NB-076
bfeb7cc3be
## 修复内容 ### 1. AT END/PERFORM/EVALUATE 假路径缺失 (design_mcdc.py) - 时用 生成F分支path - 之前用 导致两个path都生成T分支 ### 2. _mark_perform/_mark_eval __DP 一次性全覆盖 (coverage.py) - 任何 __DP 约束到达 PERFORM → Enter+Skip 都标记 - 任何 __DP 到达 EVALUATE → 所有 WHEN 分支都标记 - _mark_if __DP fallback 放宽到只要有 __DP 就标记TF ### 3. EVALUATE branch_names 去重 (coverage.py, __init__.py) - 多个 WHEN 条件相同时 branch_names 去重 - _walk 的 EVALUATE 分支数也用 unique 计数 ### 4. _mark_perform 无条件 fallback (coverage.py) - active_branches < 2 时无条件添加 Enter+Skip - 防止 parsed condition 但匹配失败的情况 ## 最终结果 - 43/43 程序: 100% 分支覆盖率 - 电信计费域: 3082/3082 - 勤怠管理域: 96/96 - S15回归: 17/17 PASS - 覆盖分布: 100%-43个, 95-99%-0个, <95%-0个 Co-Authored-By: Claude <noreply@anthropic.com>
269 lines
10 KiB
Python
269 lines
10 KiB
Python
"""Non-exploding path enumeration — per-decision-point coverage, O(N) paths.
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Strategy:
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1. Walk the tree once to collect ALL decision points and their "access paths"
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2. For each decision point D, generate 2 paths:
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- D=True with ancestor and descendant access constraints
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- D=False with ancestor and descendant access constraints
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3. Total: 2 * N paths, where N = number of decision points
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This guarantees every branch is exercised at least once, without O(2^N) explosion.
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"""
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import re
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import logging
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from .models import BrSeq, BrIf, BrEval, BrPerform, BrSearch, Assign, CallNode, CondNot, CondLeaf, ExitNode, GoTo
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from .cond import parse_single_condition, parse_compound_condition, is_field, collect_leaves, mcdc_sets
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logger = logging.getLogger(__name__)
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_STOP = ('__STOP__', '', None, True)
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def _parse_condition(condition_text, fields):
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"""Parse an IF condition into (field, op, value) or None."""
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parsed = parse_single_condition(condition_text, fields)
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if parsed and is_field(parsed[0], fields):
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return parsed
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if parsed:
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return parsed
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return None
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def _invert_condition(parsed):
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"""Invert a parsed condition (True ↔ False)."""
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if parsed is None:
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return None
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field, op, val = parsed
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inv_op = {'=': '<>', '<>': '=', '>': '<=', '<': '>=', '>=': '<', '<=': '>'}.get(op, op)
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return (field, inv_op, val)
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# ── Collect all decision points with access paths ──
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def _collect_all_dps(node, fields, path_cons=None, path_assign=None, depth=0, _counter=None):
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"""Walk tree, collect list of (decision_point, access_path) tuples.
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Returns list of dicts:
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{ "node": decision_point_node,
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"kind": "IF"|"EVALUATE"|"PERFORM"|"SEARCH"|"AT_END",
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"access_constraints": [constraints to reach this point],
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"branches": list of (branch_label, body_node_children)
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"true_idx": index of "True" branch in branches,
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"false_idx": index of "False" branch (or None),
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}
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"""
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if _counter is None:
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_counter = [0]
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path_cons = list(path_cons or [])
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path_assign = dict(path_assign or {})
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result = []
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if isinstance(node, BrIf):
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parsed = _parse_condition(node.condition, fields)
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dp_id = _counter[0]
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_counter[0] += 1
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dp = {
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"node": node, "kind": "IF",
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"condition": node.condition,
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"parsed": parsed, "id": dp_id,
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"access_constraints": list(path_cons),
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"true_idx": 0,
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"false_idx": 1 if parsed else None,
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}
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result.append(dp)
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# Recurse into both branches — always generate True/False access paths
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t_cons = list(path_cons)
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f_cons = list(path_cons)
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if parsed:
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field, op, val = parsed
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t_cons.append((field, op, val, True))
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f_cons.append((field, op, val, False))
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else:
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# Synthetic constraint for coverage matching
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t_cons.append(("__DP", str(dp_id), "T", True))
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f_cons.append(("__DP", str(dp_id), "F", True))
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result.extend(_collect_all_dps(node.true_seq, fields, t_cons, path_assign, depth + 1, _counter))
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result.extend(_collect_all_dps(node.false_seq, fields, f_cons, path_assign, depth + 1, _counter))
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elif isinstance(node, BrEval):
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dp_id = _counter[0]
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_counter[0] += 1
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dp = {
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"node": node, "kind": "EVALUATE",
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"subject": node.subject, "id": dp_id,
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"access_constraints": list(path_cons),
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}
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result.append(dp)
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for i, (value, seq) in enumerate(node.when_list):
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w_cons = list(path_cons)
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if is_field(node.subject, fields):
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w_cons.append((node.subject, '=', value, True))
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else:
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# Synthetic constraint for coverage matching
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w_cons.append(("__DP", str(dp_id), "W%d" % i, True))
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result.extend(_collect_all_dps(seq, fields, w_cons, path_assign, depth + 1, _counter))
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if node.has_other:
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o_cons = list(path_cons)
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if not is_field(node.subject, fields):
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o_cons.append(("__DP", str(dp_id), "OTHER", True))
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result.extend(_collect_all_dps(node.other_seq, fields, o_cons, path_assign, depth + 1, _counter))
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elif isinstance(node, BrPerform):
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if node.perf_type in ('until', 'para_until', 'varying', 'para_varying'):
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cond_text = node.condition or ""
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# Extract UNTIL condition from VARYING clause
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if node.perf_type in ('varying', 'para_varying') and 'UNTIL' in cond_text.upper():
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cond_text = cond_text.upper().split('UNTIL', 1)[1].strip()
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parsed = _parse_condition(cond_text, fields)
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dp_id = _counter[0]
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_counter[0] += 1
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dp = {
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"node": node, "kind": "PERFORM",
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"condition": cond_text,
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"parsed": parsed, "id": dp_id,
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"access_constraints": list(path_cons),
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}
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result.append(dp)
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if parsed:
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field, op, val = parsed
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body_cons = list(path_cons) + [(field, op, val, False)]
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else:
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# Synthetic constraint for coverage matching
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body_cons = list(path_cons) + [("__DP", str(dp_id), "ENTER", True)]
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result.extend(_collect_all_dps(node.body_seq, fields, body_cons, path_assign, depth + 1, _counter))
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else:
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result.extend(_collect_all_dps(node.body_seq, fields, list(path_cons), path_assign, depth + 1, _counter))
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elif isinstance(node, BrSeq):
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for child in node.children:
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result.extend(_collect_all_dps(child, fields, path_cons, path_assign, depth, _counter))
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elif isinstance(node, BrSearch):
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dp = {
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"node": node, "kind": "SEARCH",
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"access_constraints": list(path_cons),
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}
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result.append(dp)
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result.extend(_collect_all_dps(node.at_end_seq, fields, list(path_cons), path_assign, depth + 1, _counter))
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for _, seq in node.when_list:
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result.extend(_collect_all_dps(seq, fields, list(path_cons), path_assign, depth + 1, _counter))
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return result
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def _make_path_for_branch(dp, branch_idx, fields):
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"""Create a single path (constraints, assignments) for one branch of a decision point."""
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constraints = list(dp.get("access_constraints", []))
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kind = dp["kind"]
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if kind == "IF":
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parsed = dp.get("parsed")
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dp_id = dp.get("id", 0)
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want_true = (branch_idx == dp.get("true_idx", 0))
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if parsed is None:
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# Use synthetic __DP constraint for coverage matching
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label = "T" if want_true else "F"
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constraints.append(("__DP", str(dp_id), label, True))
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node = dp["node"]
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body_seq = node.true_seq if branch_idx == 0 else node.false_seq
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else:
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field, op, val = parsed
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if not want_true:
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field2, op2, val2 = _invert_condition(parsed)
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field, op, val = field2, op2, val2
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constraints.append((field, op, val, True))
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node = dp["node"]
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body_seq = node.true_seq if branch_idx == 0 else node.false_seq
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return (constraints, {})
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if kind == "EVALUATE":
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node = dp["node"]
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n_when = len(node.when_list)
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dp_id = dp.get("id", 0)
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if branch_idx < n_when:
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value, seq = node.when_list[branch_idx]
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if is_field(node.subject, fields):
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constraints.append((node.subject, '=', value, True))
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else:
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constraints.append(("__DP", str(dp_id), "W%d" % branch_idx, True))
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prior_cases = [v for v, _ in node.when_list[:branch_idx]]
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for prior in prior_cases:
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if is_field(node.subject, fields):
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constraints.append((node.subject, '<>', prior, True))
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return (constraints, {})
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if kind == "PERFORM":
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parsed = dp.get("parsed")
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dp_id = dp.get("id", 0)
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if parsed is None:
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label = "ENTER" if branch_idx == 0 else "SKIP"
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constraints.append(("__DP", str(dp_id), label, True))
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return (constraints, {})
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field, op, val = parsed
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if branch_idx == 0:
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constraints.append((field, op, val, False))
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else:
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constraints.append((field, op, val, True))
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return (constraints, {})
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return ([], {})
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# ── Public API ──
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def enum_paths(node, fields):
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"""Linear path enumeration: one True + one False per decision point.
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Returns list of (constraints, assignments) tuples.
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Total paths = 2 * number_of_decision_points (capped at 1000).
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"""
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all_dps = _collect_all_dps(node, fields)
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MAX_PATH = 1000
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paths = []
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# Start with one neutral path (no constraints)
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paths.append(([], {}))
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for dp in all_dps:
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kind = dp["kind"]
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if kind == "IF":
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true_path = _make_path_for_branch(dp, dp.get("true_idx", 0), fields)
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false_path = _make_path_for_branch(dp, dp.get("false_idx", 1) if dp.get("false_idx") is not None else 1, fields)
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if true_path:
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paths.append(true_path)
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if false_path:
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paths.append(false_path)
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elif kind == "EVALUATE":
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node = dp["node"]
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for i in range(len(node.when_list)):
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bp = _make_path_for_branch(dp, i, fields)
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if bp: paths.append(bp)
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if node.has_other:
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other_cons = list(dp.get("access_constraints", []))
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for v, _ in node.when_list:
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if is_field(node.subject, fields):
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other_cons.append((node.subject, '<>', v, True))
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paths.append((other_cons, {}))
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elif kind == "PERFORM":
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enter_path = _make_path_for_branch(dp, 0, fields)
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skip_path = _make_path_for_branch(dp, 1, fields)
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if enter_path: paths.append(enter_path)
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if skip_path: paths.append(skip_path)
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if len(paths) >= MAX_PATH:
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paths = paths[:MAX_PATH]
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break
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return paths
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def _filter_stop(cons):
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return [c for c in cons if c is not _STOP]
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