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Editing: bytecode_helper.py

"""bytecode_helper - support tools for testing correct bytecode generation"""

import unittest
import dis
import io

_UNSPECIFIED = object()

class BytecodeTestCase(unittest.TestCase):
    """Custom assertion methods for inspecting bytecode."""

def get_disassembly_as_string(self, co):
        s = io.StringIO()
        dis.dis(co, file=s)
        return s.getvalue()

def assertInBytecode(self, x, opname, argval=_UNSPECIFIED):
        """Returns instr if opname is found, otherwise throws AssertionError"""
        for instr in dis.get_instructions(x):
            if instr.opname == opname:
                if argval is _UNSPECIFIED or instr.argval == argval:
                    return instr
        disassembly = self.get_disassembly_as_string(x)
        if argval is _UNSPECIFIED:
            msg = '%s not found in bytecode:\n%s' % (opname, disassembly)
        else:
            msg = '(%s,%r) not found in bytecode:\n%s'
            msg = msg % (opname, argval, disassembly)
        self.fail(msg)

def assertNotInBytecode(self, x, opname, argval=_UNSPECIFIED):
        """Throws AssertionError if opname is found"""
        for instr in dis.get_instructions(x):
            if instr.opname == opname:
                disassembly = self.get_disassembly_as_string(x)
                if argval is _UNSPECIFIED:
                    msg = '%s occurs in bytecode:\n%s' % (opname, disassembly)
                    self.fail(msg)
                elif instr.argval == argval:
                    msg = '(%s,%r) occurs in bytecode:\n%s'
                    msg = msg % (opname, argval, disassembly)
                    self.fail(msg)

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Name	Type	Actions
.. (Parent Directory)
📄 __init__.py	FILE	[EDIT]
📁 __pycache__/	DIR
📄 bytecode_helper.py	FILE	[EDIT]
📄 hashlib_helper.py	FILE	[EDIT]
📄 import_helper.py	FILE	[EDIT]
📄 interpreters.py	FILE	[EDIT]
📄 logging_helper.py	FILE	[EDIT]
📄 os_helper.py	FILE	[EDIT]
📄 script_helper.py	FILE	[EDIT]
📄 socket_helper.py	FILE	[EDIT]
📄 testresult.py	FILE	[EDIT]
📄 threading_helper.py	FILE	[EDIT]
📄 warnings_helper.py	FILE	[EDIT]

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Editing: bytecode_helper.py