should be it

external/duckdb/tools/swift/duckdb-swift/Tests/DuckDBTests/DecimalUtilityTests.swift

@@ -0,0 +1,52 @@
+//
+//  DuckDB
+//  https://github.com/duckdb/duckdb-swift
+//
+//  Copyright © 2018-2024 Stichting DuckDB Foundation
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to
+//  deal in the Software without restriction, including without limitation the
+//  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+//  sell copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+//  IN THE SOFTWARE.
+
+
+import Foundation
+import XCTest
+@testable import DuckDB
+
+final class DecimalUtilityTests: XCTestCase {
+  
+  func test_decimal_int_huge_min() throws {
+    let minInt128 = Decimal(string: "\(IntHuge.min)")!
+    XCTAssertEqual(Decimal(IntHuge.min), minInt128)
+  }
+  
+  func test_decimal_int_huge_max() throws {
+    let maxInt128 = Decimal(string: "\(IntHuge.max)")!
+    XCTAssertEqual(Decimal(IntHuge.max), maxInt128)
+  }
+  
+  func test_decimal_uint_huge_min() throws {
+    let minUInt128 = Decimal(string: "\(UIntHuge.min)")!
+    XCTAssertEqual(Decimal(UIntHuge.min), minUInt128)
+  }
+  
+  func test_decimal_uint_huge_max() throws {
+    let maxUInt128 = Decimal(string: "\(UIntHuge.max)")!
+    XCTAssertEqual(Decimal(UIntHuge.max), maxUInt128)
+  }
+}
+