github.com/anakojm/hugo-katex@v0.0.0-20231023141351-42d6f5de9c0b/tpl/strings/regexp_test.go (about)

     1  // Copyright 2017 The Hugo Authors. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  // http://www.apache.org/licenses/LICENSE-2.0
     7  //
     8  // Unless required by applicable law or agreed to in writing, software
     9  // distributed under the License is distributed on an "AS IS" BASIS,
    10  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    11  // See the License for the specific language governing permissions and
    12  // limitations under the License.
    13  
    14  package strings
    15  
    16  import (
    17  	"testing"
    18  
    19  	qt "github.com/frankban/quicktest"
    20  )
    21  
    22  func TestFindRE(t *testing.T) {
    23  	t.Parallel()
    24  	c := qt.New(t)
    25  
    26  	for _, test := range []struct {
    27  		expr    string
    28  		content any
    29  		limit   any
    30  		expect  any
    31  	}{
    32  		{"[G|g]o", "Hugo is a static site generator written in Go.", 2, []string{"go", "Go"}},
    33  		{"[G|g]o", "Hugo is a static site generator written in Go.", -1, []string{"go", "Go"}},
    34  		{"[G|g]o", "Hugo is a static site generator written in Go.", 1, []string{"go"}},
    35  		{"[G|g]o", "Hugo is a static site generator written in Go.", "1", []string{"go"}},
    36  		{"[G|g]o", "Hugo is a static site generator written in Go.", nil, []string(nil)},
    37  		// errors
    38  		{"[G|go", "Hugo is a static site generator written in Go.", nil, false},
    39  		{"[G|g]o", t, nil, false},
    40  	} {
    41  		result, err := ns.FindRE(test.expr, test.content, test.limit)
    42  
    43  		if b, ok := test.expect.(bool); ok && !b {
    44  			c.Assert(err, qt.Not(qt.IsNil))
    45  			continue
    46  		}
    47  
    48  		c.Assert(err, qt.IsNil)
    49  		c.Check(result, qt.DeepEquals, test.expect)
    50  	}
    51  }
    52  
    53  func TestFindRESubmatch(t *testing.T) {
    54  	t.Parallel()
    55  	c := qt.New(t)
    56  
    57  	for _, test := range []struct {
    58  		expr    string
    59  		content any
    60  		limit   any
    61  		expect  any
    62  	}{
    63  		{`<a\s*href="(.+?)">(.+?)</a>`, `<li><a href="#foo">Foo</a></li><li><a href="#bar">Bar</a></li>`, -1, [][]string{
    64  			{"<a href=\"#foo\">Foo</a>", "#foo", "Foo"},
    65  			{"<a href=\"#bar\">Bar</a>", "#bar", "Bar"},
    66  		}},
    67  		// Some simple cases.
    68  		{"([G|g]o)", "Hugo is a static site generator written in Go.", -1, [][]string{{"go", "go"}, {"Go", "Go"}}},
    69  		{"([G|g]o)", "Hugo is a static site generator written in Go.", 1, [][]string{{"go", "go"}}},
    70  
    71  		// errors
    72  		{"([G|go", "Hugo is a static site generator written in Go.", nil, false},
    73  		{"([G|g]o)", t, nil, false},
    74  	} {
    75  		result, err := ns.FindRESubmatch(test.expr, test.content, test.limit)
    76  
    77  		if b, ok := test.expect.(bool); ok && !b {
    78  			c.Assert(err, qt.Not(qt.IsNil))
    79  			continue
    80  		}
    81  
    82  		c.Assert(err, qt.IsNil)
    83  		c.Check(result, qt.DeepEquals, test.expect)
    84  	}
    85  }
    86  func TestReplaceRE(t *testing.T) {
    87  	t.Parallel()
    88  	c := qt.New(t)
    89  
    90  	for _, test := range []struct {
    91  		pattern any
    92  		repl    any
    93  		s       any
    94  		n       []any
    95  		expect  any
    96  	}{
    97  		{"^https?://([^/]+).*", "$1", "http://gohugo.io/docs", nil, "gohugo.io"},
    98  		{"^https?://([^/]+).*", "$2", "http://gohugo.io/docs", nil, ""},
    99  		{"(ab)", "AB", "aabbaab", nil, "aABbaAB"},
   100  		{"(ab)", "AB", "aabbaab", []any{1}, "aABbaab"},
   101  		// errors
   102  		{"(ab", "AB", "aabb", nil, false}, // invalid re
   103  		{tstNoStringer{}, "$2", "http://gohugo.io/docs", nil, false},
   104  		{"^https?://([^/]+).*", tstNoStringer{}, "http://gohugo.io/docs", nil, false},
   105  		{"^https?://([^/]+).*", "$2", tstNoStringer{}, nil, false},
   106  	} {
   107  
   108  		var (
   109  			result string
   110  			err    error
   111  		)
   112  		if len(test.n) > 0 {
   113  			result, err = ns.ReplaceRE(test.pattern, test.repl, test.s, test.n...)
   114  		} else {
   115  			result, err = ns.ReplaceRE(test.pattern, test.repl, test.s)
   116  		}
   117  
   118  		if b, ok := test.expect.(bool); ok && !b {
   119  			c.Assert(err, qt.Not(qt.IsNil))
   120  			continue
   121  		}
   122  
   123  		c.Assert(err, qt.IsNil)
   124  		c.Check(result, qt.Equals, test.expect)
   125  	}
   126  }