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go-zero/core/iox/textfile_test.go

28 lines
397 B
Go

4 years ago
package iox
import (
"io/ioutil"
"os"
"testing"
"github.com/stretchr/testify/assert"
)
func TestCountLines(t *testing.T) {
const val = `1
2
3
4`
file, err := ioutil.TempFile(os.TempDir(), "test-")
if err != nil {
t.Fatal(err)
}
defer os.Remove(file.Name())
file.WriteString(val)
file.Close()
lines, err := CountLines(file.Name())
assert.Nil(t, err)
assert.Equal(t, 4, lines)
}