From b462a7f94680802d8db43651bd1c087392e1b92a Mon Sep 17 00:00:00 2001
From: FabijanC <fabijan.corak@gmail.com>
Date: Thu, 4 Nov 2021 15:20:27 +0100
Subject: [PATCH] Fix empty array behavior and release a new patch version
 (v0.1.4) (#7)

* Fix behavior for passing empty arrays

* Bump version to v0.1.4
---
 pyproject.toml              |  2 +-
 starknet_devnet/__init__.py |  2 +-
 starknet_devnet/server.py   | 12 +++++++++---
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/pyproject.toml b/pyproject.toml
index 7a6a67a36..a1b3642ac 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "starknet_devnet"
-version = "0.1.3"
+version = "0.1.4"
 description = "A local testnet for Starknet"
 authors = ["FabijanC <fabijan.corak@gmail.com>"]
 license = "ISC"
diff --git a/starknet_devnet/__init__.py b/starknet_devnet/__init__.py
index ae7362549..bbab0242f 100644
--- a/starknet_devnet/__init__.py
+++ b/starknet_devnet/__init__.py
@@ -1 +1 @@
-__version__ = "0.1.3"
+__version__ = "0.1.4"
diff --git a/starknet_devnet/server.py b/starknet_devnet/server.py
index 0b3863694..d329428d8 100644
--- a/starknet_devnet/server.py
+++ b/starknet_devnet/server.py
@@ -97,7 +97,13 @@ def adapt_calldata(calldata, expected_inputs, types):
         input_name = input_entry["name"]
         input_type = input_entry["type"]
         if calldata_i >= len(calldata):
-            abort(Response(f"Too few function arguments provided: {len(calldata)}.", 400))
+            if input_type == "felt*" and last_name == f"{input_name}_len" and last_value == 0:
+                # This means that an empty array is provided.
+                # Last element was array length (0), it's replaced with the array itself
+                adapted_calldata[-1] = []
+                continue
+            else:
+                abort(Response(f"Too few function arguments provided: {len(calldata)}.", 400))
         input_value = calldata[calldata_i]
 
         if input_type == "felt*":
@@ -109,8 +115,8 @@ def adapt_calldata(calldata, expected_inputs, types):
             if len(arr) < arr_length:
                 abort(Response(f"Too few function arguments provided: {len(calldata)}.", 400))
 
-            adapted_calldata.pop() # last element was length, it's not needed
-            adapted_calldata.append(arr)
+            # last element was array length, it's replaced with the array itself
+            adapted_calldata[-1] = arr
             calldata_i += arr_length
 
         elif input_type == "felt":