github.com/dolthub/go-mysql-server@v0.18.0/internal/regex/regex_test.go (about)

     1  // Copyright 2020-2021 Dolthub, Inc.
     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  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package regex
    16  
    17  import (
    18  	"testing"
    19  
    20  	"github.com/stretchr/testify/require"
    21  )
    22  
    23  func dummy(s string) (Matcher, Disposer, error) { return nil, nil, nil }
    24  
    25  func getDefault() string {
    26  	for _, n := range Engines() {
    27  		if n == "oniguruma" {
    28  			return n
    29  		}
    30  	}
    31  
    32  	return "go"
    33  }
    34  
    35  func TestRegistration(t *testing.T) {
    36  	require := require.New(t)
    37  
    38  	engines := Engines()
    39  	require.NotNil(engines)
    40  	number := len(engines)
    41  
    42  	defaultEngine := getDefault()
    43  	require.Equal(defaultEngine, Default())
    44  
    45  	err := Register("", dummy)
    46  	require.Equal(true, ErrRegexNameEmpty.Is(err))
    47  	engines = Engines()
    48  	require.Len(engines, number)
    49  
    50  	err = Register("nil", dummy)
    51  	require.NoError(err)
    52  	require.Len(Engines(), number+1)
    53  
    54  	matcher, disposer, err := New("nil", "")
    55  	require.NoError(err)
    56  	require.Nil(matcher)
    57  	require.Nil(disposer)
    58  }
    59  
    60  func TestDefault(t *testing.T) {
    61  	require := require.New(t)
    62  
    63  	def := getDefault()
    64  	require.Equal(def, Default())
    65  
    66  	SetDefault("default")
    67  	require.Equal("default", Default())
    68  
    69  	SetDefault("")
    70  	require.Equal(def, Default())
    71  }
    72  
    73  func TestMatcher(t *testing.T) {
    74  	for _, name := range Engines() {
    75  		if name == "nil" {
    76  			continue
    77  		}
    78  
    79  		t.Run(name, func(t *testing.T) {
    80  			m, d, err := New(name, "a{3}")
    81  			require.NoError(t, err)
    82  
    83  			require.Equal(t, true, m.Match("ooaaaoo"))
    84  			require.Equal(t, false, m.Match("ooaaoo"))
    85  
    86  			d.Dispose()
    87  		})
    88  	}
    89  }
    90  
    91  func TestMatcherMultiPatterns(t *testing.T) {
    92  	const (
    93  		email = `[\w\.+-]+@[\w\.-]+\.[\w\.-]+`
    94  		url   = `[\w]+://[^/\s?#]+[^\s?#]+(?:\?[^\s#]*)?(?:#[^\s]*)?`
    95  		ip    = `(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9])\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9])`
    96  
    97  		data = `mysql://root@255.255.255.255:3306`
    98  	)
    99  
   100  	for _, name := range Engines() {
   101  		if name == "nil" {
   102  			continue
   103  		}
   104  
   105  		t.Run(name, func(t *testing.T) {
   106  			m, d, err := New(name, email)
   107  			require.NoError(t, err)
   108  			require.Equal(t, true, m.Match(data))
   109  			d.Dispose()
   110  
   111  			m, d, err = New(name, url)
   112  			require.NoError(t, err)
   113  			require.Equal(t, true, m.Match(data))
   114  			d.Dispose()
   115  
   116  			m, d, err = New(name, ip)
   117  			require.NoError(t, err)
   118  			require.Equal(t, true, m.Match(data))
   119  			d.Dispose()
   120  		})
   121  	}
   122  }