120 lines
2.3 KiB
Go
120 lines
2.3 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 search
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import (
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"testing"
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)
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func TestLevenshteinDistance(t *testing.T) {
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tests := []struct {
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a string
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b string
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dist int
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}{
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{
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"water",
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"atec",
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2,
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},
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{
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"water",
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"aphex",
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4,
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},
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}
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for _, test := range tests {
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actual := LevenshteinDistance(test.a, test.b)
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if actual != test.dist {
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t.Errorf("expected %d, got %d for %s and %s", test.dist, actual, test.a, test.b)
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}
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}
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}
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func TestLevenshteinDistanceMax(t *testing.T) {
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tests := []struct {
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a string
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b string
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max int
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dist int
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exceeded bool
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}{
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{
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a: "water",
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b: "atec",
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max: 1,
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dist: 1,
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exceeded: true,
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},
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{
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a: "water",
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b: "christmas",
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max: 3,
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dist: 3,
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exceeded: true,
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},
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{
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a: "water",
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b: "water",
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max: 1,
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dist: 0,
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exceeded: false,
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},
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}
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for _, test := range tests {
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actual, exceeded := LevenshteinDistanceMax(test.a, test.b, test.max)
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if actual != test.dist || exceeded != test.exceeded {
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t.Errorf("expected %d %t, got %d %t for %s and %s", test.dist, test.exceeded, actual, exceeded, test.a, test.b)
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}
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}
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}
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// 5 terms that are less than 2
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// 5 terms that are more than 2
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var benchmarkTerms = []string{
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"watex",
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"aters",
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"wayer",
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"wbter",
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"yater",
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"christmas",
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"waterwaterwater",
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"watcatdogfish",
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"q",
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"couchbase",
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}
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func BenchmarkLevenshteinDistance(b *testing.B) {
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a := "water"
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for i := 0; i < b.N; i++ {
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for _, t := range benchmarkTerms {
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LevenshteinDistance(a, t)
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}
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}
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}
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func BenchmarkLevenshteinDistanceMax(b *testing.B) {
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a := "water"
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for i := 0; i < b.N; i++ {
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for _, t := range benchmarkTerms {
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LevenshteinDistanceMax(a, t, 2)
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}
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}
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}
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