diff --git a/tests/test_data_account_meta.py b/tests/test_data_account_meta.py
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+++ b/tests/test_data_account_meta.py
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+"""Test AccountMeta class"""
+# Copyright © 2020  Brett Smith
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import itertools
+import pytest
+
+from datetime import date as Date
+
+from beancount.core.data import Open, Close, Booking
+
+from conservancy_beancount import data
+
+def test_attributes():
+    open_date = Date(2019, 6, 1)
+    name = 'Assets:Bank:Checking'
+    currencies = ['USD', 'EUR']
+    booking = Booking.STRICT
+    actual = data.AccountMeta(Open({}, open_date, name, list(currencies), booking))
+    assert actual.open_date == open_date
+    assert actual.account == name
+    assert isinstance(actual.account, data.Account)
+    assert actual.currencies == currencies
+    assert actual.booking == booking
+
+def test_mapping():
+    src_meta = {'filename': 'maptest', 'lineno': 10}
+    actual = data.AccountMeta(Open(
+        src_meta.copy(), Date(2019, 6, 1), 'Income:Donations', None, None,
+    ))
+    assert len(actual) == 2
+    assert set(actual) == set(src_meta)  # Test __iter__
+    for key, expected in src_meta.items():
+        assert actual[key] == expected
+
+def test_close_attributes_without_closing():
+    actual = data.AccountMeta(Open(
+        {}, Date(2019, 6, 1), 'Assets:Cash', None, None,
+    ))
+    assert actual.close_date is None
+    assert actual.close_meta is None
+
+def test_close_at_init():
+    src_meta = {'filename': 'initclose', 'lineno': 50}
+    close_date = Date(2020, 6, 1)
+    name = 'Assets:Bank:MoneyMarket'
+    actual = data.AccountMeta(
+        Open({}, Date(2019, 6, 1), name, None, None),
+        Close(src_meta.copy(), close_date, name),
+    )
+    assert actual.close_date == close_date
+    assert actual.close_meta == src_meta
+
+def test_add_closing():
+    src_meta = {'filename': 'laterclose', 'lineno': 65}
+    close_date = Date(2020, 1, 1)
+    name = 'Assets:Bank:EUR'
+    actual = data.AccountMeta(Open({}, Date(2019, 6, 1), name, None, None))
+    assert actual.close_date is None
+    assert actual.close_meta is None
+    actual.add_closing(Close(src_meta.copy(), close_date, name))
+    assert actual.close_date == close_date
+    assert actual.close_meta == src_meta
+
+def test_add_closing_already_inited():
+    name = 'Assets:Bank:Savings'
+    actual = data.AccountMeta(
+        Open({}, Date(2019, 6, 1), name, None, None),
+        Close({}, Date(2019, 7, 1), name),
+    )
+    with pytest.raises(ValueError):
+        actual.add_closing(Close({}, Date(2019, 8, 1), name))
+
+def test_add_closing_called_twice():
+    name = 'Assets:Bank:FX'
+    actual = data.AccountMeta(Open({}, Date(2019, 6, 1), name, None, None))
+    actual.add_closing(Close({}, Date(2019, 7, 1), name))
+    with pytest.raises(ValueError):
+        actual.add_closing(Close({}, Date(2019, 8, 1), name))
+
+@pytest.mark.parametrize('close_date,close_name', [
+    (Date(2020, 6, 1), 'Income:Grants'),  # Account name doesn't match
+    (Date(2010, 6, 1), 'Income:Donations'),  # Close predates Open
+])
+def test_bad_closing_at_init(close_date, close_name):
+    with pytest.raises(ValueError):
+        data.AccountMeta(
+            Open({}, Date(2019, 6, 1), 'Income:Donations', None, None),
+            Close({}, close_date, close_name),
+        )
+
+@pytest.mark.parametrize('close_date,close_name', [
+    (Date(2020, 6, 1), 'Income:Grants'),  # Account name doesn't match
+    (Date(2010, 6, 1), 'Income:Donations'),  # Close predates Open
+])
+def test_add_closing_wrong_account(close_date, close_name):
+    actual = data.AccountMeta(
+        Open({}, Date(2019, 6, 1), 'Income:Donations', None, None),
+    )
+    with pytest.raises(ValueError):
+        actual.add_closing(Close({}, close_date, close_name))