New blind-sign ragger test

tests/ragger/constants.py

@@ -1,3 +1,5 @@
 from pathlib import Path
+import os
 
 ROOT_SNAPSHOT_PATH = Path(__file__).parent
+ABIS_FOLDER = "%s/abis" % (os.path.dirname(__file__))

tests/ragger/test_blind_sign.py

@@ -0,0 +1,55 @@
+import json
+from ragger.backend import BackendInterface
+from ragger.firmware import Firmware
+from ragger.navigator import Navigator, NavInsID
+from ragger.error import ExceptionRAPDU
+from ledger_app_clients.ethereum.client import EthAppClient
+from web3 import Web3
+from constants import ROOT_SNAPSHOT_PATH, ABIS_FOLDER
+
+
+# Token approval, would require loading the "internal plugin" &
+# providing the token metadata from the CAL
+def test_blind_sign(firmware: Firmware,
+                    backend: BackendInterface,
+                    navigator: Navigator):
+    app_client = EthAppClient(backend)
+
+    with open("%s/erc20.json" % (ABIS_FOLDER)) as file:
+        contract = Web3().eth.contract(
+            abi=json.load(file),
+            address=None
+        )
+    data = contract.encodeABI("approve", [
+        # Uniswap Protocol: Permit2
+        bytes.fromhex("000000000022d473030f116ddee9f6b43ac78ba3"),
+        Web3.to_wei("2", "ether")
+    ])
+    tx_params = {
+        "nonce": 235,
+        "maxFeePerGas": Web3.to_wei(100, "gwei"),
+        "maxPriorityFeePerGas": Web3.to_wei(10, "gwei"),
+        "gas": 44001,
+        # Maker: Dai Stablecoin
+        "to": bytes.fromhex("6b175474e89094c44da98b954eedeac495271d0f"),
+        "data": data,
+        "chainId": 1
+    }
+    try:
+        with app_client.sign("m/44'/60'/0'/0/0", tx_params):
+            pass
+    except ExceptionRAPDU:
+        pass
+    else:
+        assert False
+
+    moves = list()
+    if firmware.device.startswith("nano"):
+        if firmware.device == "nanos":
+            moves += [NavInsID.RIGHT_CLICK]
+        moves += [NavInsID.BOTH_CLICK]
+    else:
+        moves += [NavInsID.USE_CASE_CHOICE_CONFIRM]
+    navigator.navigate_and_compare(ROOT_SNAPSHOT_PATH,
+                                   "blind-signed_approval",
+                                   moves)

tests/ragger/test_nft.py

@@ -11,12 +11,9 @@ import ledger_app_clients.ethereum.response_parser as ResponseParser
 from ledger_app_clients.ethereum.utils import get_selector_from_data, recover_transaction
 from web3 import Web3
 import json
-import os
-from constants import ROOT_SNAPSHOT_PATH
+from constants import ROOT_SNAPSHOT_PATH, ABIS_FOLDER
 
 
-ABIS_FOLDER = "%s/abis" % (os.path.dirname(__file__))
-
 BIP32_PATH = "m/44'/60'/0'/0/0"
 NONCE = 21
 GAS_PRICE = 13