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fix: use correct hashes for empty files (#4620)

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Signed-off-by: Paweł Pałucha <pawel.palucha@chainguard.dev>
This commit is contained in:
Paweł Pałucha
2026-02-24 09:52:29 -05:00
committed by GitHub
parent e9e7e20cc8
commit db76d85d51
4 changed files with 74 additions and 12 deletions
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syft/file/cataloger/filedigest/cataloger_test.go
+3 -8
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@@ -34,12 +34,7 @@ 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[file.NewLocation(f).Coordinates] = []file.Digest{}
continue
}
// Calculate digests for all files, including empty files
for _, hash := range hashes {
h := hash.New()
h.Write(b)
@@ -65,13 +60,13 @@ func TestDigestsCataloger(t *testing.T) {
name: "md5",
digests: []crypto.Hash{crypto.MD5},
files: []string{"test-fixtures/last/empty/empty", "test-fixtures/last/path.txt"},
expected: testDigests(t, "test-fixtures/last", []string{"path.txt"}, crypto.MD5),
expected: testDigests(t, "test-fixtures/last", []string{"empty/empty", "path.txt"}, crypto.MD5),
},
{
name: "md5-sha1-sha256",
digests: []crypto.Hash{crypto.MD5, crypto.SHA1, crypto.SHA256},
files: []string{"test-fixtures/last/empty/empty", "test-fixtures/last/path.txt"},
expected: testDigests(t, "test-fixtures/last", []string{"path.txt"}, crypto.MD5, crypto.SHA1, crypto.SHA256),
expected: testDigests(t, "test-fixtures/last", []string{"empty/empty", "path.txt"}, crypto.MD5, crypto.SHA1, crypto.SHA256),
},
}