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test_flatten_agents.py -- Regression tests for the nested-agent promoter.
The /agents Library only auto-discovers top-level .md files. flatten_agents.py
walks nested category subdirs and copies real agents (YAML frontmatter with
name:) to top-level siblings, leaving reference notes alone.
"""
from __future__ import annotations
from pathlib import Path
import pytest
import flatten_agents
@pytest.fixture()
def agents_tree(tmp_path: Path) -> Path:
root = tmp_path / "agents"
# Real agent nested under a category folder.
nested_agent = root / "design" / "design-brand-guardian.md"
nested_agent.parent.mkdir(parents=True)
nested_agent.write_text(
"---\nname: Brand Guardian\ndescription: x\n---\n\n# Brand Guardian\n",
encoding="utf-8",
)
# Real agent nested without the prefix convention.
bare = root / "game-development" / "level-designer.md"
bare.parent.mkdir(parents=True)
bare.write_text(
"---\nname: Level Designer\n---\n\n# Level Designer\n",
encoding="utf-8",
)
# Reference note — no frontmatter. Must be skipped.
ref = root / "skill-router" / "check-gates.md"
ref.parent.mkdir(parents=True)
ref.write_text("# Check Gates — skill-router\n\nJust a note.\n", encoding="utf-8")
# Existing top-level agent (already discoverable).
(root / "already-top.md").write_text(
"---\nname: Already\n---\n\n# Already\n",
encoding="utf-8",
)
return root
def test_dry_run_produces_plan_but_no_files(agents_tree):
plan, warnings = flatten_agents.plan_flatten(agents_tree)
names = {dst.name for _, dst in plan}
assert names == {"design-brand-guardian.md", "level-designer.md"}
assert warnings == []
# Top-level copies do NOT exist yet.
assert not (agents_tree / "design-brand-guardian.md").exists()
def test_apply_promotes_nested_agents_to_top_level(agents_tree):
plan, _ = flatten_agents.plan_flatten(agents_tree)
copied = flatten_agents.apply_plan(plan, verbose=False)
assert copied == 2
assert (agents_tree / "design-brand-guardian.md").exists()
assert (agents_tree / "level-designer.md").exists()
# Originals untouched.
assert (agents_tree / "design" / "design-brand-guardian.md").exists()
def test_reference_notes_are_skipped(agents_tree):
plan, _ = flatten_agents.plan_flatten(agents_tree)
# check-gates.md has no frontmatter — never in the plan.
srcs = {src.name for src, _ in plan}
assert "check-gates.md" not in srcs
def test_collision_with_identical_content_is_silent(agents_tree):
# Pre-create a sibling with identical content.
nested = agents_tree / "design" / "design-brand-guardian.md"
(agents_tree / "design-brand-guardian.md").write_bytes(nested.read_bytes())
plan, warnings = flatten_agents.plan_flatten(agents_tree)
srcs = {src.name for src, _ in plan}
assert "design-brand-guardian.md" not in srcs
assert warnings == []
def test_collision_with_different_content_warns(agents_tree):
(agents_tree / "design-brand-guardian.md").write_text(
"---\nname: Different\n---\n",
encoding="utf-8",
)
plan, warnings = flatten_agents.plan_flatten(agents_tree)
assert any("collision" in w for w in warnings)
def test_has_name_frontmatter_detects_real_agents(tmp_path):
agent = tmp_path / "agent.md"
agent.write_text("---\nname: X\n---\n", encoding="utf-8")
assert flatten_agents.has_name_frontmatter(agent) is True
def test_has_name_frontmatter_rejects_notes(tmp_path):
note = tmp_path / "note.md"
note.write_text("# No frontmatter here\n", encoding="utf-8")
assert flatten_agents.has_name_frontmatter(note) is False
def test_has_name_frontmatter_rejects_frontmatter_without_name(tmp_path):
stub = tmp_path / "stub.md"
stub.write_text("---\ntype: reference\n---\n", encoding="utf-8")
assert flatten_agents.has_name_frontmatter(stub) is False
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