aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/node/test/metadata_test.js
blob: 4ba54e0aa009223951a6cc3613e908a4a5cc3163 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
/*
 *
 * Copyright 2015 gRPC 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.
 *
 */

'use strict';

var Metadata = require('../src/metadata.js');

var assert = require('assert');

describe('Metadata', function() {
  var metadata;
  beforeEach(function() {
    metadata = new Metadata();
  });
  describe('#set', function() {
    it('Only accepts string values for non "-bin" keys', function() {
      assert.throws(function() {
        metadata.set('key', new Buffer('value'));
      });
      assert.doesNotThrow(function() {
        metadata.set('key', 'value');
      });
    });
    it('Only accepts Buffer values for "-bin" keys', function() {
      assert.throws(function() {
        metadata.set('key-bin', 'value');
      });
      assert.doesNotThrow(function() {
        metadata.set('key-bin', new Buffer('value'));
      });
    });
    it('Rejects invalid keys', function() {
      assert.throws(function() {
        metadata.set('key$', 'value');
      });
      assert.throws(function() {
        metadata.set('', 'value');
      });
    });
    it('Rejects values with non-ASCII characters', function() {
      assert.throws(function() {
        metadata.set('key', 'résumé');
      });
    });
    it('Saves values that can be retrieved', function() {
      metadata.set('key', 'value');
      assert.deepEqual(metadata.get('key'), ['value']);
    });
    it('Overwrites previous values', function() {
      metadata.set('key', 'value1');
      metadata.set('key', 'value2');
      assert.deepEqual(metadata.get('key'), ['value2']);
    });
    it('Normalizes keys', function() {
      metadata.set('Key', 'value1');
      assert.deepEqual(metadata.get('key'), ['value1']);
      metadata.set('KEY', 'value2');
      assert.deepEqual(metadata.get('key'), ['value2']);
    });
  });
  describe('#add', function() {
    it('Only accepts string values for non "-bin" keys', function() {
      assert.throws(function() {
        metadata.add('key', new Buffer('value'));
      });
      assert.doesNotThrow(function() {
        metadata.add('key', 'value');
      });
    });
    it('Only accepts Buffer values for "-bin" keys', function() {
      assert.throws(function() {
        metadata.add('key-bin', 'value');
      });
      assert.doesNotThrow(function() {
        metadata.add('key-bin', new Buffer('value'));
      });
    });
    it('Rejects invalid keys', function() {
      assert.throws(function() {
        metadata.add('key$', 'value');
      });
      assert.throws(function() {
        metadata.add('', 'value');
      });
    });
    it('Saves values that can be retrieved', function() {
      metadata.add('key', 'value');
      assert.deepEqual(metadata.get('key'), ['value']);
    });
    it('Combines with previous values', function() {
      metadata.add('key', 'value1');
      metadata.add('key', 'value2');
      assert.deepEqual(metadata.get('key'), ['value1', 'value2']);
    });
    it('Normalizes keys', function() {
      metadata.add('Key', 'value1');
      assert.deepEqual(metadata.get('key'), ['value1']);
      metadata.add('KEY', 'value2');
      assert.deepEqual(metadata.get('key'), ['value1', 'value2']);
    });
  });
  describe('#remove', function() {
    it('clears values from a key', function() {
      metadata.add('key', 'value');
      metadata.remove('key');
      assert.deepEqual(metadata.get('key'), []);
    });
    it('Normalizes keys', function() {
      metadata.add('key', 'value');
      metadata.remove('KEY');
      assert.deepEqual(metadata.get('key'), []);
    });
  });
  describe('#get', function() {
    beforeEach(function() {
      metadata.add('key', 'value1');
      metadata.add('key', 'value2');
      metadata.add('key-bin', new Buffer('value'));
    });
    it('gets all values associated with a key', function() {
      assert.deepEqual(metadata.get('key'), ['value1', 'value2']);
    });
    it('Normalizes keys', function() {
      assert.deepEqual(metadata.get('KEY'), ['value1', 'value2']);
    });
    it('returns an empty list for non-existent keys', function() {
      assert.deepEqual(metadata.get('non-existent-key'), []);
    });
    it('returns Buffers for "-bin" keys', function() {
      assert(metadata.get('key-bin')[0] instanceof Buffer);
    });
  });
  describe('#getMap', function() {
    it('gets a map of keys to values', function() {
      metadata.add('key1', 'value1');
      metadata.add('Key2', 'value2');
      metadata.add('KEY3', 'value3');
      assert.deepEqual(metadata.getMap(),
                       {key1: 'value1',
                        key2: 'value2',
                        key3: 'value3'});
    });
  });
  describe('#clone', function() {
    it('retains values from the original', function() {
      metadata.add('key', 'value');
      var copy = metadata.clone();
      assert.deepEqual(copy.get('key'), ['value']);
    });
    it('Does not see newly added values', function() {
      metadata.add('key', 'value1');
      var copy = metadata.clone();
      metadata.add('key', 'value2');
      assert.deepEqual(copy.get('key'), ['value1']);
    });
    it('Does not add new values to the original', function() {
      metadata.add('key', 'value1');
      var copy = metadata.clone();
      copy.add('key', 'value2');
      assert.deepEqual(metadata.get('key'), ['value1']);
    });
  });
});