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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
11 "github.com/cloudflare/pint/internal/parser"
12)
13
14func TestReadContent(t *testing.T) {
15 type testCaseT struct {
16 input []byte
17 output []byte
18 shouldError bool
19 }
20
21 testCases := []testCaseT{
22 {
23 input: []byte(""),
24 output: []byte(""),
25 },
26 {
27 input: []byte("\n"),
28 output: []byte("\n"),
29 },
30 {
31 input: []byte("\n \n"),
32 output: []byte("\n \n"),
33 },
34 {
35 input: []byte("foo bar"),
36 output: []byte("foo bar"),
37 },
38 {
39 input: []byte("foo bar\n"),
40 output: []byte("foo bar\n"),
41 },
42 {
43 input: []byte("line1\nline2"),
44 output: []byte("line1\nline2"),
45 },
46 {
47 input: []byte("line1\nline2\n"),
48 output: []byte("line1\nline2\n"),
49 },
50 {
51 input: []byte("line1\n\nline2\n\n"),
52 output: []byte("line1\n\nline2\n\n"),
53 },
54 {
55 input: []byte("# pint ignore/next-line\nfoo\n"),
56 output: []byte("# pint ignore/next-line\n \n"),
57 },
58 {
59 input: []byte("# pint ignore/next-line\nfoo"),
60 output: []byte("# pint ignore/next-line\n "),
61 },
62 {
63 input: []byte("# pint ignore/next-line\nfoo\n\n"),
64 output: []byte("# pint ignore/next-line\n \n\n"),
65 },
66 {
67 input: []byte("# pint ignore/next-line\nfoo\nbar\n"),
68 output: []byte("# pint ignore/next-line\n \nbar\n"),
69 },
70 {
71 input: []byte("# pint ignore/next-line \nfoo\n"),
72 output: []byte("# pint ignore/next-line \n \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("#pintignore/next-line\nfoo\n"),
84 output: []byte("#pintignore/next-line\nfoo\n"),
85 },
86 {
87 input: []byte("# pint ignore/next-linex\nfoo\n"),
88 output: []byte("# pint ignore/next-linex\nfoo\n"),
89 },
90 {
91 input: []byte("# pint ignore/begin\nfoo\nbar\n"),
92 output: []byte("# pint ignore/begin\n \n \n"),
93 },
94 {
95 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/begin"),
96 output: []byte("# pint ignore/begin\n \n \n# pint ignore/begin"),
97 },
98 {
99 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/begin\nfoo\n"),
100 output: []byte("# pint ignore/begin\n \n \n# pint ignore/begin\n \n"),
101 },
102 {
103 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/end\nfoo\n"),
104 output: []byte("# pint ignore/begin\n \n \n# pint ignore/end\nfoo\n"),
105 },
106 {
107 input: []byte("# pint ignore/begin\nfoo # pint ignore/line\nbar\n# pint ignore/begin"),
108 output: []byte("# pint ignore/begin\n # pint ignore/line\n \n# pint ignore/begin"),
109 },
110 {
111 input: []byte("line1\nline2 # pint ignore/line\n"),
112 output: []byte("line1\n # pint ignore/line\n"),
113 },
114 {
115 input: []byte("line1\nline2 # pint ignore/line\nline3\n"),
116 output: []byte("line1\n # pint ignore/line\nline3\n"),
117 },
118 {
119 input: []byte("{#- comment #} # pint ignore/line\n"),
120 output: []byte(" #- comment #} # pint ignore/line\n"),
121 },
122 {
123 input: []byte("# pint ignore/file\nfoo\nbar\n# pint ignore/begin\nfoo\n# pint ignore/end\n"),
124 output: []byte("# pint ignore/file\n \n \n# pint ignore/begin\n \n# pint ignore/end\n"),
125 },
126 {
127 input: []byte("foo\n# pint ignore/file\nfoo\nbar\n# pint ignore/begin\nfoo\n# pint ignore/end\n"),
128 output: []byte("foo\n# pint ignore/file\n \n \n# pint ignore/begin\n \n# pint ignore/end\n"),
129 },
130 }
131
132 for i, tc := range testCases {
133 t.Run(strconv.Itoa(i+1), func(t *testing.T) {
134 r := bytes.NewReader(tc.input)
135 output, err := parser.ReadContent(r)
136
137 hadError := err != nil
138 if hadError != tc.shouldError {
139 t.Errorf("ReadContent() returned err=%v, expected=%v", err, tc.shouldError)
140 return
141 }
142
143 outputLines := strings.Count(string(output), "\n")
144 inputLines := strings.Count(string(tc.input), "\n")
145 if outputLines != inputLines {
146 t.Errorf("ReadContent() returned %d line(s) while input had %d", outputLines, inputLines)
147 return
148 }
149
150 if diff := cmp.Diff(string(tc.output), string(output)); diff != "" {
151 t.Errorf("ReadContent() returned wrong output (-want +got):\n%s", diff)
152 return
153 }
154 })
155 }
156}
157