             "SELECT * FROM \"readers\" WHERE -((-\"age\") + 1)")
     }
     
-    func testInfixMinusOperator() throws {
+    func testInfixSubtractOperator() throws {
         let dbQueue = try makeDatabaseQueue()
         
         XCTAssertEqual(

        XCTAssertEqual(
            sql(dbQueue, tableRequest.filter(2 * (Col.age * Col.age))),
            "SELECT * FROM \"readers\" WHERE 2 * (\"age\" * \"age\")")
    }
    
    func testInfixDivideOperator() throws {

            "SELECT * FROM \"readers\" WHERE 1 - ((\"age\" > 1) AND (\"age\" IS NULL))")
    }
    
    func testInfixAddOperator() throws {
        let dbQueue = try makeDatabaseQueue()
        
        XCTAssertEqual(
