},
+				},
+			},
+		},
+		{
+			obj: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "b"},
+				},
+			},
+			labels: map[string]string{"c": "d"},
+			expected: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "b", "c": "d"},
+				},
+			},
+		},
+		{
+			obj: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "b"},
+				},
+			},
+			labels:  map[string]string{"c": "d"},
+			version: "2",
+			expected: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels:          map[string]string{"a": "b", "c": "d"},
+					ResourceVersion: "2",
+				},
+			},
+		},
+		{
+			obj: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "b"},
+				},
+			},
+			labels: map[string]string{},
+			remove: []string{"a"},
+			expected: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{},
+				},
+			},
+		},
+		{
+			obj: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{"a": "b", "c": "d"},
+				},
+			},
+			labels: map[string]string{"e": "f"},
+			remove: []string{"a"},
+			expected: &api.Pod{
+				ObjectMeta: api.ObjectMeta{
+					Labels: map[string]string{
+						"c": "d",
+						"e": "f",
+					},
+				},
+			},
+		},
+	}
+	for _, test := range tests {
+		out, err := labelFunc(test.obj, test.overwrite, test.version, test.labels, test.remove)
+		if test.expectErr {
+			if err == nil {
+				t.Errorf("unexpected non-error: %v", test)
+			}
+			continue
+		}
+		if !test.expectErr && err != nil {
+			t.Errorf("unexpected error: %v %v", err, test)
+		}
+		if !reflect.DeepEqual(out, test.expected) {
+			t.Errorf("expected: %v, got %v", test.expected, out)
+		}
+	}
+}