luminate/Tests/LuminateStoreTests/SQLiteStatementTests.swift

96 lines
3.5 KiB
Swift

//
// SQLiteStatementTests.swift
//
// Copyright 2026 Brendan Szymanski <hello@bscubed.dev>
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
import Foundation
import Testing
@testable import LuminateCore
@testable import LuminateStore
@Suite struct SQLiteStatementTests {
@Test("Preparing malformed SQL fails with a non-empty diagnostic")
func prepareFailureReportsDiagnostic() throws {
let (url, directory) = makeDatabaseURL()
defer { try? FileManager.default.removeItem(at: directory) }
let database = try SQLiteDatabase(url: url)
#expect(throws: PreferenceStoreError.self) {
_ = try SQLiteStatement(database: database, sql: "NOT SQL")
}
do {
_ = try SQLiteStatement(database: database, sql: "NOT SQL")
Issue.record("Expected malformed SQL to throw")
} catch let error as PreferenceStoreError {
if case .sqlite(let message) = error {
#expect(!message.isEmpty)
} else {
Issue.record("Expected .sqlite, got \(error)")
}
}
}
@Test("Binding past the parameter count fails")
func bindOutOfRangeFails() throws {
let (url, directory) = makeDatabaseURL()
defer { try? FileManager.default.removeItem(at: directory) }
let database = try SQLiteDatabase(url: url)
let statement = try SQLiteStatement(database: database, sql: "SELECT ?1;")
#expect(throws: PreferenceStoreError.self) {
try statement.bind(99, text: "x")
}
}
@Test("A constraint violation on step fails")
func stepConstraintViolationFails() throws {
let (url, directory) = makeDatabaseURL()
defer { try? FileManager.default.removeItem(at: directory) }
let database = try SQLiteDatabase(url: url)
try database.exec("CREATE TABLE t (id INTEGER PRIMARY KEY, v TEXT NOT NULL);")
let statement = try SQLiteStatement(database: database, sql: "INSERT INTO t (v) VALUES (NULL);")
#expect(throws: PreferenceStoreError.self) {
_ = try statement.step()
}
}
@Test("A NULL result column decodes as nil")
func nullColumnDecodesAsNil() throws {
let (url, directory) = makeDatabaseURL()
defer { try? FileManager.default.removeItem(at: directory) }
let database = try SQLiteDatabase(url: url)
let statement = try SQLiteStatement(database: database, sql: "SELECT NULL;")
_ = try statement.step()
#expect(statement.preference(at: 0) == nil)
}
private func makeDatabaseURL() -> (URL, URL) {
let directory = FileManager.default.temporaryDirectory
.appending(path: "luminate-store-\(UUID().uuidString)", directoryHint: .isDirectory)
return (directory.appending(path: "preferences.sqlite"), directory)
}
}