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import pytest
from pathlib import Path
import tempfile
from core.frontmatter import parse_frontmatter, write_frontmatter
SAMPLE_MD = """\
+++
title = "Test Article"
type = "Tech"
draft = false
tags = ["linux", "python"]
+++
# Body
Some content here.
"""
def test_parse_returns_frontmatter_dict(tmp_path):
f = tmp_path / "index.md"
f.write_text(SAMPLE_MD)
fm, body = parse_frontmatter(f)
assert fm["title"] == "Test Article"
assert fm["type"] == "Tech"
assert fm["draft"] is False
assert "linux" in fm["tags"]
def test_parse_returns_body(tmp_path):
f = tmp_path / "index.md"
f.write_text(SAMPLE_MD)
fm, body = parse_frontmatter(f)
assert "# Body" in body
assert "Some content here." in body
def test_write_preserves_format(tmp_path):
f = tmp_path / "index.md"
f.write_text(SAMPLE_MD)
fm, body = parse_frontmatter(f)
fm["title"] = "Updated Title"
write_frontmatter(f, fm, body)
fm2, _ = parse_frontmatter(f)
assert fm2["title"] == "Updated Title"
assert fm2["type"] == "Tech"
def test_parse_raises_on_missing_delimiters(tmp_path):
f = tmp_path / "index.md"
f.write_text("# No frontmatter\n\nJust body.")
with pytest.raises(ValueError, match="frontmatter"):
parse_frontmatter(f)
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