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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/cloudflare/pint/internal/parser"
10 "github.com/google/go-cmp/cmp"
11)
12
13func TestReadContent(t *testing.T) {
14 type testCaseT struct {
15 input []byte
16 output []byte
17 shouldError bool
18 }
19
20 testCases := []testCaseT{
21 {
22 input: []byte(""),
23 output: []byte(""),
24 },
25 {
26 input: []byte("\n"),
27 output: []byte("\n"),
28 },
29 {
30 input: []byte("\n \n"),
31 output: []byte("\n \n"),
32 },
33 {
34 input: []byte("foo bar"),
35 output: []byte("foo bar"),
36 },
37 {
38 input: []byte("foo bar\n"),
39 output: []byte("foo bar\n"),
40 },
41 {
42 input: []byte("line1\nline2"),
43 output: []byte("line1\nline2"),
44 },
45 {
46 input: []byte("line1\nline2\n"),
47 output: []byte("line1\nline2\n"),
48 },
49 {
50 input: []byte("line1\n\nline2\n\n"),
51 output: []byte("line1\n\nline2\n\n"),
52 },
53 {
54 input: []byte("# pint ignore/next-line\nfoo\n"),
55 output: []byte("# pint ignore/next-line\n \n"),
56 },
57 {
58 input: []byte("# pint ignore/next-line\nfoo"),
59 output: []byte("# pint ignore/next-line\n "),
60 },
61 {
62 input: []byte("# pint ignore/next-line\nfoo\n\n"),
63 output: []byte("# pint ignore/next-line\n \n\n"),
64 },
65 {
66 input: []byte("# pint ignore/next-line\nfoo\nbar\n"),
67 output: []byte("# pint ignore/next-line\n \nbar\n"),
68 },
69 {
70 input: []byte("# pint ignore/next-line \nfoo\n"),
71 output: []byte("# pint ignore/next-line \n \n"),
72 },
73 {
74 input: []byte("# pint ignore/next-line \nfoo\n"),
75 output: []byte("# pint ignore/next-line \n \n"),
76 },
77 {
78 input: []byte("#pint ignore/next-line \nfoo\n"),
79 output: []byte("#pint ignore/next-line \n \n"),
80 },
81 {
82 input: []byte("#pintignore/next-line\nfoo\n"),
83 output: []byte("#pintignore/next-line\nfoo\n"),
84 },
85 {
86 input: []byte("# pint ignore/next-linex\nfoo\n"),
87 output: []byte("# pint ignore/next-linex\nfoo\n"),
88 },
89 {
90 input: []byte("# pint ignore/begin\nfoo\nbar\n"),
91 output: []byte("# pint ignore/begin\n \n \n"),
92 },
93 {
94 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/begin"),
95 output: []byte("# pint ignore/begin\n \n \n# pint ignore/begin"),
96 },
97 {
98 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/begin\nfoo\n"),
99 output: []byte("# pint ignore/begin\n \n \n# pint ignore/begin\n \n"),
100 },
101 {
102 input: []byte("# pint ignore/begin\nfoo\nbar\n# pint ignore/end\nfoo\n"),
103 output: []byte("# pint ignore/begin\n \n \n# pint ignore/end\nfoo\n"),
104 },
105 {
106 input: []byte("# pint ignore/begin\nfoo # pint ignore/line\nbar\n# pint ignore/begin"),
107 output: []byte("# pint ignore/begin\n # pint ignore/line\n \n# pint ignore/begin"),
108 },
109 {
110 input: []byte("line1\nline2 # pint ignore/line\n"),
111 output: []byte("line1\n # pint ignore/line\n"),
112 },
113 {
114 input: []byte("line1\nline2 # pint ignore/line\nline3\n"),
115 output: []byte("line1\n # pint ignore/line\nline3\n"),
116 },
117 {
118 input: []byte("{#- comment #} # pint ignore/line\n"),
119 output: []byte(" #- comment #} # pint ignore/line\n"),
120 },
121 {
122 input: []byte("# pint ignore/file\nfoo\nbar\n# pint ignore/begin\nfoo\n# pint ignore/end\n"),
123 output: []byte("# pint ignore/file\n \n \n# pint ignore/begin\n \n# pint ignore/end\n"),
124 },
125 {
126 input: []byte("foo\n# pint ignore/file\nfoo\nbar\n# pint ignore/begin\nfoo\n# pint ignore/end\n"),
127 output: []byte("foo\n# pint ignore/file\n \n \n# pint ignore/begin\n \n# pint ignore/end\n"),
128 },
129 }
130
131 for i, tc := range testCases {
132 t.Run(strconv.Itoa(i+1), func(t *testing.T) {
133 r := bytes.NewReader(tc.input)
134 output, err := parser.ReadContent(r)
135
136 hadError := err != nil
137 if hadError != tc.shouldError {
138 t.Errorf("ReadContent() returned err=%v, expected=%v", err, tc.shouldError)
139 return
140 }
141
142 outputLines := strings.Count(string(output), "\n")
143 inputLines := strings.Count(string(tc.input), "\n")
144 if outputLines != inputLines {
145 t.Errorf("ReadContent() returned %d line(s) while input had %d", outputLines, inputLines)
146 return
147 }
148
149 if diff := cmp.Diff(string(tc.output), string(output)); diff != "" {
150 t.Errorf("ReadContent() returned wrong output (-want +got):\n%s", diff)
151 return
152 }
153 })
154 }
155}
156