ladder-logic/test.js

Ladder Logic Compiler for node.js and the web

/*
 * Copyright (c) 2014 Christopher M. Baker
 *
 * 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.
 *
 */

var ll = require("./");

function assert(evaluated, expected) {
    expected = JSON.stringify(expected, null, " ");
    evaluated = JSON.stringify(evaluated, null, " ");

    if (expected != evaluated) {
        throw new Error("Assertion failed:\n" +
            "Expected:  " + expected + "\n" +
            "Evaluated: " + evaluated);
    }
}

function run(schematic) {
    var program = ll.compile(schematic);
    return assert(schematic, ll.decompile(program));
}

run("||                                                 ||\n" +
    "||--[/ESTOP]----[/STOP]----+--[START]--+----(RUN)--||\n" +
    "||                         |           |           ||\n" +
    "||                         +--[RUN]----+           ||\n" +
    "||                                                 ||\n" +
    "||--[RUN]----(MOTOR)-------------------------------||\n" +
    "||                                                 ||");

run("||                                                 ||\n" +
    "||--[/ESTOP]----[/STOP]----+--[START]--+----(RUN)--||\n" +
    "||                         |           |           ||\n" +
    "||                         +--[RUN]----+           ||\n" +
    "||                         |           |           ||\n" +
    "||                         +--[ALT]----+           ||\n" +
    "||                                                 ||\n" +
    "||--[RUN]----(MOTOR)-------------------------------||\n" +
    "||                                                 ||");