Start on test_types

Author: EliahKagan

test/deprecation/test_types.py

@@ -0,0 +1,39 @@
+"""Tests for dynamic and static characteristics of git.types module attributes."""
+
+importsys
+
+ifsys.version_info>= (3, 8):
+fromtypingimportLiteral
+else:
+fromtyping_extensionsimportLiteral
+
+importpytest
+
+importgit.types
+
+
+deftest_cannot_access_undefined() ->None:
+"""Accessing a bogus attribute in git.types remains a dynamic and static error."""
+withpytest.raises(AttributeError):
+git.types.foo# type: ignore[attr-defined]
+
+
+deftest_lit_commit_ish() ->None:
+""" """
+# It would be fine to test attribute access rather than a "from" import. But a
+# "from" import is more likely to appear in actual usage, so it is used here.
+withpytest.deprecated_call() asctx:
+fromgit.typesimportLit_commit_ish
+
+# As noted in test_toplevel.test_util_alias_import, there may be multiple warnings,
+# but all with the same message.
+ (message,) ={str(entry.message) forentryinctx}
+assert"Lit_commit_ish is deprecated."inmessage
+assert'Literal["commit", "tag", "blob", "tree"]'inmessage, "Has old definition."
+assert'Literal["commit", "tag"]'inmessage, "Has new definition."
+assert"GitObjectTypeString"inmessage, "Has new type name for old definition."
+
+_: Lit_commit_ish="commit"# type: ignore[valid-type]
+
+# It should be as documented (even though deliberately unusable in static checks).
+assertLit_commit_ish==Literal["commit", "tag"]