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Add tests for the eager-header refactor.

This commit is contained in:
Toby Burress 2018-02-22 01:14:04 +00:00
parent 4fd5f0b8a9
commit cdb48a8970
1 changed files with 52 additions and 2 deletions
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54
internal/pack/pack_internal_test.go
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@ -22,8 +22,8 @@ func (rd *countingReaderAt) ReadAt(p []byte, off int64) (n int, err error) {
func TestReadHeaderEagerLoad(t *testing.T) {
testReadHeader := func(dataSize int, entryCount uint, expectedReadInvocationCount int) {
expectedHeader := rtest.Random(0, int(entryCount*entrySize)+crypto.Extension)
testReadHeader := func(dataSize, entryCount, expectedReadInvocationCount int) {
expectedHeader := rtest.Random(0, entryCount*int(entrySize)+crypto.Extension)
buf := &bytes.Buffer{}
buf.Write(rtest.Random(0, dataSize)) // pack blobs data
@ -58,3 +58,53 @@ func TestReadHeaderEagerLoad(t *testing.T) {
testReadHeader(dataSize+3, 1, 1)
testReadHeader(dataSize+4, 1, 1)
}
func TestReadRecords(t *testing.T) {
testReadRecords := func(dataSize, entryCount, totalRecords int) {
totalHeader := rtest.Random(0, totalRecords*int(entrySize)+crypto.Extension)
off := len(totalHeader) - (entryCount*int(entrySize) + crypto.Extension)
if off < 0 {
off = 0
}
expectedHeader := totalHeader[off:]
buf := &bytes.Buffer{}
buf.Write(rtest.Random(0, dataSize)) // pack blobs data
buf.Write(totalHeader) // pack header
binary.Write(buf, binary.LittleEndian, uint32(len(totalHeader))) // pack header length
rd := bytes.NewReader(buf.Bytes())
header, count, err := readRecords(rd, int64(rd.Len()), entryCount)
rtest.OK(t, err)
rtest.Equals(t, expectedHeader, header)
rtest.Equals(t, totalRecords, count)
}
// basic
testReadRecords(100, 1, 1)
testReadRecords(100, 0, 1)
testReadRecords(100, 1, 0)
// header entries ~ eager entries
testReadRecords(100, eagerEntries, eagerEntries-1)
testReadRecords(100, eagerEntries, eagerEntries)
testReadRecords(100, eagerEntries, eagerEntries+1)
// file size == eager header load size
eagerLoadSize := int((eagerEntries * entrySize) + crypto.Extension)
headerSize := int(1*entrySize) + crypto.Extension
dataSize := eagerLoadSize - headerSize - binary.Size(uint32(0))
testReadRecords(dataSize-1, 1, 1)
testReadRecords(dataSize, 1, 1)
testReadRecords(dataSize+1, 1, 1)
testReadRecords(dataSize+2, 1, 1)
testReadRecords(dataSize+3, 1, 1)
testReadRecords(dataSize+4, 1, 1)
for i := 0; i < 2; i++ {
for j := 0; j < 2; j++ {
testReadRecords(dataSize, i, j)
}
}
}