b/gigaparsec
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Test Slice with a failing reader

Browse Source
This commit is contained in:
Brandon Dyck
2024-09-13 10:38:47 -06:00
parent b040fd21c3
commit 0a149acf46
3 changed files with 29 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
parser_test.go
View File

@ -2,10 +2,12 @@ package gigaparsec_test
import (
"bytes"
"errors"
"testing"
"git.codemonkeysoftware.net/b/gigaparsec"
"git.codemonkeysoftware.net/b/gigaparsec/cursor"
ptest "git.codemonkeysoftware.net/b/gigaparsec/test"
"github.com/shoenig/test"
"github.com/shoenig/test/must"
"pgregory.net/rapid"
@ -49,7 +51,14 @@ func TestSlice(t *testing.T) {
input := s[:inputLen]
assertParseFails(t, input, gigaparsec.Slice(s))
}))
t.Run("fails when read fails", Todo)
t.Run("fails when read fails", rapid.MakeCheck(func(t *rapid.T) {
expectedErr := rapid.Map(rapid.StringN(0, 100, -1), errors.New).Draw(t, "err")
r := ptest.ErrReaderAt(expectedErr)
c := cursor.NewReaderAt(r)
s := rapid.SliceOfN(rapid.Byte(), 0, 100).Draw(t, "s")
_, err := gigaparsec.Slice(s)(gigaparsec.MakeState(c))
test.ErrorIs(t, err, expectedErr)
}))
t.Run("succeeds when contents match", rapid.MakeCheck(func(t *rapid.T) {
input := rapid.SliceOfN(rapid.Byte(), 1, -1).Draw(t, "input")
sLen := rapid.IntRange(0, len(input)).Draw(t, "sLen")