feat: implement part of metasnap api

distro/debian/snapshot/metasnap/metasnap_test.go

@@ -0,0 +1,28 @@
+package metasnap
+
+import (
+	"testing"
+
+	"github.com/davecgh/go-spew/spew"
+)
+
+func TestGetPackageInfo(t *testing.T) {
+	// existing
+	infos, err := GetPackageInfo("linux-image-3.8-trunk-amd64",
+		"amd64", "3.8.2-1~experimental.1")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log(spew.Sdump(infos))
+
+	// non-existing
+	infos, err = GetPackageInfo("meh", "amd64", "meh")
+	if err == nil {
+		t.Fatalf("should not be ok, result: %s", spew.Sdump(infos))
+	}
+
+	if err != ErrNotFound {
+		t.Fatal("wrong error type")
+	}
+}