From 2dfa4bcf6cb5263b8509722ffd14ddd02eddf47a Mon Sep 17 00:00:00 2001
From: Darioush Jalali <darioush.jalali@avalabs.org>
Date: Fri, 21 Jan 2022 07:35:30 -0600
Subject: [PATCH] trie: test for edgecase in VerifyRangeProof (#24257)

* trie/proof: edge case for VerifyRangeProof

* more consistency with other tests in the file

* trie: fix test todo

Co-authored-by: Martin Holst Swende <martin@swende.se>
---
 trie/proof_test.go | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/trie/proof_test.go b/trie/proof_test.go
index 95ad6169c..29866714c 100644
--- a/trie/proof_test.go
+++ b/trie/proof_test.go
@@ -1067,3 +1067,36 @@ func nonRandomTrie(n int) (*Trie, map[string]*kv) {
 	}
 	return trie, vals
 }
+
+func TestRangeProofKeysWithSharedPrefix(t *testing.T) {
+	keys := [][]byte{
+		common.Hex2Bytes("aa10000000000000000000000000000000000000000000000000000000000000"),
+		common.Hex2Bytes("aa20000000000000000000000000000000000000000000000000000000000000"),
+	}
+	vals := [][]byte{
+		common.Hex2Bytes("02"),
+		common.Hex2Bytes("03"),
+	}
+	trie := new(Trie)
+	for i, key := range keys {
+		trie.Update(key, vals[i])
+	}
+	root := trie.Hash()
+	proof := memorydb.New()
+	start := common.Hex2Bytes("0000000000000000000000000000000000000000000000000000000000000000")
+	end := common.Hex2Bytes("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
+	if err := trie.Prove(start, 0, proof); err != nil {
+		t.Fatalf("failed to prove start: %v", err)
+	}
+	if err := trie.Prove(end, 0, proof); err != nil {
+		t.Fatalf("failed to prove end: %v", err)
+	}
+
+	more, err := VerifyRangeProof(root, start, end, keys, vals, proof)
+	if err != nil {
+		t.Fatalf("failed to verify range proof: %v", err)
+	}
+	if more != false {
+		t.Error("expected more to be false")
+	}
+}