1 package ff_test
2
3 import (
4 "io"
5 "testing"
6 "time"
7
8 "github.com/peterbourgon/ff/v3"
9 "github.com/peterbourgon/ff/v3/fftest"
10 )
11
12 func TestJSONParser(t *testing.T) {
13 t.Parallel()
14
15 for _, testcase := range []struct {
16 name string
17 args []string
18 file string
19 want fftest.Vars
20 }{
21 {
22 name: "empty input",
23 args: []string{},
24 file: "testdata/empty.json",
25 want: fftest.Vars{},
26 },
27 {
28 name: "basic KV pairs",
29 args: []string{},
30 file: "testdata/basic.json",
31 want: fftest.Vars{S: "s", I: 10, B: true, D: 5 * time.Second},
32 },
33 {
34 name: "value arrays",
35 args: []string{},
36 file: "testdata/value_arrays.json",
37 want: fftest.Vars{S: "bb", I: 12, B: true, D: 5 * time.Second, X: []string{"a", "B", "👍"}},
38 },
39 {
40 name: "bad JSON file",
41 args: []string{},
42 file: "testdata/bad.json",
43 want: fftest.Vars{WantParseErrorIs: io.ErrUnexpectedEOF},
44 },
45 } {
46 t.Run(testcase.name, func(t *testing.T) {
47 fs, vars := fftest.Pair()
48 vars.ParseError = ff.Parse(fs, testcase.args,
49 ff.WithConfigFile(testcase.file),
50 ff.WithConfigFileParser(ff.JSONParser),
51 )
52 fftest.Compare(t, &testcase.want, vars)
53 })
54 }
55 }
56
View as plain text