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
|
// Copyright (c) 2014 Couchbase, Inc.
//
// 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 porter
import (
"reflect"
"testing"
"github.com/blevesearch/bleve/analysis"
)
func TestPorterStemmer(t *testing.T) {
inputTokenStream := analysis.TokenStream{
&analysis.Token{
Term: []byte("walking"),
},
&analysis.Token{
Term: []byte("talked"),
},
&analysis.Token{
Term: []byte("business"),
},
&analysis.Token{
Term: []byte("protected"),
KeyWord: true,
},
&analysis.Token{
Term: []byte("cat"),
},
&analysis.Token{
Term: []byte("done"),
},
// a term which does stem, but does not change length
&analysis.Token{
Term: []byte("marty"),
},
}
expectedTokenStream := analysis.TokenStream{
&analysis.Token{
Term: []byte("walk"),
},
&analysis.Token{
Term: []byte("talk"),
},
&analysis.Token{
Term: []byte("busi"),
},
&analysis.Token{
Term: []byte("protected"),
KeyWord: true,
},
&analysis.Token{
Term: []byte("cat"),
},
&analysis.Token{
Term: []byte("done"),
},
&analysis.Token{
Term: []byte("marti"),
},
}
filter := NewPorterStemmer()
ouputTokenStream := filter.Filter(inputTokenStream)
if !reflect.DeepEqual(ouputTokenStream, expectedTokenStream) {
t.Errorf("expected %#v got %#v", expectedTokenStream[3], ouputTokenStream[3])
}
}
func BenchmarkPorterStemmer(b *testing.B) {
inputTokenStream := analysis.TokenStream{
&analysis.Token{
Term: []byte("walking"),
},
&analysis.Token{
Term: []byte("talked"),
},
&analysis.Token{
Term: []byte("business"),
},
&analysis.Token{
Term: []byte("protected"),
KeyWord: true,
},
&analysis.Token{
Term: []byte("cat"),
},
&analysis.Token{
Term: []byte("done"),
},
}
filter := NewPorterStemmer()
b.ResetTimer()
for i := 0; i < b.N; i++ {
filter.Filter(inputTokenStream)
}
}
|
