def test_insert_metadata_in_file(tmpdir):
file_content = dedent("""
2016-02-26 * "Uncle Boons" "Eating out alone"
Liabilities:US:Chase:Slate -24.84 USD
Expenses:Food:Restaurant 24.84 USD
""")
samplefile = tmpdir.mkdir('fava_util_file').join('example.beancount')
samplefile.write(file_content)
assert samplefile.read() == dedent(file_content)
assert len(tmpdir.listdir()) == 1
insert_metadata_in_file(str(samplefile), 1, 'metadata', 'test1')
assert samplefile.read() == dedent("""
2016-02-26 * "Uncle Boons" "Eating out alone"
metadata: "test1"
Liabilities:US:Chase:Slate -24.84 USD
Expenses:Food:Restaurant 24.84 USD
""")
insert_metadata_in_file(str(samplefile), 1, 'metadata', 'test2')
assert samplefile.read() == dedent("""
2016-02-26 * "Uncle Boons" "Eating out alone"
metadata: "test2"
metadata: "test1"
Liabilities:US:Chase:Slate -24.84 USD
Expenses:Food:Restaurant 24.84 USD
""")
def insert_metadata(self, filename, lineno, basekey, value):
"""Insert metadata into a file at lineno.
Also, prevent duplicate keys.
"""
entry = entry_at_lineno(self.entries, filename, lineno, Transaction)
key = next_key(basekey, entry.meta)
insert_metadata_in_file(filename, lineno - 1, key, value)
