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table.xindexes property plus improved introspection documentation, closes #261

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Simon Willison 2021-06-02 20:51:27 -07:00
commit 9c67cb9252
3 changed files with 148 additions and 6 deletions
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29
tests/test_introspect.py
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@ -1,4 +1,4 @@
from sqlite_utils.db import Index, View, Database
from sqlite_utils.db import Index, View, Database, XIndex, XIndexColumn
import pytest
@ -93,6 +93,33 @@ def test_indexes(fresh_db):
] == fresh_db["Gosh"].indexes
def test_xindexes(fresh_db):
fresh_db.executescript(
"""
create table Gosh (c1 text, c2 text, c3 text);
create index Gosh_c1 on Gosh(c1);
create index Gosh_c2c3 on Gosh(c2, c3 desc);
"""
)
assert fresh_db["Gosh"].xindexes == [
XIndex(
name="Gosh_c2c3",
columns=[
XIndexColumn(seqno=0, cid=1, name="c2", desc=0, coll="BINARY", key=1),
XIndexColumn(seqno=1, cid=2, name="c3", desc=1, coll="BINARY", key=1),
XIndexColumn(seqno=2, cid=-1, name=None, desc=0, coll="BINARY", key=0),
],
),
XIndex(
name="Gosh_c1",
columns=[
XIndexColumn(seqno=0, cid=0, name="c1", desc=0, coll="BINARY", key=1),
XIndexColumn(seqno=1, cid=-1, name=None, desc=0, coll="BINARY", key=0),
],
),
]
@pytest.mark.parametrize(
"column,expected_table_guess",
(