Initial deeply busted Lilith state for LangJam

projects/lilith/test/python/conftest.py

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+"""
+Pytest fixtures.
+"""

projects/lilith/test/python/test_parser.py

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+"""tests covering the Lilith parser."""
+
+from lilith.parser import block_grammar, Block
+
+import pytest
+
+@pytest.mark.parametrize('example, result', [
+    ('!def[syntax]',
+     Block('def', ['syntax'], None, [])),
+    ('!frag[lang: md]',
+     Block('frag', None, {'lang': 'md'}, [])),
+    ('!frag[foo, lang: md]',
+     Block('frag', ['foo'], {'lang': 'md'}, [])),
+])
+def test_parse_header(example, result):
+    assert block_grammar.parse(example) == result
+
+
+(
+    """!def[designdoc]
+!frag[lang: md]
+# Designdoc
+
+A design document""",
+     None
+)