drop-index command and table.drop_index(index_name)

Closes #626

tests/test_cli.py

@@ -291,6 +291,24 @@ def test_create_index(db_path):
         )
 
 
+def test_drop_index(db_path):
+    db = Database(db_path)
+    db["Gosh"].create_index(["c1"])
+    assert [index.name for index in db["Gosh"].indexes] == ["idx_Gosh_c1"]
+    result = CliRunner().invoke(cli.cli, ["drop-index", db_path, "Gosh", "idx_Gosh_c1"])
+    assert result.exit_code == 0
+    assert db["Gosh"].indexes == []
+
+    result = CliRunner().invoke(cli.cli, ["drop-index", db_path, "Gosh", "idx_Gosh_c1"])
+    assert result.exit_code == 1
+    assert "No index named idx_Gosh_c1" in result.output
+
+    result = CliRunner().invoke(
+        cli.cli, ["drop-index", db_path, "Gosh", "idx_Gosh_c1", "--ignore"]
+    )
+    assert result.exit_code == 0
+
+
 def test_create_index_analyze(db_path):
     db = Database(db_path)
     assert "sqlite_stat1" not in db.table_names()

tests/test_create.py

@@ -809,6 +809,34 @@ def test_create_index_if_not_exists(fresh_db):
     dogs.create_index(["name"], if_not_exists=True)
 
 
+def test_drop_index(fresh_db):
+    dogs = fresh_db["dogs"]
+    dogs.insert({"name": "Cleo", "twitter": "cleopaws", "age": 3, "is_good_dog": True})
+    dogs.create_index(["name"])
+    assert [index.name for index in dogs.indexes] == ["idx_dogs_name"]
+    dogs.drop_index("idx_dogs_name")
+    assert dogs.indexes == []
+
+
+def test_drop_index_ignore(fresh_db):
+    dogs = fresh_db["dogs"]
+    dogs.insert({"name": "Cleo"})
+    with pytest.raises(OperationalError, match="No index named idx_dogs_name"):
+        dogs.drop_index("idx_dogs_name")
+    dogs.drop_index("idx_dogs_name", ignore=True)
+
+
+def test_drop_index_wrong_table(fresh_db):
+    dogs = fresh_db["dogs"]
+    cats = fresh_db["cats"]
+    dogs.insert({"name": "Cleo"})
+    cats.insert({"name": "Misty"})
+    dogs.create_index(["name"])
+    with pytest.raises(OperationalError, match="No index named idx_dogs_name"):
+        cats.drop_index("idx_dogs_name")
+    assert [index.name for index in dogs.indexes] == ["idx_dogs_name"]
+
+
 def test_create_index_desc(fresh_db):
     dogs = fresh_db["dogs"]
     dogs.insert({"name": "Cleo", "twitter": "cleopaws", "age": 3, "is good dog": True})