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pint/internal/parser

internal/parser/read_test.go

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1package parser_test
2
3import (
4 "bytes"
5 "strconv"
6 "strings"
7 "testing"
8
9 "github.com/google/go-cmp/cmp"
10 "github.com/stretchr/testify/require"
11
12 "github.com/cloudflare/pint/internal/comments"
13 "github.com/cloudflare/pint/internal/parser"
14)
15
16func TestReadContent(t *testing.T) {
17 type testCaseT struct {
18 input []byte
19 output []byte
20 comments []comments.Comment
21 ignored bool
22 shouldError bool
23 }
24
25 testCases := []testCaseT{
26 {
27 input: []byte(""),
28 output: []byte(""),
29 },
30 {
31 input: []byte("\n"),
32 output: []byte("\n"),
33 },
34 {
35 input: []byte("\n \n"),
36 output: []byte("\n \n"),
37 },
38 {
39 input: []byte("foo bar"),
40 output: []byte("foo bar"),
41 },
42 {
43 input: []byte("foo bar\n"),
44 output: []byte("foo bar\n"),
45 },
46 {
47 input: []byte("line1\nline2"),
48 output: []byte("line1\nline2"),
49 },
50 {
51 input: []byte("line1\nline2\n"),
52 output: []byte("line1\nline2\n"),
53 },
54 {
55 input: []byte("line1\n\nline2\n\n"),
56 output: []byte("line1\n\nline2\n\n"),
57 },
58 {
59 input: []byte("# pint ignore/next-line\nfoo\n"),
60 output: []byte("# pint ignore/next-line\n \n"),
61 },
62 {
63 input: []byte("# pint ignore/next-line\nfoo"),
64 output: []byte("# pint ignore/next-line\n "),
65 },
66 {
67 input: []byte("# pint ignore/next-line\nfoo\n\n"),
68 output: []byte("# pint ignore/next-line\n \n\n"),
69 },
70 {
71 input: []byte("# pint ignore/next-line\nfoo\nbar\n"),
72 output: []byte("# pint ignore/next-line\n \nbar\n"),
73 },
74 {
75 input: []byte("# pint ignore/next-line \nfoo\n"),
76 output: []byte("# pint ignore/next-line \n \n"),
77 },
78 {
79 input: []byte("# pint ignore/next-line \nfoo\n"),
80 output: []byte("# pint ignore/next-line \n \n"),
81 },
82 {
83 input: []byte("# pint ignore/next-line \nfoo\n"),
84 output: []byte("# pint ignore/next-line \n \n"),
85 },
86 {
87 input: []byte("# pintignore/next-line\nfoo\n"),
88 output: []byte("# pintignore/next-line\nfoo\n"),
89 },
90 {
91 input: []byte("# pint ignore/next-linex\nfoo\n"),
92 output: []byte("# pint ignore/next-linex\nfoo\n"),
93 },
94 {
95 input: []byte("# pint ignore/begin\nfoo\nbar\n"),
96 output: []byte("# pint ignore/begin\n \n \n"),
97 },
98 {
99 input: []byte("prefix # pint ignore/begin\nfoo\nbar\n"),
100 output: []byte("prefix # pint ignore/begin\n \n \n"),
101 },
102 {
103 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/begin"),
104 output: []byte("# pint ignore/begin\n \n \n# pint ignore/begin"),
105 },
106 {
107 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/begin\nfoo\n"),
108 output: []byte("# pint ignore/begin\n \n \n# pint ignore/begin\n \n"),
109 },
110 {
111 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/end\nfoo\n"),
112 output: []byte("# pint ignore/begin\n \n \n# pint ignore/end\nfoo\n"),
113 },
114 {
115 input: []byte("# pint ignore/begin\nfoo # pint ignore/line\nbar\n# pint ignore/begin"),
116 output: []byte("# pint ignore/begin\n # pint ignore/line\n \n# pint ignore/begin"),
117 },
118 {
119 input: []byte("line1\nline2 # pint ignore/line\n"),
120 output: []byte("line1\n # pint ignore/line\n"),
121 },
122 {
123 input: []byte("line1\nline2 # pint ignore/line\nline3\n"),
124 output: []byte("line1\n # pint ignore/line\nline3\n"),
125 },
126 {
127 input: []byte("{#- comment #} # pint ignore/line\n"),
128 output: []byte(" # pint ignore/line\n"),
129 },
130 {
131 input: []byte("# pint ignore/file\nfoo\nbar\n# pint ignore/begin\nfoo\n# pint ignore/end\n"),
132 output: []byte("# pint ignore/file\n \n \n# pint ignore/begin\n \n# pint ignore/end\n"),
133 ignored: true,
134 },
135 {
136 input: []byte("foo\n# pint ignore/file\nfoo\nbar\n# pint ignore/begin\nfoo\n# pint ignore/end\n"),
137 output: []byte("foo\n# pint ignore/file\n \n \n# pint ignore/begin\n \n# pint ignore/end\n"),
138 ignored: true,
139 },
140 {
141 input: []byte(" {% raw %} # pint ignore/line\n"),
142 output: []byte(" # pint ignore/line\n"),
143 },
144 {
145 input: []byte("{# comment #} # pint ignore/line\n"),
146 output: []byte(" # pint ignore/line\n"),
147 },
148 {
149 input: []byte("# pint file/owner bob\n# pint rule/set xxx\n# pint bamboozle xxx\n"),
150 output: []byte("# pint file/owner bob\n# pint rule/set xxx\n# pint bamboozle xxx\n"),
151 comments: []comments.Comment{
152 {
153 Type: comments.FileOwnerType,
154 Value: comments.Owner{Name: "bob"},
155 },
156 },
157 },
158 {
159 input: []byte("{#- hide this comment -#} # pint ignore/line\n"),
160 output: []byte(" # pint ignore/line\n"),
161 },
162 }
163
164 cmpErrorText := cmp.Comparer(func(x, y interface{}) bool {
165 xe := x.(error)
166 ye := y.(error)
167 return xe.Error() == ye.Error()
168 })
169 sameErrorText := cmp.FilterValues(func(x, y interface{}) bool {
170 _, xe := x.(error)
171 _, ye := y.(error)
172 return xe && ye
173 }, cmpErrorText)
174
175 for i, tc := range testCases {
176 t.Run(strconv.Itoa(i+1), func(t *testing.T) {
177 r := bytes.NewReader(tc.input)
178 output, comments, err := parser.ReadContent(r)
179
180 hadError := err != nil
181 if hadError != tc.shouldError {
182 t.Errorf("ReadContent() returned err=%v, expected=%v", err, tc.shouldError)
183 return
184 }
185
186 outputLines := strings.Count(string(output.Body), "\n")
187 inputLines := strings.Count(string(tc.input), "\n")
188 if outputLines != inputLines {
189 t.Errorf("ReadContent() returned %d line(s) while input had %d", outputLines, inputLines)
190 return
191 }
192
193 if diff := cmp.Diff(tc.comments, comments, sameErrorText); diff != "" {
194 t.Errorf("ReadContent() returned wrong comments (-want +got):\n%s", diff)
195 return
196 }
197
198 require.Equal(t, string(tc.output), string(output.Body), "ReadContent() returned wrong output")
199 require.Equal(t, tc.ignored, output.Ignored, "ReadContent() returned wrong Ignored value")
200 })
201 }
202}
203