bug: spdx checksum empty array; allow syft to generate SHA1 for spdx-tag-value documents (#1404)

syft/file/digest_cataloger_test.go

@@ -29,12 +29,6 @@ func testDigests(t testing.TB, root string, files []string, hashes ...crypto.Has
 			t.Fatalf("could not read %q : %+v", f, err)
 		}
 
-		if len(b) == 0 {
-			// we don't keep digests for empty files
-			digests[source.NewLocation(f).Coordinates] = []Digest{}
-			continue
-		}
-
 		for _, hash := range hashes {
 			h := hash.New()
 			h.Write(b)