Major refactoring to lower memory consumption.

Package has been split into multiple structure loaded on demand: files, extra, depends.

They're saved and loaded completely separately.

debian/package_files_test.go

@@ -0,0 +1,61 @@
+package debian
+
+import (
+	"github.com/smira/aptly/files"
+	"github.com/smira/aptly/utils"
+	. "launchpad.net/gocheck"
+	"os"
+	"path/filepath"
+)
+
+type PackageFilesSuite struct {
+	files PackageFiles
+}
+
+var _ = Suite(&PackageFilesSuite{})
+
+func (s *PackageFilesSuite) SetUpTest(c *C) {
+	s.files = PackageFiles{PackageFile{
+		Filename:     "alien-arena-common_7.40-2_i386.deb",
+		downloadPath: "pool/contrib/a/alien-arena",
+		Checksums: utils.ChecksumInfo{
+			Size:   187518,
+			MD5:    "1e8cba92c41420aa7baa8a5718d67122",
+			SHA1:   "46955e48cad27410a83740a21d766ce362364024",
+			SHA256: "eb4afb9885cba6dc70cccd05b910b2dbccc02c5900578be5e99f0d3dbf9d76a5",
+		}}}
+}
+
+func (s *PackageFilesSuite) TestVerify(c *C) {
+	packagePool := files.NewPackagePool(c.MkDir())
+	poolPath, _ := packagePool.Path(s.files[0].Filename, s.files[0].Checksums.MD5)
+
+	result, err := s.files[0].Verify(packagePool)
+	c.Check(err, IsNil)
+	c.Check(result, Equals, false)
+
+	err = os.MkdirAll(filepath.Dir(poolPath), 0755)
+	c.Assert(err, IsNil)
+
+	file, err := os.Create(poolPath)
+	c.Assert(err, IsNil)
+	file.WriteString("abcde")
+	file.Close()
+
+	result, err = s.files[0].Verify(packagePool)
+	c.Check(err, IsNil)
+	c.Check(result, Equals, false)
+
+	s.files[0].Checksums.Size = 5
+	result, err = s.files[0].Verify(packagePool)
+	c.Check(err, IsNil)
+	c.Check(result, Equals, true)
+}
+
+func (s *PackageFilesSuite) TestDownloadURL(c *C) {
+	c.Check(s.files[0].DownloadURL(), Equals, "pool/contrib/a/alien-arena/alien-arena-common_7.40-2_i386.deb")
+}
+
+func (s *PackageFilesSuite) TestHash(c *C) {
+	c.Check(s.files.Hash(), Equals, uint64(0xc8901eedd79ac51b))
+}