193 lines
3.8 KiB
Go
193 lines
3.8 KiB
Go
// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ngram
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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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)
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func TestNgramFilter(t *testing.T) {
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tests := []struct {
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min int
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max int
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input analysis.TokenStream
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output analysis.TokenStream
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}{
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{
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min: 1,
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max: 1,
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("abcde"),
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},
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},
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output: 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("b"),
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},
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&analysis.Token{
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Term: []byte("c"),
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},
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&analysis.Token{
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Term: []byte("d"),
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},
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&analysis.Token{
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Term: []byte("e"),
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},
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},
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},
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{
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min: 2,
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max: 2,
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("abcde"),
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},
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},
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output: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("ab"),
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},
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&analysis.Token{
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Term: []byte("bc"),
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},
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&analysis.Token{
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Term: []byte("cd"),
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},
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&analysis.Token{
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Term: []byte("de"),
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},
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},
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},
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{
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min: 1,
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max: 3,
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input: analysis.TokenStream{
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&analysis.Token{
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Term: []byte("abcde"),
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},
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},
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output: 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("ab"),
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},
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&analysis.Token{
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Term: []byte("abc"),
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},
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&analysis.Token{
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Term: []byte("b"),
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},
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&analysis.Token{
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Term: []byte("bc"),
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},
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&analysis.Token{
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Term: []byte("bcd"),
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},
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&analysis.Token{
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Term: []byte("c"),
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},
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&analysis.Token{
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Term: []byte("cd"),
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},
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&analysis.Token{
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Term: []byte("cde"),
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},
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&analysis.Token{
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Term: []byte("d"),
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},
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&analysis.Token{
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Term: []byte("de"),
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},
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&analysis.Token{
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Term: []byte("e"),
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},
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},
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},
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}
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for _, test := range tests {
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ngramFilter := NewNgramFilter(test.min, test.max)
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actual := ngramFilter.Filter(test.input)
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if !reflect.DeepEqual(actual, test.output) {
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t.Errorf("expected %s, got %s", test.output, actual)
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}
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}
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}
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func TestConversionInt(t *testing.T) {
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config := map[string]interface{}{
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"type": Name,
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"min": 3,
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"max": 8,
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}
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f, err := NgramFilterConstructor(config, nil)
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if err != nil {
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t.Errorf("Failed to construct the ngram filter: %v", err)
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}
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ngram := f.(*NgramFilter)
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if ngram.minLength != 3 && ngram.maxLength != 8 {
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t.Errorf("Failed to construct the bounds. Got %v and %v.", ngram.minLength, ngram.maxLength)
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}
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}
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func TestConversionFloat(t *testing.T) {
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config := map[string]interface{}{
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"type": Name,
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"min": float64(3),
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"max": float64(8),
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}
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f, err := NgramFilterConstructor(config, nil)
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if err != nil {
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t.Errorf("Failed to construct the ngram filter: %v", err)
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}
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ngram := f.(*NgramFilter)
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if ngram.minLength != 3 && ngram.maxLength != 8 {
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t.Errorf("Failed to construct the bounds. Got %v and %v.", ngram.minLength, ngram.maxLength)
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}
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}
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func TestBadConversion(t *testing.T) {
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config := map[string]interface{}{
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"type": Name,
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"min": "3",
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}
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_, err := NgramFilterConstructor(config, nil)
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if err == nil {
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t.Errorf("Expected conversion error.")
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}
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if err.Error() != "failed to convert to int value" {
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t.Errorf("Wrong error recevied. Got %v.", err)
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}
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}
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