Add sepolia (ethereum#2639)

* Add Sepolia testnet

* Add Sepolia to ethpm validation error message

Author: kclowes

ethpm/constants.py

@@ -15,4 +15,5 @@
     3: "ropsten",
     4: "rinkeby",
     5: "goerli",
+    11155111: "sepolia",
 }

ethpm/validation/uri.py

@@ -101,7 +101,7 @@ def validate_registry_uri_authority(auth: str) -> None:
     if not is_supported_chain_id(to_int(text=chain_id)):
         raise EthPMValidationError(
             f"Chain ID: {chain_id} is not supported. Supported chain ids include: "
-            "1 (mainnet), 3 (ropsten), 4 (rinkeby), and 5 (goerli)"
+            "1 (mainnet), 3 (ropsten), 4 (rinkeby), 5 (goerli), and 11155111 (sepolia)."
             "Please try again with a valid registry URI."
         )
 

newsfragments/2650.feature.rst

@@ -0,0 +1 @@
+Add Sepolia auto provider

tests/ethpm/_utils/test_chain_utils.py

@@ -49,6 +49,7 @@ def test_parse_BIP122_uri(value, expected_resource_type):
         (3, True),
         (4, True),
         (5, True),
+        (11155111, True),
         (2, False),
         ("1", False),
         ({}, False),

web3/auto/infura/endpoints.py

@@ -20,6 +20,7 @@
 INFURA_ROPSTEN_DOMAIN = "ropsten.infura.io"
 INFURA_GOERLI_DOMAIN = "goerli.infura.io"
 INFURA_RINKEBY_DOMAIN = "rinkeby.infura.io"
+INFURA_SEPOLIA_DOMAIN = "sepolia.infura.io"
 
 WEBSOCKET_SCHEME = 'wss'
 HTTP_SCHEME = 'https'

web3/auto/infura/sepolia.py

@@ -0,0 +1,15 @@
+from web3 import Web3
+from web3.providers.auto import (
+    load_provider_from_uri,
+)
+
+from .endpoints import (
+    INFURA_SEPOLIA_DOMAIN,
+    build_http_headers,
+    build_infura_url,
+)
+
+_headers = build_http_headers()
+_infura_url = build_infura_url(INFURA_SEPOLIA_DOMAIN)
+
+w3 = Web3(load_provider_from_uri(_infura_url, _headers))