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nisse/tests/integration/test_trust_live.py
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dongarandClaude Opus 5.5 ab469b60bb
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M3.3: the trust dial (the agent merges approved PRs)
A project's trust.merge is operator (the default) or approved (L3, D5,
#65). Set to approved, the harness, never the model, merges a PR in the
PR watch once an approving review from a gitea.operators account is on
its current commit, its checks pass (none at all counts; pending
waits) and it's mergeable; the item then goes on as after any merge.
Each reason to hold off (failed checks, conflicts, a refused merge) is
said once per commit.

Gitea enforces it: protection requires approvals from an operators-only
whitelist and dismisses stale ones. At start, for each approved
project, the agent checks by behaviour that its own unapproved merge is
refused, with a throwaway branch and PR made through the API (never the
workspace); if it isn't refused, the operator merges until a restart.

- gitea: approvals, combined check status, a PR's head commit and
  mergeability, API-made branches and their deletion.
- Test and bring-up repositories get the protection.
- Tests: the decision (unit), the hard wall on a real Gitea
  (test_trust_live), an e2e test where the operator only approves, and
  a walk property, merges_only_approved, checked against a mutant that
  ignores which commit was approved.

Closes #65

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPQ14L3LikyefCMFBqEbKE
2026-10-08 13:48:16 +00:00

76 lines
2.8 KiB
Python

"""The trust dial's hard wall, on a real Gitea (D4, D5; M3.3): with the
protection a `merge: approved` project has, the agent's own token can't
merge its PR until an operator approves the PR as it is now; it can then;
and a commit pushed after the approval needs approving again."""
import base64
import uuid
from pathlib import Path
import pytest
from e2e_support import fresh_repo, operator_gitea
from nisse_dev.config import AgentConfig
from nisse_dev.gitea import GiteaClient, GiteaError
pytestmark = pytest.mark.integration
def add_file(gitea: GiteaClient, repo: str, branch: str, path: str) -> None:
gitea._request(
"POST",
f"/repos/{repo}/contents/{path}",
json={
"content": base64.b64encode(f"{path}\n".encode()).decode(),
"message": f"add {path}",
"branch": branch,
},
)
def approve(operator: GiteaClient, repo: str, pr: int) -> None:
operator._request(
"POST", f"/repos/{repo}/pulls/{pr}/reviews", json={"event": "APPROVED"}
)
def test_merging_needs_the_operators_approval_of_the_pr_as_it_is(
tmp_path: Path, live_config: AgentConfig, gitea: GiteaClient
) -> None:
operator = operator_gitea(live_config.gitea_url)
run = uuid.uuid4().hex[:8]
with fresh_repo(operator, run, tmp_path / "keys", agent=gitea.whoami()) as repo:
name = repo.name
# The agent's PR, its branch made through the API.
gitea.branch_with_file(
name, base="main", branch="m-1", path="a.txt", text="a\n", message="a"
)
pr = gitea.open_pull_request(name, head="m-1", base="main", title="a", body="")
with pytest.raises(GiteaError):
gitea.merge_pull_request(name, pr.number) # no approval yet
approve(operator, name, pr.number)
[approval] = gitea.approvals(name, pr.number)
head = gitea.pull_request(name, pr.number).head_sha
assert (approval.author, approval.commit) == (operator.whoami(), head)
gitea.merge_pull_request(name, pr.number) # approved: the agent may
assert gitea.pull_request(name, pr.number).merged
# Approved, then changed: the approval no longer stands.
gitea.branch_with_file(
name, base="main", branch="m-2", path="b.txt", text="b\n", message="b"
)
second = gitea.open_pull_request(
name, head="m-2", base="main", title="b", body=""
)
approve(operator, name, second.number)
add_file(gitea, name, "m-2", "c.txt") # a fix pushed after the approval
after = gitea.pull_request(name, second.number).head_sha
assert not [
a
for a in gitea.approvals(name, second.number)
if a.commit == after and not a.stale
]
with pytest.raises(GiteaError):
gitea.merge_pull_request(name, second.number)