feat: remove two-step-api exceptions

this is also a silly hacky excuse to yank 3.0.1. i accidentally included
breaking changes in there due to a commit message that i failed to add
the breaking changes footer to _and_ accidentally pushed directly to
master. oops! anyway.

BREAKING CHANGE: Not only will the two-step API not work anymore, but
- **Python 3.7 is no longer supported**
- code generation is a feature!
  - Render() and friends are a thing
- cases try to deserialize input as json

Author: ainsleymcgrath

pytest_embrace/embrace.py

@@ -5,13 +5,13 @@
 from inspect import signature
 from typing import Any, Callable, Generic
 from typing import MutableMapping as TMutableMapping
-from typing import NoReturn, Type, TypeVar
+from typing import Type, TypeVar
 
 import pytest
 from typing_extensions import ParamSpec
 
 from .case import CaseArtifact, CaseRunner, CaseType, CaseTypeInfo
-from .exc import CaseConfigurationError, TwoStepApiDeprecationError
+from .exc import CaseConfigurationError
 
 RegistryValue = Type["CaseType"]
 
@@ -72,12 +72,6 @@ def __init__(self, case_type: Type[CaseType], skip_validation: bool = False):
         self.fixture_name: str = ""
         self.skip_validation = skip_validation
 
-    def register_case_runner(self, *_: Any) -> NoReturn:
-        raise TwoStepApiDeprecationError(deprecated_method="register_case_runner")
-
-    def caller_fixture_factory(self, *_: Any) -> NoReturn:
-        raise TwoStepApiDeprecationError(deprecated_method="caller_fixture_factory")
-
     def fixture(
         self, func: CaseRunner
     ) -> Callable[[CaseType, pytest.FixtureRequest], Iterator[CaseArtifact[CaseType]]]:

pytest_embrace/exc.py

@@ -1,7 +1,5 @@
 from __future__ import annotations
 
-from textwrap import dedent
-
 
 class EmbraceError(Exception):
     """Base for framework errors."""
@@ -11,22 +9,5 @@ class CaseConfigurationError(EmbraceError):
     """Raise at build/collection time."""
 
 
-class TwoStepApiDeprecationError(EmbraceError):
-    """Very specific error for methods deprecated after 3.0."""
-
-    def __init__(self, *, deprecated_method: str) -> None:
-        msg = f"""
-        `{deprecated_method}` is deprecated in favor of `Embrace.fixture`.
-        The new API unifies the old two-step process into one.
-        and requires very minimal code changes.
-
-        See migration guide in the docs:
-            https://ainsleymcgrath.github.io/pytest-embrace/two-to-three/
-
-        In future releases, this method will completely removed."""
-
-        super().__init__(dedent(msg))
-
-
 class CodeGenError(EmbraceError):
     """Raise when anything related to codegen goes awry."""