feat: show nicer errors during bad network choices (ApeWorX#2234)

src/ape/cli/choices.py

@@ -9,7 +9,12 @@
 
 from ape.api.accounts import AccountAPI
 from ape.api.providers import ProviderAPI
-from ape.exceptions import AccountsError
+from ape.exceptions import (
+    AccountsError,
+    EcosystemNotFoundError,
+    NetworkNotFoundError,
+    ProviderNotFoundError,
+)
 from ape.types import _LazySequence
 from ape.utils.basemodel import ManagerAccessMixin
 
@@ -369,6 +374,12 @@ def convert(self, value: Any, param: Optional[Parameter], ctx: Optional[Context]
                 # (as-is the case for custom-forked networks).
                 try:
                     choice = networks.get_provider_from_choice(network_choice=value)
+
+                except (EcosystemNotFoundError, NetworkNotFoundError, ProviderNotFoundError) as err:
+                    # This error makes more sense, as it has attempted parsing.
+                    # Show this message as the BadParameter message.
+                    raise click.BadParameter(str(err)) from err
+
                 except Exception as err:
                     # If an error was not raised for some reason, raise a simpler error.
                     # NOTE: Still avoid showing the massive network options list.

src/ape/exceptions.py

@@ -463,7 +463,7 @@ def __init__(
         if options:
             close_matches = difflib.get_close_matches(provider, options, cutoff=0.6)
             if close_matches:
-                message = f"{message} Did you mean '{', '.join(close_matches)}'?"
+                message = f"{message}. Did you mean '{', '.join(close_matches)}'?"
             else:
                 # No close matches. Show all provider options.
                 options_str = "\n".join(sorted(options))

tests/functional/test_cli.py

@@ -4,6 +4,7 @@
 
 import click
 import pytest
+from click import BadParameter
 
 from ape.cli import (
     AccountAliasPromptChoice,
@@ -839,49 +840,66 @@ def test_parse_network_when_explicit_none(mocker):
     assert network_ctx is None
 
 
-def test_network_choice():
-    network_choice = NetworkChoice()
-    actual = network_choice.convert("ethereum:local:test", None, None)
-    assert actual.name == "test"
-    assert actual.network.name == "local"
-
-
-@pytest.mark.parametrize("prefix", ("", "ethereum:custom:"))
-def test_network_choice_custom_adhoc_network(prefix):
-    network_choice = NetworkChoice()
-    uri = "https://example.com"
-    actual = network_choice.convert(f"{prefix}{uri}", None, None)
-    assert actual.uri == uri
-    assert actual.network.name == "custom"
-
-
-def test_network_choice_custom_config_network(custom_networks_config_dict, project):
-    data = copy.deepcopy(custom_networks_config_dict)
-
-    # Was a bug where couldn't have this name.
-    data["networks"]["custom"][0]["name"] = "custom"
-
-    _get_networks_sequence_from_cache.cache_clear()
-
-    network_choice = NetworkChoice()
-    with project.temp_config(**data):
-        actual = network_choice.convert("ethereum:custom", None, None)
-
-    assert actual.network.name == "custom"
-
-
-def test_network_choice_when_custom_local_network():
-    network_choice = NetworkChoice()
-    uri = "https://example.com"
-    actual = network_choice.convert(f"ethereum:local:{uri}", None, None)
-    assert actual.uri == uri
-    assert actual.network.name == "local"
-
-
-def test_network_choice_explicit_none():
-    network_choice = NetworkChoice()
-    actual = network_choice.convert("None", None, None)
-    assert actual == _NONE_NETWORK
+class TestNetworkChoice:
+    @pytest.fixture
+    def network_choice(self):
+        return NetworkChoice()
+
+    def test_test(self, network_choice):
+        actual = network_choice.convert("ethereum:local:test", None, None)
+        assert actual.name == "test"
+        assert actual.network.name == "local"
+
+    @pytest.mark.parametrize("prefix", ("", "ethereum:custom:"))
+    def test_adhoc(self, network_choice, prefix):
+        uri = "https://example.com"
+        actual = network_choice.convert(f"{prefix}{uri}", None, None)
+        assert actual.uri == uri
+        assert actual.network.name == "custom"
+
+    def test_custom_config_network(self, custom_networks_config_dict, project, network_choice):
+        data = copy.deepcopy(custom_networks_config_dict)
+
+        # Was a bug where couldn't have this name.
+        data["networks"]["custom"][0]["name"] = "custom"
+
+        _get_networks_sequence_from_cache.cache_clear()
+
+        with project.temp_config(**data):
+            actual = network_choice.convert("ethereum:custom", None, None)
+
+        assert actual.network.name == "custom"
+
+    def test_custom_local_network(self, network_choice):
+        uri = "https://example.com"
+        actual = network_choice.convert(f"ethereum:local:{uri}", None, None)
+        assert actual.uri == uri
+        assert actual.network.name == "local"
+
+    def test_explicit_none(self, network_choice):
+        actual = network_choice.convert("None", None, None)
+        assert actual == _NONE_NETWORK
+
+    def test_bad_ecosystem(self, network_choice):
+        # NOTE: "ethereum" is spelled wrong.
+        expected = r"No ecosystem named 'etheruem'\. Did you mean 'ethereum'\?"
+        with pytest.raises(BadParameter, match=expected):
+            network_choice.convert("etheruem:local:test", None, None)
+
+    def test_bad_network(self, network_choice):
+        # NOTE: "local" is spelled wrong.
+        expected = r"No network in 'ethereum' named 'lokal'\. Did you mean 'local'\?"
+        with pytest.raises(BadParameter, match=expected):
+            network_choice.convert("ethereum:lokal:test", None, None)
+
+    def test_bad_provider(self, network_choice):
+        # NOTE: "test" is spelled wrong.
+        expected = (
+            r"No provider named 'teest' in network 'local' in "
+            r"ecosystem 'ethereum'\. Did you mean 'test'\?"
+        )
+        with pytest.raises(BadParameter, match=expected):
+            network_choice.convert("ethereum:local:teest", None, None)
 
 
 def test_config_override_option(runner):