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crashtest.behavior

Differential execution on the real HashLink runtime, never an emulated fallback.

Fixtures must expose return values, mutations and caught exceptions through output. Only terminating, repeatable observations can pass; unhandled errors, missing tools, output floods and timeouts fail closed. This is a corpus oracle, not equivalence proof for unexecuted branches or nondeterministic/interactive programs.

class BehavioralComparison​

passed: bool​

original: Execution​

recompiled: Execution​

error: str | None​

error = None

runtime: str​

runtime = 'HashLink'

exemption_reason: str | None​

exemption_reason = None

to_json​

def to_json() -> dict

from_json​

classmethod

@classmethod
def from_json(data: dict) -> BehavioralComparison

init​

def __init__(passed: bool, original: Execution, recompiled: Execution, error: str | None = None, runtime: str = 'HashLink', exemption_reason: str | None = None) -> None

class Execution​

stdout: str​

stdout = ''

stderr: str​

stderr = ''

returncode: int | None​

returncode = None

error: str | None​

error = None

init​

def __init__(stdout: str = '', stderr: str = '', returncode: int | None = None, error: str | None = None) -> None

compare_programs​

def compare_programs(original: Path, recompiled: Path, class_name: str, timeout: float = 5.0) -> BehavioralComparison

compile_haxe​

def compile_haxe(source: str, class_name: str, directory: Path) -> tuple[Path, str | None]

Compile one self-contained Haxe module for HashLink, retaining its artifact.

execute​

def execute(command: list[str], cwd: str, timeout: float = 5.0) -> Execution

Run with no input, isolated cwd, bounded output, and a hard deadline.

normalize_positions​

def normalize_positions(text: str, class_name: str) -> str

Strip source positions that only encode the module's own layout.

The fixture is compiled from tests/haxe/<Class>.hx and the decompiled program from <Class>.hx in a sandbox, and the decompiled source has its own line numbering, so neither trace prefixes (<Class>.hx:12: ) nor stack frames (Called from $C.main(<Class>.hx:12)) are comparable. Everything else — values, messages, frame order, function names — is.

resolve_hl_runtime​

def resolve_hl_runtime() -> str | None

Find the HashLink runtime to execute against.

HL_RUNTIME (an absolute path) always wins when set, e.g. for CI or a non-standard install. Otherwise, hl on PATH is used directly - no env var required for the common case of a normal local HashLink install.