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package memfs
import (
"fmt"
"io"
"os"
"testing"
"github.com/go-git/go-billy/v5"
"github.com/go-git/go-billy/v5/test"
"github.com/go-git/go-billy/v5/util"
. "gopkg.in/check.v1"
)
func Test(t *testing.T) { TestingT(t) }
type MemorySuite struct {
test.FilesystemSuite
path string
}
var _ = Suite(&MemorySuite{})
func (s *MemorySuite) SetUpTest(c *C) {
s.FilesystemSuite = test.NewFilesystemSuite(New())
}
func (s *MemorySuite) TestCapabilities(c *C) {
_, ok := s.FS.(billy.Capable)
c.Assert(ok, Equals, true)
caps := billy.Capabilities(s.FS)
c.Assert(caps, Equals, billy.DefaultCapabilities&^billy.LockCapability)
}
func (s *MemorySuite) TestNegativeOffsets(c *C) {
f, err := s.FS.Create("negative")
c.Assert(err, IsNil)
buf := make([]byte, 100)
_, err = f.ReadAt(buf, -100)
c.Assert(err, ErrorMatches, "readat negative: negative offset")
_, err = f.Seek(-100, io.SeekCurrent)
c.Assert(err, IsNil)
_, err = f.Write(buf)
c.Assert(err, ErrorMatches, "writeat negative: negative offset")
}
func (s *MemorySuite) TestExclusive(c *C) {
f, err := s.FS.OpenFile("exclusive", os.O_CREATE|os.O_EXCL|os.O_RDWR, 0666)
c.Assert(err, IsNil)
fmt.Fprint(f, "mememememe")
err = f.Close()
c.Assert(err, IsNil)
_, err = s.FS.OpenFile("exclusive", os.O_CREATE|os.O_EXCL|os.O_RDWR, 0666)
c.Assert(err, ErrorMatches, os.ErrExist.Error())
}
func (s *MemorySuite) TestOrder(c *C) {
var err error
files := []string{
"a",
"b",
"c",
}
for _, f := range files {
_, err = s.FS.Create(f)
c.Assert(err, IsNil)
}
attempts := 30
for n := 0; n < attempts; n++ {
actual, err := s.FS.ReadDir("")
c.Assert(err, IsNil)
for i, f := range files {
c.Assert(actual[i].Name(), Equals, f)
}
}
}
func (s *MemorySuite) TestTruncateAppend(c *C) {
err := util.WriteFile(s.FS, "truncate_append", []byte("file-content"), 0666)
c.Assert(err, IsNil)
f, err := s.FS.OpenFile("truncate_append", os.O_WRONLY|os.O_TRUNC|os.O_APPEND, 0666)
c.Assert(err, IsNil)
n, err := f.Write([]byte("replace"))
c.Assert(err, IsNil)
c.Assert(n, Equals, len("replace"))
err = f.Close()
c.Assert(err, IsNil)
data, err := util.ReadFile(s.FS, "truncate_append")
c.Assert(err, IsNil)
c.Assert(string(data), Equals, "replace")
}
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