hugo

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error_locator_test.go (3549B)

    1 // Copyright 2022 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 herrors contains common Hugo errors and error related utilities.
   15 package herrors
   16 
   17 import (
   18 	"strings"
   19 	"testing"
   20 
   21 	qt "github.com/frankban/quicktest"
   22 )
   23 
   24 func TestErrorLocator(t *testing.T) {
   25 	c := qt.New(t)
   26 
   27 	lineMatcher := func(m LineMatcher) int {
   28 		if strings.Contains(m.Line, "THEONE") {
   29 			return 1
   30 		}
   31 		return -1
   32 	}
   33 
   34 	lines := `LINE 1
   35 LINE 2
   36 LINE 3
   37 LINE 4
   38 This is THEONE
   39 LINE 6
   40 LINE 7
   41 LINE 8
   42 `
   43 
   44 	location := locateErrorInString(lines, lineMatcher)
   45 	pos := location.Position
   46 	c.Assert(location.Lines, qt.DeepEquals, []string{"LINE 3", "LINE 4", "This is THEONE", "LINE 6", "LINE 7"})
   47 
   48 	c.Assert(pos.LineNumber, qt.Equals, 5)
   49 	c.Assert(location.LinesPos, qt.Equals, 2)
   50 
   51 	locate := func(s string, m LineMatcherFn) *ErrorContext {
   52 		ctx := locateErrorInString(s, m)
   53 		return ctx
   54 	}
   55 
   56 	c.Assert(locate(`This is THEONE`, lineMatcher).Lines, qt.DeepEquals, []string{"This is THEONE"})
   57 
   58 	location = locateErrorInString(`L1
   59 This is THEONE
   60 L2
   61 `, lineMatcher)
   62 	pos = location.Position
   63 	c.Assert(pos.LineNumber, qt.Equals, 2)
   64 	c.Assert(location.LinesPos, qt.Equals, 1)
   65 	c.Assert(location.Lines, qt.DeepEquals, []string{"L1", "This is THEONE", "L2", ""})
   66 
   67 	location = locate(`This is THEONE
   68 L2
   69 `, lineMatcher)
   70 	c.Assert(location.LinesPos, qt.Equals, 0)
   71 	c.Assert(location.Lines, qt.DeepEquals, []string{"This is THEONE", "L2", ""})
   72 
   73 	location = locate(`L1
   74 This THEONE
   75 `, lineMatcher)
   76 	c.Assert(location.Lines, qt.DeepEquals, []string{"L1", "This THEONE", ""})
   77 	c.Assert(location.LinesPos, qt.Equals, 1)
   78 
   79 	location = locate(`L1
   80 L2
   81 This THEONE
   82 `, lineMatcher)
   83 	c.Assert(location.Lines, qt.DeepEquals, []string{"L1", "L2", "This THEONE", ""})
   84 	c.Assert(location.LinesPos, qt.Equals, 2)
   85 
   86 	location = locateErrorInString("NO MATCH", lineMatcher)
   87 	pos = location.Position
   88 	c.Assert(pos.LineNumber, qt.Equals, 0)
   89 	c.Assert(location.LinesPos, qt.Equals, -1)
   90 	c.Assert(len(location.Lines), qt.Equals, 0)
   91 
   92 	lineMatcher = func(m LineMatcher) int {
   93 		if m.LineNumber == 6 {
   94 			return 1
   95 		}
   96 		return -1
   97 	}
   98 
   99 	location = locateErrorInString(`A
  100 B
  101 C
  102 D
  103 E
  104 F
  105 G
  106 H
  107 I
  108 J`, lineMatcher)
  109 	pos = location.Position
  110 
  111 	c.Assert(location.Lines, qt.DeepEquals, []string{"D", "E", "F", "G", "H"})
  112 	c.Assert(pos.LineNumber, qt.Equals, 6)
  113 	c.Assert(location.LinesPos, qt.Equals, 2)
  114 
  115 	// Test match EOF
  116 	lineMatcher = func(m LineMatcher) int {
  117 		if m.LineNumber == 4 {
  118 			return 1
  119 		}
  120 		return -1
  121 	}
  122 
  123 	location = locateErrorInString(`A
  124 B
  125 C
  126 `, lineMatcher)
  127 
  128 	pos = location.Position
  129 
  130 	c.Assert(location.Lines, qt.DeepEquals, []string{"B", "C", ""})
  131 	c.Assert(pos.LineNumber, qt.Equals, 4)
  132 	c.Assert(location.LinesPos, qt.Equals, 2)
  133 
  134 	offsetMatcher := func(m LineMatcher) int {
  135 		if m.Offset == 1 {
  136 			return 1
  137 		}
  138 		return -1
  139 	}
  140 
  141 	location = locateErrorInString(`A
  142 B
  143 C
  144 D
  145 E`, offsetMatcher)
  146 
  147 	pos = location.Position
  148 
  149 	c.Assert(location.Lines, qt.DeepEquals, []string{"A", "B", "C", "D"})
  150 	c.Assert(pos.LineNumber, qt.Equals, 2)
  151 	c.Assert(location.LinesPos, qt.Equals, 1)
  152 }