chore: move duckdb sqlite import test to code instead of ci

Author: cpcloud

.github/workflows/ibis-main.yml

@@ -107,24 +107,6 @@ jobs:
           flags: core,${{ runner.os }},python-${{ steps.install_python.outputs.python-version }}
           token: ${{ secrets.CODECOV_TOKEN }}
 
-  test_duckdb_sqlite3_import:
-    name: Test sqlite3 and duckdb import
-    runs-on: ubuntu-latest
-    steps:
-      - name: checkout
-        uses: actions/checkout@v5
-
-      - name: install python
-        uses: actions/setup-python@v6
-        with:
-          python-version: "3.13"
-
-      - name: install uv
-        uses: astral-sh/[email protected]
-
-      - name: check duckdb doesn't import sqlite3
-        run: uv run --extra duckdb python -c 'import sys, ibis; assert "sqlite3" not in sys.modules; ibis.duckdb.connect(); assert "sqlite3" not in sys.modules'
-
   test_scrapy_import:
     name: Test import with twisted
     runs-on: ubuntu-latest

ibis/backends/duckdb/tests/test_client.py

@@ -518,3 +518,16 @@ def test_basic_enum_schema_inference(con, converter):
     t = con.table(name)
     assert t.e.type() == dt.string
     assert set(converter(t.e)) == {"a", "b"}
+
+
+@pytest.mark.parametrize(
+    "line", ["", """ibis.duckdb.connect()"""], ids=["none", "duckdb"]
+)
+def test_duckdb_doesnt_import_sqlite(line):
+    code = f"""\
+import sys
+import ibis
+
+{line}
+assert "sqlite3" not in sys.modules"""
+    subprocess.run([sys.executable, "-c", code], check=True)