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      1 // Copyright 2011 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package template
      6 
      7 import (
      8 	"bytes"
      9 	"strings"
     10 	"testing"
     11 )
     12 
     13 func TestFindEndTag(t *testing.T) {
     14 	tests := []struct {
     15 		s, tag string
     16 		want   int
     17 	}{
     18 		{"", "tag", -1},
     19 		{"hello </textarea> hello", "textarea", 6},
     20 		{"hello </TEXTarea> hello", "textarea", 6},
     21 		{"hello </textAREA>", "textarea", 6},
     22 		{"hello </textarea", "textareax", -1},
     23 		{"hello </textarea>", "tag", -1},
     24 		{"hello tag </textarea", "tag", -1},
     25 		{"hello </tag> </other> </textarea> <other>", "textarea", 22},
     26 		{"</textarea> <other>", "textarea", 0},
     27 		{"<div> </div> </TEXTAREA>", "textarea", 13},
     28 		{"<div> </div> </TEXTAREA\t>", "textarea", 13},
     29 		{"<div> </div> </TEXTAREA >", "textarea", 13},
     30 		{"<div> </div> </TEXTAREAfoo", "textarea", -1},
     31 		{"</TEXTAREAfoo </textarea>", "textarea", 14},
     32 		{"<</script >", "script", 1},
     33 		{"</script>", "textarea", -1},
     34 	}
     35 	for _, test := range tests {
     36 		if got := indexTagEnd([]byte(test.s), []byte(test.tag)); test.want != got {
     37 			t.Errorf("%q/%q: want\n\t%d\nbut got\n\t%d", test.s, test.tag, test.want, got)
     38 		}
     39 	}
     40 }
     41 
     42 func BenchmarkTemplateSpecialTags(b *testing.B) {
     43 
     44 	r := struct {
     45 		Name, Gift string
     46 	}{"Aunt Mildred", "bone china tea set"}
     47 
     48 	h1 := "<textarea> Hello Hello Hello </textarea> "
     49 	h2 := "<textarea> <p> Dear {{.Name}},\n{{with .Gift}}Thank you for the lovely {{.}}. {{end}}\nBest wishes. </p>\n</textarea>"
     50 	html := strings.Repeat(h1, 100) + h2 + strings.Repeat(h1, 100) + h2
     51 
     52 	var buf bytes.Buffer
     53 	for i := 0; i < b.N; i++ {
     54 		tmpl := Must(New("foo").Parse(html))
     55 		if err := tmpl.Execute(&buf, r); err != nil {
     56 			b.Fatal(err)
     57 		}
     58 		buf.Reset()
     59 	}
     60 }
     61