1 files changed, 244 insertions, 0 deletions
diff --git a/helpers/content_test.go b/helpers/content_test.go
new file mode 100644
index 000000000..54b7ef3f9
--- /dev/null
+++ b/helpers/content_test.go
@@ -0,0 +1,244 @@
+// Copyright 2019 The Hugo Authors. All rights reserved.
+//
+// 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 helpers
+
+import (
+	"bytes"
+	"html/template"
+	"strings"
+	"testing"
+
+	"github.com/spf13/afero"
+
+	"github.com/gohugoio/hugo/common/loggers"
+	"github.com/gohugoio/hugo/config"
+
+	qt "github.com/frankban/quicktest"
+)
+
+const tstHTMLContent = "<!DOCTYPE html><html><head><script src=\"http://two/foobar.js\"></script></head><body><nav><ul><li hugo-nav=\"section_0\"></li><li hugo-nav=\"section_1\"></li></ul></nav><article>content <a href=\"http://two/foobar\">foobar</a>. Follow up</article><p>This is some text.<br>And some more.</p></body></html>"
+
+func TestTrimShortHTML(t *testing.T) {
+	tests := []struct {
+		input, output []byte
+	}{
+		{[]byte(""), []byte("")},
+		{[]byte("Plain text"), []byte("Plain text")},
+		{[]byte("  \t\n Whitespace text\n\n"), []byte("Whitespace text")},
+		{[]byte("<p>Simple paragraph</p>"), []byte("Simple paragraph")},
+		{[]byte("\n  \n \t  <p> \t Whitespace\nHTML  \n\t </p>\n\t"), []byte("Whitespace\nHTML")},
+		{[]byte("<p>Multiple</p><p>paragraphs</p>"), []byte("<p>Multiple</p><p>paragraphs</p>")},
+		{[]byte("<p>Nested<p>paragraphs</p></p>"), []byte("<p>Nested<p>paragraphs</p></p>")},
+		{[]byte("<p>Hello</p>\n<ul>\n<li>list1</li>\n<li>list2</li>\n</ul>"), []byte("<p>Hello</p>\n<ul>\n<li>list1</li>\n<li>list2</li>\n</ul>")},
+	}
+
+	c := newTestContentSpec()
+	for i, test := range tests {
+		output := c.TrimShortHTML(test.input)
+		if !bytes.Equal(test.output, output) {
+			t.Errorf("Test %d failed. Expected %q got %q", i, test.output, output)
+		}
+	}
+}
+
+func TestStripEmptyNav(t *testing.T) {
+	c := qt.New(t)
+	cleaned := stripEmptyNav([]byte("do<nav>\n</nav>\n\nbedobedo"))
+	c.Assert(cleaned, qt.DeepEquals, []byte("dobedobedo"))
+}
+
+func TestBytesToHTML(t *testing.T) {
+	c := qt.New(t)
+	c.Assert(BytesToHTML([]byte("dobedobedo")), qt.Equals, template.HTML("dobedobedo"))
+}
+
+func TestNewContentSpec(t *testing.T) {
+	cfg := config.NewWithTestDefaults()
+	c := qt.New(t)
+
+	cfg.Set("summaryLength", 32)
+	cfg.Set("buildFuture", true)
+	cfg.Set("buildExpired", true)
+	cfg.Set("buildDrafts", true)
+
+	spec, err := NewContentSpec(cfg, loggers.NewErrorLogger(), afero.NewMemMapFs(), nil)
+
+	c.Assert(err, qt.IsNil)
+	c.Assert(spec.summaryLength, qt.Equals, 32)
+	c.Assert(spec.BuildFuture, qt.Equals, true)
+	c.Assert(spec.BuildExpired, qt.Equals, true)
+	c.Assert(spec.BuildDrafts, qt.Equals, true)
+}
+
+var benchmarkTruncateString = strings.Repeat("This is a sentence about nothing.", 20)
+
+func BenchmarkTestTruncateWordsToWholeSentence(b *testing.B) {
+	c := newTestContentSpec()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		c.TruncateWordsToWholeSentence(benchmarkTruncateString)
+	}
+}
+
+func BenchmarkTestTruncateWordsToWholeSentenceOld(b *testing.B) {
+	c := newTestContentSpec()
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		c.truncateWordsToWholeSentenceOld(benchmarkTruncateString)
+	}
+}
+
+func TestTruncateWordsToWholeSentence(t *testing.T) {
+	c := newTestContentSpec()
+	type test struct {
+		input, expected string
+		max             int
+		truncated       bool
+	}
+	data := []test{
+		{"a b c", "a b c", 12, false},
+		{"a b c", "a b c", 3, false},
+		{"a", "a", 1, false},
+		{"This is a sentence.", "This is a sentence.", 5, false},
+		{"This is also a sentence!", "This is also a sentence!", 1, false},
+		{"To be. Or not to be. That's the question.", "To be.", 1, true},
+		{" \nThis is not a sentence\nAnd this is another", "This is not a sentence", 4, true},
+		{"", "", 10, false},
+		{"This... is a more difficult test?", "This... is a more difficult test?", 1, false},
+	}
+	for i, d := range data {
+		c.summaryLength = d.max
+		output, truncated := c.TruncateWordsToWholeSentence(d.input)
+		if d.expected != output {
+			t.Errorf("Test %d failed. Expected %q got %q", i, d.expected, output)
+		}
+
+		if d.truncated != truncated {
+			t.Errorf("Test %d failed. Expected truncated=%t got %t", i, d.truncated, truncated)
+		}
+	}
+}
+
+func TestTruncateWordsByRune(t *testing.T) {
+	c := newTestContentSpec()
+	type test struct {
+		input, expected string
+		max             int
+		truncated       bool
+	}
+	data := []test{
+		{"", "", 1, false},
+		{"a b c", "a b c", 12, false},
+		{"a b c", "a b c", 3, false},
+		{"a", "a", 1, false},
+		{"Hello 中国", "", 0, true},
+		{"这是中文，全中文。", "这是中文，", 5, true},
+		{"Hello 中国", "Hello 中", 2, true},
+		{"Hello 中国", "Hello 中国", 3, false},
+		{"Hello中国 Good 好的", "Hello中国 Good 好", 9, true},
+		{"This is a sentence.", "This is", 2, true},
+		{"This is also a sentence!", "This", 1, true},
+		{"To be. Or not to be. That's the question.", "To be. Or not", 4, true},
+		{" \nThis is    not a sentence\n ", "This is not", 3, true},
+	}
+	for i, d := range data {
+		c.summaryLength = d.max
+		output, truncated := c.TruncateWordsByRune(strings.Fields(d.input))
+		if d.expected != output {
+			t.Errorf("Test %d failed. Expected %q got %q", i, d.expected, output)
+		}
+
+		if d.truncated != truncated {
+			t.Errorf("Test %d failed. Expected truncated=%t got %t", i, d.truncated, truncated)
+		}
+	}
+}
+
+func TestExtractTOCNormalContent(t *testing.T) {
+	content := []byte("<nav>\n<ul>\nTOC<li><a href=\"#")
+
+	actualTocLessContent, actualToc := ExtractTOC(content)
+	expectedTocLess := []byte("TOC<li><a href=\"#")
+	expectedToc := []byte("<nav id=\"TableOfContents\">\n<ul>\n")
+
+	if !bytes.Equal(actualTocLessContent, expectedTocLess) {
+		t.Errorf("Actual tocless (%s) did not equal expected (%s) tocless content", actualTocLessContent, expectedTocLess)
+	}
+
+	if !bytes.Equal(actualToc, expectedToc) {
+		t.Errorf("Actual toc (%s) did not equal expected (%s) toc content", actualToc, expectedToc)
+	}
+}
+
+func TestExtractTOCGreaterThanSeventy(t *testing.T) {
+	content := []byte("<nav>\n<ul>\nTOC This is a very long content which will definitely be greater than seventy, I promise you that.<li><a href=\"#")
+
+	actualTocLessContent, actualToc := ExtractTOC(content)
+	// Because the start of Toc is greater than 70+startpoint of <li> content and empty TOC will be returned
+	expectedToc := []byte("")
+
+	if !bytes.Equal(actualTocLessContent, content) {
+		t.Errorf("Actual tocless (%s) did not equal expected (%s) tocless content", actualTocLessContent, content)
+	}
+
+	if !bytes.Equal(actualToc, expectedToc) {
+		t.Errorf("Actual toc (%s) did not equal expected (%s) toc content", actualToc, expectedToc)
+	}
+}
+
+func TestExtractNoTOC(t *testing.T) {
+	content := []byte("TOC")
+
+	actualTocLessContent, actualToc := ExtractTOC(content)
+	expectedToc := []byte("")
+
+	if !bytes.Equal(actualTocLessContent, content) {
+		t.Errorf("Actual tocless (%s) did not equal expected (%s) tocless content", actualTocLessContent, content)
+	}
+
+	if !bytes.Equal(actualToc, expectedToc) {
+		t.Errorf("Actual toc (%s) did not equal expected (%s) toc content", actualToc, expectedToc)
+	}
+}
+
+var totalWordsBenchmarkString = strings.Repeat("Hugo Rocks ", 200)
+
+func TestTotalWords(t *testing.T) {
+	for i, this := range []struct {
+		s     string
+		words int
+	}{
+		{"Two, Words!", 2},
+		{"Word", 1},
+		{"", 0},
+		{"One, Two,      Three", 3},
+		{totalWordsBenchmarkString, 400},
+	} {
+		actualWordCount := TotalWords(this.s)
+
+		if actualWordCount != this.words {
+			t.Errorf("[%d] Actual word count (%d) for test string (%s) did not match %d", i, actualWordCount, this.s, this.words)
+		}
+	}
+}
+
+func BenchmarkTotalWords(b *testing.B) {
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		wordCount := TotalWords(totalWordsBenchmarkString)
+		if wordCount != 400 {
+			b.Fatal("Wordcount error")
+		}
+	}
+}