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6a5acd753a
Under certain conditions, `howSimilarString` could reach a divide-by- zero situation which causes bogus values to print in the cache potential column of the template hints output. This situation essentially causes a `int(math.NaN())` value to be returned and hilarity ensues thereafter.
70 lines
2.5 KiB
Go
70 lines
2.5 KiB
Go
// Copyright 2017 The Hugo Authors. All rights reserved.
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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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// 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 metrics
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import (
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"html/template"
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"strings"
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"testing"
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"github.com/gohugoio/hugo/resources/page"
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qt "github.com/frankban/quicktest"
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)
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func TestSimilarPercentage(t *testing.T) {
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c := qt.New(t)
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sentence := "this is some words about nothing, Hugo!"
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words := strings.Fields(sentence)
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for i, j := 0, len(words)-1; i < j; i, j = i+1, j-1 {
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words[i], words[j] = words[j], words[i]
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}
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sentenceReversed := strings.Join(words, " ")
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c.Assert(howSimilar("Hugo Rules", "Hugo Rules"), qt.Equals, 100)
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c.Assert(howSimilar("Hugo Rules", "Hugo Rocks"), qt.Equals, 50)
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c.Assert(howSimilar("The Hugo Rules", "The Hugo Rocks"), qt.Equals, 66)
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c.Assert(howSimilar("The Hugo Rules", "The Hugo"), qt.Equals, 66)
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c.Assert(howSimilar("The Hugo", "The Hugo Rules"), qt.Equals, 66)
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c.Assert(howSimilar("Totally different", "Not Same"), qt.Equals, 0)
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c.Assert(howSimilar(sentence, sentenceReversed), qt.Equals, 14)
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c.Assert(howSimilar(template.HTML("Hugo Rules"), template.HTML("Hugo Rules")), qt.Equals, 100)
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c.Assert(howSimilar(map[string]any{"a": 32, "b": 33}, map[string]any{"a": 32, "b": 33}), qt.Equals, 100)
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c.Assert(howSimilar(map[string]any{"a": 32, "b": 33}, map[string]any{"a": 32, "b": 34}), qt.Equals, 0)
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c.Assert(howSimilar("\n", ""), qt.Equals, 100)
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}
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type testStruct struct {
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Name string
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}
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func TestSimilarPercentageNonString(t *testing.T) {
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c := qt.New(t)
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c.Assert(howSimilar(page.NopPage, page.NopPage), qt.Equals, 100)
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c.Assert(howSimilar(page.Pages{}, page.Pages{}), qt.Equals, 90)
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c.Assert(howSimilar(testStruct{Name: "A"}, testStruct{Name: "B"}), qt.Equals, 0)
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c.Assert(howSimilar(testStruct{Name: "A"}, testStruct{Name: "A"}), qt.Equals, 100)
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}
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func BenchmarkHowSimilar(b *testing.B) {
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s1 := "Hugo is cool and " + strings.Repeat("fun ", 10) + "!"
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s2 := "Hugo is cool and " + strings.Repeat("cool ", 10) + "!"
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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howSimilar(s1, s2)
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}
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}
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