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package packfile
import (
"strconv"
"strings"
"testing"
"gopkg.in/src-d/go-git.v4/plumbing"
. "gopkg.in/check.v1"
)
type IndexSuite struct{}
var _ = Suite(&IndexSuite{})
func (s *IndexSuite) TestLookupOffset(c *C) {
idx := NewIndex(0)
for o1 := 0; o1 < 10000; o1 += 100 {
for o2 := 0; o2 < 10000; o2 += 100 {
if o2 >= o1 {
e, ok := idx.LookupOffset(uint64(o2))
c.Assert(ok, Equals, false)
c.Assert(e, IsNil)
} else {
e, ok := idx.LookupOffset(uint64(o2))
c.Assert(ok, Equals, true)
c.Assert(e, NotNil)
c.Assert(e.Hash, Equals, toHash(o2))
c.Assert(e.Offset, Equals, uint64(o2))
}
}
h1 := toHash(o1)
idx.Add(h1, uint64(o1), 0)
for o2 := 0; o2 < 10000; o2 += 100 {
if o2 > o1 {
e, ok := idx.LookupOffset(uint64(o2))
c.Assert(ok, Equals, false)
c.Assert(e, IsNil)
} else {
e, ok := idx.LookupOffset(uint64(o2))
c.Assert(ok, Equals, true)
c.Assert(e, NotNil)
c.Assert(e.Hash, Equals, toHash(o2))
c.Assert(e.Offset, Equals, uint64(o2))
}
}
}
}
func (s *IndexSuite) TestLookupHash(c *C) {
idx := NewIndex(0)
for o1 := 0; o1 < 10000; o1 += 100 {
for o2 := 0; o2 < 10000; o2 += 100 {
if o2 >= o1 {
e, ok := idx.LookupHash(toHash(o2))
c.Assert(ok, Equals, false)
c.Assert(e, IsNil)
} else {
e, ok := idx.LookupHash(toHash(o2))
c.Assert(ok, Equals, true)
c.Assert(e, NotNil)
c.Assert(e.Hash, Equals, toHash(o2))
c.Assert(e.Offset, Equals, uint64(o2))
}
}
h1 := toHash(o1)
idx.Add(h1, uint64(o1), 0)
for o2 := 0; o2 < 10000; o2 += 100 {
if o2 > o1 {
e, ok := idx.LookupHash(toHash(o2))
c.Assert(ok, Equals, false)
c.Assert(e, IsNil)
} else {
e, ok := idx.LookupHash(toHash(o2))
c.Assert(ok, Equals, true)
c.Assert(e, NotNil)
c.Assert(e.Hash, Equals, toHash(o2))
c.Assert(e.Offset, Equals, uint64(o2))
}
}
}
}
func (s *IndexSuite) TestSize(c *C) {
idx := NewIndex(0)
for o1 := 0; o1 < 1000; o1++ {
c.Assert(idx.Size(), Equals, o1)
h1 := toHash(o1)
idx.Add(h1, uint64(o1), 0)
}
}
func (s *IndexSuite) TestIdxFileEmpty(c *C) {
idx := NewIndex(0)
idxf := idx.ToIdxFile()
idx2 := NewIndexFromIdxFile(idxf)
c.Assert(idx, DeepEquals, idx2)
}
func (s *IndexSuite) TestIdxFile(c *C) {
idx := NewIndex(0)
for o1 := 0; o1 < 1000; o1++ {
h1 := toHash(o1)
idx.Add(h1, uint64(o1), 0)
}
idx2 := NewIndexFromIdxFile(idx.ToIdxFile())
c.Assert(idx, DeepEquals, idx2)
}
func toHash(i int) plumbing.Hash {
is := strconv.Itoa(i)
padding := strings.Repeat("a", 40-len(is))
return plumbing.NewHash(padding + is)
}
func BenchmarkIndexConstruction(b *testing.B) {
b.ReportAllocs()
idx := NewIndex(0)
for o := 0; o < 1e6*b.N; o += 100 {
h1 := toHash(o)
idx.Add(h1, uint64(o), 0)
}
}
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