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- """Test runner for exception handling transform test cases.
- The transform inserts exception handling branch operations to IR.
- """
- from __future__ import annotations
- import os.path
- from mypy.errors import CompileError
- from mypy.test.config import test_temp_dir
- from mypy.test.data import DataDrivenTestCase
- from mypyc.analysis.blockfreq import frequently_executed_blocks
- from mypyc.common import TOP_LEVEL_NAME
- from mypyc.ir.pprint import format_func
- from mypyc.test.testutil import (
- ICODE_GEN_BUILTINS,
- MypycDataSuite,
- assert_test_output,
- build_ir_for_single_file,
- remove_comment_lines,
- use_custom_builtins,
- )
- from mypyc.transform.exceptions import insert_exception_handling
- from mypyc.transform.refcount import insert_ref_count_opcodes
- from mypyc.transform.uninit import insert_uninit_checks
- files = ["exceptions.test", "exceptions-freq.test"]
- class TestExceptionTransform(MypycDataSuite):
- files = files
- base_path = test_temp_dir
- def run_case(self, testcase: DataDrivenTestCase) -> None:
- """Perform a runtime checking transformation test case."""
- with use_custom_builtins(os.path.join(self.data_prefix, ICODE_GEN_BUILTINS), testcase):
- expected_output = remove_comment_lines(testcase.output)
- try:
- ir = build_ir_for_single_file(testcase.input)
- except CompileError as e:
- actual = e.messages
- else:
- actual = []
- for fn in ir:
- if fn.name == TOP_LEVEL_NAME and not testcase.name.endswith("_toplevel"):
- continue
- insert_uninit_checks(fn)
- insert_exception_handling(fn)
- insert_ref_count_opcodes(fn)
- actual.extend(format_func(fn))
- if testcase.name.endswith("_freq"):
- common = frequently_executed_blocks(fn.blocks[0])
- actual.append("hot blocks: %s" % sorted(b.label for b in common))
- assert_test_output(testcase, actual, "Invalid source code output", expected_output)
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