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Add test for reading long lines

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Change-Id: Ib24518c681f1ffc93192a985cd573fa37006d1f8
This commit is contained in:
Johan Walles 2019-11-19 16:53:17 +01:00
parent d5a0b7df63
commit 9a2ab6df98
1 changed files with 28 additions and 0 deletions
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28
m/reader_test.go
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@ -3,6 +3,7 @@ package m
import (
"io/ioutil"
"math"
"os"
"os/exec"
"path"
"runtime"
@ -142,6 +143,33 @@ func TestGetLines(t *testing.T) {
}
}
func TestGetLongLine(t *testing.T) {
file := "../sample-files/very-long-line.txt"
reader, err := NewReaderFromFilename(file)
if err != nil {
panic(err)
}
if err := reader._Wait(); err != nil {
panic(err)
}
lines := reader.GetLines(1, 5)
assert.Equal(t, lines.firstLineOneBased, 1)
assert.Equal(t, len(lines.lines), 1)
stat, err := os.Stat(file)
if err != nil {
panic(err)
}
fileSize := stat.Size()
line := lines.lines[0]
assert.Equal(t, len(line), fileSize)
assert.Assert(t, strings.HasPrefix(line, "1 2 3 4"))
assert.Assert(t, strings.HasSuffix(line, "0123456789"))
}
func _GetReaderWithLineCount(totalLines int) *Reader {
reader := NewReaderFromStream(strings.NewReader(strings.Repeat("x\n", totalLines)), nil)
if err := reader._Wait(); err != nil {