hybridgroup.gobot/sysfs/fs_mock_test.go

65 lines
1.4 KiB
Go

package sysfs
import (
"testing"
"github.com/hybridgroup/gobot/gobottest"
)
func TestMockFilesystemOpen(t *testing.T) {
fs := NewMockFilesystem([]string{"foo"})
f1 := fs.Files["foo"]
gobottest.Assert(t, f1.Opened, false)
f2, err := fs.OpenFile("foo", 0, 0666)
gobottest.Assert(t, f1, f2)
gobottest.Assert(t, err, nil)
err = f2.Sync()
gobottest.Assert(t, err, nil)
_, err = fs.OpenFile("bar", 0, 0666)
gobottest.Refute(t, err, nil)
fs.Add("bar")
f4, err := fs.OpenFile("bar", 0, 0666)
gobottest.Refute(t, f4.Fd(), f1.Fd())
}
func TestMockFilesystemWrite(t *testing.T) {
fs := NewMockFilesystem([]string{"bar"})
f1 := fs.Files["bar"]
f2, err := fs.OpenFile("bar", 0, 0666)
gobottest.Assert(t, err, nil)
// Never been read or written.
gobottest.Assert(t, f1.Seq <= 0, true)
f2.WriteString("testing")
// Was written.
gobottest.Assert(t, f1.Seq > 0, true)
gobottest.Assert(t, f1.Contents, "testing")
}
func TestMockFilesystemRead(t *testing.T) {
fs := NewMockFilesystem([]string{"bar"})
f1 := fs.Files["bar"]
f1.Contents = "Yip"
f2, err := fs.OpenFile("bar", 0, 0666)
gobottest.Assert(t, err, nil)
// Never been read or written.
gobottest.Assert(t, f1.Seq <= 0, true)
buffer := make([]byte, 20)
n, err := f2.Read(buffer)
// Was read.
gobottest.Assert(t, f1.Seq > 0, true)
gobottest.Assert(t, n, 3)
gobottest.Assert(t, string(buffer[:3]), "Yip")
n, err = f2.ReadAt(buffer, 10)
gobottest.Assert(t, n, 3)
}