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package cache
import (
"fmt"
"io"
"sync"
"testing"
"gopkg.in/src-d/go-git.v4/plumbing"
. "gopkg.in/check.v1"
)
func Test(t *testing.T) { TestingT(t) }
type ObjectSuite struct {
c Object
aObject plumbing.EncodedObject
bObject plumbing.EncodedObject
cObject plumbing.EncodedObject
dObject plumbing.EncodedObject
}
var _ = Suite(&ObjectSuite{})
func (s *ObjectSuite) SetUpTest(c *C) {
s.aObject = newObject("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 1*Byte)
s.bObject = newObject("bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb", 3*Byte)
s.cObject = newObject("cccccccccccccccccccccccccccccccccccccccc", 1*Byte)
s.dObject = newObject("dddddddddddddddddddddddddddddddddddddddd", 1*Byte)
s.c = NewObjectLRU(2 * Byte)
}
func (s *ObjectSuite) TestPutSameObject(c *C) {
s.c.Put(s.aObject)
s.c.Put(s.aObject)
_, ok := s.c.Get(s.aObject.Hash())
c.Assert(ok, Equals, true)
}
func (s *ObjectSuite) TestPutBigObject(c *C) {
s.c.Put(s.bObject)
_, ok := s.c.Get(s.aObject.Hash())
c.Assert(ok, Equals, false)
}
func (s *ObjectSuite) TestPutCacheOverflow(c *C) {
s.c.Put(s.aObject)
s.c.Put(s.cObject)
s.c.Put(s.dObject)
obj, ok := s.c.Get(s.aObject.Hash())
c.Assert(ok, Equals, false)
c.Assert(obj, IsNil)
obj, ok = s.c.Get(s.cObject.Hash())
c.Assert(ok, Equals, true)
c.Assert(obj, NotNil)
obj, ok = s.c.Get(s.dObject.Hash())
c.Assert(ok, Equals, true)
c.Assert(obj, NotNil)
}
func (s *ObjectSuite) TestClear(c *C) {
s.c.Put(s.aObject)
s.c.Clear()
obj, ok := s.c.Get(s.aObject.Hash())
c.Assert(ok, Equals, false)
c.Assert(obj, IsNil)
}
func (s *ObjectSuite) TestConcurrentAccess(c *C) {
var wg sync.WaitGroup
for i := 0; i < 1000; i++ {
wg.Add(3)
go func(i int) {
s.c.Put(newObject(fmt.Sprint(i), FileSize(i)))
wg.Done()
}(i)
go func(i int) {
if i%30 == 0 {
s.c.Clear()
}
wg.Done()
}(i)
go func(i int) {
s.c.Get(plumbing.NewHash(fmt.Sprint(i)))
wg.Done()
}(i)
}
wg.Wait()
}
type dummyObject struct {
hash plumbing.Hash
size FileSize
}
func newObject(hash string, size FileSize) plumbing.EncodedObject {
return &dummyObject{
hash: plumbing.NewHash(hash),
size: size,
}
}
func (d *dummyObject) Hash() plumbing.Hash { return d.hash }
func (*dummyObject) Type() plumbing.ObjectType { return plumbing.InvalidObject }
func (*dummyObject) SetType(plumbing.ObjectType) {}
func (d *dummyObject) Size() int64 { return int64(d.size) }
func (*dummyObject) SetSize(s int64) {}
func (*dummyObject) Reader() (io.ReadCloser, error) { return nil, nil }
func (*dummyObject) Writer() (io.WriteCloser, error) { return nil, nil }
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