faa07ac3a6
the token stream resulting from the removal of stop words must be shorter or the same length as the original, so we just reuse it and truncate it at the end.
120 lines
2.7 KiB
Go
120 lines
2.7 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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// except in compliance with the License. You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed under the
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// License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
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// either express or implied. See the License for the specific language governing permissions
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// and limitations under the License.
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package stop_tokens_filter
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import (
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"reflect"
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"testing"
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"github.com/blevesearch/bleve/analysis"
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"github.com/blevesearch/bleve/analysis/token_map"
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"github.com/blevesearch/bleve/registry"
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)
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func TestStopWordsFilter(t *testing.T) {
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inputTokenStream := analysis.TokenStream{
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&analysis.Token{
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Term: []byte("a"),
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},
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&analysis.Token{
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Term: []byte("walk"),
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},
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&analysis.Token{
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Term: []byte("in"),
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},
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&analysis.Token{
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Term: []byte("the"),
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},
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&analysis.Token{
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Term: []byte("park"),
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},
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}
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expectedTokenStream := analysis.TokenStream{
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&analysis.Token{
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Term: []byte("walk"),
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},
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&analysis.Token{
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Term: []byte("park"),
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},
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}
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cache := registry.NewCache()
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stopListConfig := map[string]interface{}{
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"type": token_map.Name,
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"tokens": []interface{}{"a", "in", "the"},
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}
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_, err := cache.DefineTokenMap("stop_test", stopListConfig)
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if err != nil {
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t.Fatal(err)
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}
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stopConfig := map[string]interface{}{
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"type": "stop_tokens",
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"stop_token_map": "stop_test",
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}
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stopFilter, err := cache.DefineTokenFilter("stop_test", stopConfig)
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if err != nil {
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t.Fatal(err)
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}
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ouputTokenStream := stopFilter.Filter(inputTokenStream)
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if !reflect.DeepEqual(ouputTokenStream, expectedTokenStream) {
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t.Errorf("expected %#v got %#v", expectedTokenStream, ouputTokenStream)
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}
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}
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func BenchmarkStopWordsFilter(b *testing.B) {
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inputTokenStream := analysis.TokenStream{
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&analysis.Token{
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Term: []byte("a"),
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},
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&analysis.Token{
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Term: []byte("walk"),
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},
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&analysis.Token{
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Term: []byte("in"),
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},
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&analysis.Token{
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Term: []byte("the"),
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},
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&analysis.Token{
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Term: []byte("park"),
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},
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}
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cache := registry.NewCache()
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stopListConfig := map[string]interface{}{
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"type": token_map.Name,
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"tokens": []interface{}{"a", "in", "the"},
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}
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_, err := cache.DefineTokenMap("stop_test", stopListConfig)
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if err != nil {
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b.Fatal(err)
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}
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stopConfig := map[string]interface{}{
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"type": "stop_tokens",
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"stop_token_map": "stop_test",
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}
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stopFilter, err := cache.DefineTokenFilter("stop_test", stopConfig)
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if err != nil {
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b.Fatal(err)
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}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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stopFilter.Filter(inputTokenStream)
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}
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}
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