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GeezerVison is showing github.com — RustPython/scripts/tests/test_whatsleft.py at main · RustPython/RustPython Expand file tree/ Copy pathtest_whatsleft.pyMore file actions 841 lines (742 loc) · 28.6 KB / Copy pathtest_whatsleft.pyFile metadata and controls841 lines (742 loc) · 28.6 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 """Tests for whats_left's selected top-level reference discovery. Checks for ambiguity in whats_left's flattened reference inventory. Tests for scan coverage and reference-signature error accounting. """ import ast import inspect import io import json import os import pathlib import re import sys import tempfile import types import unittest import warnings from contextlib import redirect_stdout SOURCE = pathlib.Path(__file__).resolve().parents[1] / "whats_left.py" tree = ast.parse(SOURCE.read_text(encoding="utf-8")) names = { "record_reference_discovery", "scan_modules", "gen_modules", "record_reference_issue", "reference_direct_names", "ensure_reference_class_scope", } nodes = [ node for node in tree.body if isinstance(node, ast.FunctionDef) and node.name in names ] discovery_namespace = { "_discovery_type": type, "_discovery_str": str, "_discovery_len": len, "_MAX_DISCOVERY_RECORDS": 16384, "_MAX_DISCOVERY_CHARS": 1048576, "_reference_type": type, "_reference_str": str, "_reference_len": len, "_reference_set": set, "_reference_sum": sum, "_reference_any": any, "_reference_chars_used": [0], "_MAX_REFERENCE_FIELD_CHARS": 4096, "_MAX_REFERENCE_TOTAL_CHARS": 32768, "_MAX_REFERENCE_ISSUES": 1024, "reference_inventory_diagnostics": {"issues": [], "truncated": False}, "reference_class_selection": {}, "warnings": warnings, "sys": sys, } exec( compile(ast.Module(nodes, type_ignores=[]), str(SOURCE), "exec"), discovery_namespace, ) class DiscoveryTests(unittest.TestCase): def setUp(self): self.original = discovery_namespace.copy() discovery_namespace.update( reference_discovery={ "names": [], "ignored": [], "scanner_errors": [], "truncated": False, }, _discovery_chars=[0], ) def tearDown(self): discovery_namespace.clear() discovery_namespace.update(self.original) def test_scanner_errors_do_not_change_selection(self): class Scanner: def run(self, callback, onerror): callback(None, "ok", None) onerror("broken.child") onerror("broken") onerror("broken") discovery_namespace["ModuleScanner"] = Scanner self.assertEqual(discovery_namespace["scan_modules"](), ["ok", "broken"]) self.assertEqual( discovery_namespace["reference_discovery"]["scanner_errors"], ["broken.child", "broken", "broken"], ) def test_discovery_records_ignored_and_failed_names(self): discovery_namespace.update( scan_modules=lambda: ["ok", "bad", "skip"], name_sort_key=lambda name: name, IGNORED_MODULES={"skip"}, dir_of_mod_or_error=lambda name, keep_other: ( ImportError("bad") if name == "bad" else {} ), import_module=lambda name: types.ModuleType(name), BUILTIN_TYPES=[], ) modules, _failed = discovery_namespace["gen_modules"]() self.assertEqual(set(modules), {"ok"}) self.assertEqual( discovery_namespace["reference_discovery"]["names"], ["bad", "ok", "skip"] ) self.assertEqual( discovery_namespace["reference_discovery"]["ignored"], ["skip"] ) def test_sorted_lookup_precedes_scanner_execution(self): events = [] def original_sorted(items, **kwargs): events.append("original") return sorted(items, **kwargs) def replacement_sorted(items, **kwargs): events.append("replacement") return sorted(items, **kwargs) def scan(): discovery_namespace["sorted"] = replacement_sorted return [] discovery_namespace.update( sorted=original_sorted, scan_modules=scan, name_sort_key=lambda name: name, IGNORED_MODULES=set(), ) discovery_namespace["gen_modules"]() self.assertEqual(events, ["original"]) def test_record_count_and_name_lengths_are_bounded(self): discovery_namespace["_MAX_DISCOVERY_RECORDS"] = 1 record = discovery_namespace["record_reference_discovery"] record("scanner_errors", "") record("scanner_errors", "") self.assertEqual( discovery_namespace["reference_discovery"]["scanner_errors"], [""] ) self.assertTrue(discovery_namespace["reference_discovery"]["truncated"]) discovery_namespace["reference_discovery"] = { "names": [], "ignored": [], "scanner_errors": [], "truncated": False, } discovery_namespace["_discovery_chars"] = [0] record("names", "x" * 4097) self.assertEqual(discovery_namespace["reference_discovery"]["names"], []) self.assertTrue(discovery_namespace["reference_discovery"]["truncated"]) def test_non_exact_name_is_not_represented_or_reformatted(self): class Hostile(str): def __repr__(self): raise AssertionError("repr called") def __str__(self): raise AssertionError("str called") discovery_namespace["record_reference_discovery"]("names", Hostile("x")) self.assertEqual(discovery_namespace["reference_discovery"]["names"], []) self.assertTrue(discovery_namespace["reference_discovery"]["truncated"]) names = { "record_reference_issue", "record_reference_expanded_class", "ensure_reference_class_scope", "record_reference_class_selection", "reference_direct_names", "check_reference_class_member", "_expand_class_members", "gen_methods", } nodes = [n for n in tree.body if isinstance(n, ast.FunctionDef) and n.name in names] inventory_namespace = { "_reference_type": type, "_reference_str": str, "_reference_len": len, "_reference_set": set, "_reference_sum": sum, "_reference_any": any, "_reference_chars_used": [0], "_MAX_REFERENCE_FIELD_CHARS": 4096, "_MAX_REFERENCE_TOTAL_CHARS": 32768, "_MAX_REFERENCE_ISSUES": 1024, "reference_inventory_diagnostics": {"issues": [], "truncated": False}, "reference_expanded_classes": {}, "reference_class_selection": {}, } exec( compile(ast.Module(nodes, type_ignores=[]), str(SOURCE), "exec"), inventory_namespace, ) class InventoryTests(unittest.TestCase): def setUp(self): self.original = inventory_namespace.copy() inventory_namespace["reference_inventory_diagnostics"] = { "issues": [], "truncated": False, } inventory_namespace["_reference_chars_used"] = [0] inventory_namespace["reference_expanded_classes"] = {} inventory_namespace["reference_class_selection"] = {} def tearDown(self): inventory_namespace.clear() inventory_namespace.update(self.original) def test_direct_dotted_and_generated_collisions(self): result = {"A.member": "direct"} seen = inventory_namespace["reference_direct_names"](result, "demo") check = inventory_namespace["check_reference_class_member"] check(seen, "demo", "member", "A.member") result["A.member"] = "first" check(seen, "demo", "member", "A.member") result["A.member"] = "second" check(seen, "demo", "nested.member", "A.nested.member") result["A.nested.member"] = "third" self.assertEqual(result["A.member"], "second") self.assertEqual( inventory_namespace["reference_inventory_diagnostics"]["issues"], [ ("dotted_module_attribute", "demo", "A.member"), ("flattened_name_collision", "demo", "A.member"), ("flattened_name_collision", "demo", "A.member"), ("dotted_class_attribute", "demo", "A.nested.member"), ], ) def test_different_class_paths_collide_after_flattening(self): check = inventory_namespace["check_reference_class_member"] seen = set() check(seen, "demo", "B.C", "A.B.C") check(seen, "demo", "C", "A.B.C") self.assertEqual( inventory_namespace["reference_inventory_diagnostics"]["issues"], [ ("dotted_class_attribute", "demo", "A.B.C"), ("flattened_name_collision", "demo", "A.B.C"), ], ) def test_non_exact_formatted_key_is_not_hashed(self): class Hostile(str): def __hash__(self): raise AssertionError("hash called") def __repr__(self): raise AssertionError("repr called") inventory_namespace["check_reference_class_member"]( set(), "demo", "x", Hostile("C.x") ) self.assertEqual( inventory_namespace["reference_inventory_diagnostics"]["issues"], [("non_exact_flattened_name", "demo", None)], ) def test_non_exact_names_add_no_hash_equality_or_contains_callbacks(self): calls = [] class Hostile(str): def __hash__(self): calls.append("hash") return super().__hash__() def __eq__(self, other): calls.append("eq") return super().__eq__(other) def __contains__(self, other): calls.append("contains") return super().__contains__(other) def __repr__(self): raise AssertionError("repr called") result = {Hostile("C.member"): 1} calls.clear() inventory_namespace["reference_direct_names"](result, "demo") self.assertEqual(calls, []) self.assertEqual( inventory_namespace["reference_inventory_diagnostics"]["issues"], [("non_exact_module_attribute", "demo", None)], ) def test_existing_formatter_caller_and_count_are_preserved(self): import sys calls = [] class Hostile(str): def __format__(self, spec): caller = sys._getframe(1).f_code.co_name calls.append(caller) return caller def __repr__(self): raise AssertionError("repr called") class DecimalType: pass module = types.SimpleNamespace(DecimalType=DecimalType) result = {"DecimalType": {}} inventory_namespace.update( BUILTIN_TYPES=[], own_attrs=lambda obj: [(Hostile("x"), 1)] ) inventory_namespace["_expand_class_members"](result, module) self.assertEqual(calls, ["_expand_class_members"]) self.assertEqual(result["DecimalType._expand_class_members"], 1) self.assertEqual( inventory_namespace["reference_inventory_diagnostics"]["issues"], [("non_exact_class_name_or_attribute", "decimal", None)], ) def test_hostile_formatter_cannot_change_original_rhs_value(self): import sys class Hostile(str): def __format__(self, spec): sys._getframe(1).f_locals["info"] = "mutated" return "x" class DecimalType: pass module = types.SimpleNamespace(DecimalType=DecimalType) result = {"DecimalType": {}} inventory_namespace.update( BUILTIN_TYPES=[], own_attrs=lambda obj: [(Hostile("x"), "original")] ) inventory_namespace["_expand_class_members"](result, module) self.assertEqual(result["DecimalType.x"], "original") self.assertTrue( inventory_namespace["reference_inventory_diagnostics"]["issues"] ) def test_non_exact_scope_is_reported_without_repr(self): class Hostile(str): def __repr__(self): raise AssertionError("repr called") inventory_namespace["reference_direct_names"]({}, Hostile("demo")) self.assertEqual( inventory_namespace["reference_inventory_diagnostics"]["issues"], [("non_exact_module_name", None, None)], ) def test_oversized_diagnostics_are_truncated(self): inventory_namespace["_MAX_REFERENCE_FIELD_CHARS"] = 2 inventory_namespace["record_reference_issue"]("large", "demo", "x") self.assertEqual( inventory_namespace["reference_inventory_diagnostics"], {"issues": [], "truncated": True}, ) def test_total_text_budget_is_enforced(self): inventory_namespace["_MAX_REFERENCE_TOTAL_CHARS"] = 4 record = inventory_namespace["record_reference_issue"] record("one", "d", "xy") record("two", "d", "xy") self.assertEqual( inventory_namespace["reference_inventory_diagnostics"], {"issues": [("one", "d", "xy")], "truncated": True}, ) def test_decimal_expansion_accounts_for_direct_names(self): class DecimalType: pass DecimalType.__name__ = "DecimalType" module = types.SimpleNamespace(DecimalType=DecimalType) result = {"DecimalType": {}, "DecimalType.x": "direct"} inventory_namespace.update( BUILTIN_TYPES=[], own_attrs=lambda obj: [("x", "member")] ) inventory_namespace["_expand_class_members"](result, module) self.assertEqual(result["DecimalType.x"], "member") self.assertEqual( inventory_namespace["reference_inventory_diagnostics"]["issues"], [ ("dotted_module_attribute", "decimal", "DecimalType.x"), ("flattened_name_collision", "decimal", "DecimalType.x"), ], ) def test_reference_class_selection_covers_other_and_dotted_names(self): class Empty: pass module = types.SimpleNamespace(Empty=Empty, plain=1) result = {"Empty": {}, "plain": {}, "A.b": {}} inventory_namespace.update(BUILTIN_TYPES=[], own_attrs=lambda obj: []) inventory_namespace["_expand_class_members"](result, module) self.assertEqual( inventory_namespace["reference_class_selection"], { "decimal": { "Empty": "selected", "plain": "not_selected", "A.b": "skipped_dotted", } }, ) def test_zero_member_expanded_class_is_recorded(self): class Empty: pass module = types.SimpleNamespace(Empty=Empty) result = {"Empty": {}} inventory_namespace.update(BUILTIN_TYPES=[], own_attrs=lambda obj: []) inventory_namespace["_expand_class_members"](result, module) self.assertEqual( inventory_namespace["reference_expanded_classes"], {"decimal": ["Empty"]} ) self.assertEqual( inventory_namespace["reference_class_selection"], {"decimal": {"Empty": "selected"}}, ) def test_duplicate_builtin_names(self): inventory_namespace.update( BUILTIN_TYPES=[], eval=lambda code: list, extra_info=lambda obj: {}, own_attrs=lambda obj: [], name_sort_key=lambda name: name, ) inventory_namespace["gen_methods"]() self.assertTrue( any( item[0] == "duplicate_builtin_type" for item in inventory_namespace["reference_inventory_diagnostics"][ "issues" ] ) ) def test_dotted_builtin_type_is_ambiguous(self): unusual = type("A.B", (), {}) inventory_namespace.update( BUILTIN_TYPES=[], eval=lambda code: unusual, extra_info=lambda obj: {}, own_attrs=lambda obj: [], name_sort_key=lambda name: name, ) inventory_namespace["gen_methods"]() self.assertIn( ("dotted_builtin_type", "builtins", "A.B"), inventory_namespace["reference_inventory_diagnostics"]["issues"], ) def test_non_native_builtin_type_keeps_original_rhs_order(self): import sys events = [] class FakeType: @property def __name__(self): events.append("name") sys._getframe(1).f_locals["info"] = "mutated" return "Repeated" typ = FakeType() inventory_namespace.update( BUILTIN_TYPES=[], eval=lambda code: typ, extra_info=lambda obj: events.append("info") or {"original": True}, own_attrs=lambda obj: events.append("attrs") or [], name_sort_key=lambda name: name, ) output = inventory_namespace["gen_methods"]() self.assertEqual(events, ["info", "attrs", "name"] * (len(events) // 3)) self.assertIn("'original': True", output) self.assertNotIn("mutated", output) self.assertTrue( any( item[0] == "non_native_builtin_type" for item in inventory_namespace["reference_inventory_diagnostics"][ "issues" ] ) ) def test_rhs_callback_can_replace_type_without_changing_assignment_order(self): import sys class Hostile: @property def __name__(self): sys._getframe(1).f_locals["info"] = "mutated" return "Replacement" replacement = Hostile() def inspect_type(obj): sys._getframe(1).f_locals["typ"] = replacement return {"original": True} inventory_namespace.update( BUILTIN_TYPES=[], eval=lambda code: list, extra_info=inspect_type, own_attrs=lambda obj: [], name_sort_key=lambda name: name, ) output = inventory_namespace["gen_methods"]() self.assertIn("'original': True", output) self.assertNotIn("mutated", output) self.assertTrue( any( item[0] == "non_native_builtin_type" for item in inventory_namespace["reference_inventory_diagnostics"][ "issues" ] ) ) def test_diagnostics_are_bounded_and_truncation_explicit(self): inventory_namespace["_MAX_REFERENCE_ISSUES"] = 1 record = inventory_namespace["record_reference_issue"] record("one", "demo", "x") record("two", "demo", "y") self.assertEqual( inventory_namespace["reference_inventory_diagnostics"], {"issues": [("one", "demo", "x")], "truncated": True}, ) names = { "attr_is_not_inherited", "compare", "observe_real_type", "observe_real_exception", "dir_of_mod_or_error", "name_sort_key", } nodes = [n for n in tree.body if isinstance(n, ast.FunctionDef) and n.name in names] coverage_namespace = { "cpython_failed_imports": {}, "reference_discovery": {}, "inspect": inspect, "re": re, "sys": sys, "reference_inventory_diagnostics": {"issues": [], "truncated": False}, "reference_expanded_classes": {}, "reference_class_selection": {}, "actual_parent_scans": {}, "_safe_type": type, "_safe_str": str, "_safe_frozenset": frozenset, } exec( compile(ast.Module(nodes, type_ignores=[]), str(SOURCE), "exec"), coverage_namespace ) for name in ("extra_info",): node = next( n for n in tree.body if isinstance(n, ast.FunctionDef) and n.name == name ) exec( compile(ast.Module([node], type_ignores=[]), str(SOURCE), "exec"), coverage_namespace, ) class CoverageTests(unittest.TestCase): def setUp(self): original = coverage_namespace.copy() coverage_namespace["actual_parent_scans"] = {} coverage_namespace["reference_expanded_classes"] = {} def restore(): coverage_namespace.clear() coverage_namespace.update(original) self.addCleanup(restore) def test_real_type_observation_ignores_spoofed_class(self): calls = [] class PretendsToBeType: @property def __class__(self): calls.append("class") return type obj = PretendsToBeType() self.assertTrue(isinstance(obj, type)) calls.clear() self.assertEqual(coverage_namespace["observe_real_type"](obj), "not_real_type") self.assertEqual(calls, []) self.assertEqual(coverage_namespace["observe_real_type"](list), "real_type") def test_direct_scan_records_selected_parents_without_extra_getters(self): calls = [] class Pretend: @property def __class__(self): calls.append("spoofed_class") return type class Item: pass bad = object() values = {"Type": Item, "Pretend": Pretend(), "Failure": bad} class Module: def __dir__(self): return list(values) def __getattribute__(self, name): if name in values: calls.append(name) return values[name] return super().__getattribute__(name) observe = coverage_namespace["observe_real_type"] coverage_namespace.update( import_module=lambda name: Module(), extra_info=lambda obj: {"sig": None, "sig_error": False, "doc": None}, observe_real_type=lambda obj: ( "classification_failed" if obj is bad else observe(obj) ), reference_expanded_classes={ "demo": ["Type", "Pretend", "Failure", "Missing"] }, ) coverage_namespace["dir_of_mod_or_error"]("demo") self.assertEqual(calls, ["Failure", "Pretend", "Type"]) self.assertEqual( coverage_namespace["actual_parent_scans"], { "demo": { "Failure": "classification_failed", "Pretend": "not_real_type", "Type": "real_type", } }, ) def test_module_scan_and_second_import_outcomes_are_distinct(self): ref = { "sig": "(self, /)", "sig_error": False, "doc": "same", } with tempfile.TemporaryDirectory() as tmp: pathlib.Path(tmp, "failed.py").touch() pathlib.Path(tmp, "demo.py").touch() coverage_namespace.update( expected_methods={}, cpymods={ "absent": {}, "failed": {}, "demo": {"Thing": ref, "Thing.member": ref}, }, libdir=os.fsencode(tmp), reference_expanded_classes={ "absent": ["Empty"], "failed": ["Empty"], "demo": ["Thing"], }, dir_of_mod_or_error=lambda name: ( RuntimeError("failed") if name == "failed" else {"Thing": ref} ), import_module=lambda name: RuntimeError("second import failed"), ) output = io.StringIO() with redirect_stdout(output): coverage_namespace["compare"]() result = json.loads(output.getvalue()) self.assertEqual( result["actual_scan_status"], { "absent": "not_discovered", "failed": "scan_returned_exception", "demo": "scan_completed", }, ) self.assertEqual( result["actual_second_import_status"], { "absent": "not_attempted", "failed": "not_attempted", "demo": "returned_exception", }, ) self.assertEqual( result["actual_parent_decisions"]["demo"], {"Thing.member": "isinstance_false"}, ) self.assertEqual( result["actual_parent_scans"]["absent"], {"Empty": "not_observed"} ) def test_module_inherited_and_missing_observations(self): class Parent: def same(self): pass def other(self): pass class Child(Parent): pass module = types.ModuleType("demo") module.Thing = Child ref = { "sig": "(self, /)", "sig_error": False, "doc": "same", } actual = { **ref, } incompatible = {**actual, "sig": "(self, required, /)"} def inspect_item(obj): return incompatible if obj is Parent.other else actual with tempfile.TemporaryDirectory() as tmp: pathlib.Path(tmp, "demo.py").touch() coverage_namespace.update( { "expected_methods": {}, "reference_expanded_classes": {"demo": ["Thing", "Empty"]}, "actual_parent_scans": {"demo": {"Thing": "real_type"}}, "cpymods": { "demo": { "Thing": ref, "Thing.same": ref, "Thing.other": ref, "Thing.missing": ref, } }, "libdir": os.fsencode(tmp), "extra_info": inspect_item, "dir_of_mod_or_error": lambda name: ( {"Thing": actual} if name == "demo" else {} ), "import_module": lambda name: module, } ) output = io.StringIO() with redirect_stdout(output): coverage_namespace["compare"]() result = json.loads(output.getvalue()) self.assertIn("demo.Thing.other (inherited)", result["missing_items"]["demo"]) self.assertIn("demo.Thing.missing", result["missing_items"]["demo"]) self.assertNotIn("demo.Thing.same", result["missing_items"]["demo"]) self.assertEqual(result["actual_scan_status"]["demo"], "scan_completed") self.assertEqual( result["actual_second_import_status"]["demo"], "returned_nonexception" ) self.assertEqual( result["actual_parent_scans"]["demo"], {"Thing": "real_type", "Empty": "not_observed"}, ) self.assertEqual( result["actual_parent_decisions"]["demo"], { "Thing.same": "isinstance_true", "Thing.other": "isinstance_true", "Thing.missing": "isinstance_true", }, ) class ReferenceErrorTests(unittest.TestCase): def setUp(self): global reference_error_namespace reference_error_namespace = coverage_namespace original = coverage_namespace.copy() reference_error_namespace["actual_parent_scans"] = {} reference_error_namespace["reference_expanded_classes"] = {} def restore(): coverage_namespace.clear() coverage_namespace.update(original) self.addCleanup(restore) def run_comparison(self, *, module_error): builtin = {"sig": "ValueError('builtin')", "sig_error": True, "doc": None} reference = { "sig": "ValueError('module')" if module_error else "(x, /)", "sig_error": module_error, "doc": "same", } actual = {"sig": "(x, /)", "sig_error": False, "doc": "same"} with tempfile.TemporaryDirectory() as tmp: pathlib.Path(tmp, "demo.py").touch() reference_error_namespace.update( expected_methods={"demo": (type, builtin, [])}, cpymods={"demo": {"f": reference}}, libdir=os.fsencode(tmp), dir_of_mod_or_error=lambda name: {"f": actual}, import_module=lambda name: types.ModuleType(name), ) output = io.StringIO() with redirect_stdout(output): reference_error_namespace["compare"]() return json.loads(output.getvalue()) def test_builtin_name_collision_does_not_hide_clean_module(self): result = self.run_comparison(module_error=False) self.assertIn("demo", result["implemented"]) self.assertEqual( result["uncomparable_signatures"]["demo"], [["demo", "ValueError('builtin')"]], ) def test_module_reference_error_still_prevents_clean_classification(self): result = self.run_comparison(module_error=True) self.assertNotIn("demo", result["implemented"]) self.assertIn( ["demo.f", "ValueError('module')"], result["uncomparable_signatures"]["demo"], ) if __name__ == "__main__": unittest.main() |
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