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-rw-r--r--src/test/bip32_tests.cpp18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/bip32_tests.cpp b/src/test/bip32_tests.cpp
index 64cc924239..75b29ae0aa 100644
--- a/src/test/bip32_tests.cpp
+++ b/src/test/bip32_tests.cpp
@@ -184,4 +184,22 @@ BOOST_AUTO_TEST_CASE(bip32_test5) {
}
}
+BOOST_AUTO_TEST_CASE(bip32_max_depth) {
+ CExtKey key_parent{DecodeExtKey(test1.vDerive[0].prv)}, key_child;
+ CExtPubKey pubkey_parent{DecodeExtPubKey(test1.vDerive[0].pub)}, pubkey_child;
+
+ // We can derive up to the 255th depth..
+ for (auto i = 0; i++ < 255;) {
+ BOOST_CHECK(key_parent.Derive(key_child, 0));
+ std::swap(key_parent, key_child);
+ BOOST_CHECK(pubkey_parent.Derive(pubkey_child, 0));
+ std::swap(pubkey_parent, pubkey_child);
+ }
+
+ // But trying to derive a non-existent 256th depth will fail!
+ BOOST_CHECK(key_parent.nDepth == 255 && pubkey_parent.nDepth == 255);
+ BOOST_CHECK(!key_parent.Derive(key_child, 0));
+ BOOST_CHECK(!pubkey_parent.Derive(pubkey_child, 0));
+}
+
BOOST_AUTO_TEST_SUITE_END()