Rehabilitate erc20 balance task

apps/cic-eth/tests/task/test_task_erc20.py

@@ -0,0 +1,43 @@
+# external imports
+import celery
+from chainlib.eth.erc20 import ERC20
+from chainlib.eth.nonce import RPCNonceOracle
+from chainlib.eth.tx import receipt
+
+
+def test_erc20_balance(
+        default_chain_spec,
+        foo_token,
+        token_roles,
+        agent_roles,
+        eth_signer,
+        eth_rpc,
+        celery_worker,
+        ):
+
+    nonce_oracle = RPCNonceOracle(token_roles['FOO_TOKEN_OWNER'], eth_rpc)
+    c = ERC20(signer=eth_signer, nonce_oracle=nonce_oracle)
+    transfer_value = 100 * (10**6)
+    (tx_hash_hex, o) = c.transfer(foo_token, token_roles['FOO_TOKEN_OWNER'], agent_roles['ALICE'], transfer_value)
+    eth_rpc.do(o)
+    
+    o = receipt(tx_hash_hex)
+    r = eth_rpc.do(o)
+    assert r['status'] == 1
+
+    token_object = {
+        'address': foo_token,
+            }
+    s = celery.signature(
+            'cic_eth.eth.erc20.balance',
+            [
+                [token_object],
+                agent_roles['ALICE'],
+                default_chain_spec.asdict(),
+                ],
+            queue=None,
+            )
+    t = s.apply_async()
+    r = t.get()
+    assert r[0]['balance_network'] == transfer_value
+