arepl-backend/pythonExecutors.test.js

JS interface to python evaluator for AREPL

"use strict";
/*global suite, test*/ //comment for eslint
Object.defineProperty(exports, "__esModule", { value: true });
// This test uses TDD Mocha. see https://mochajs.org/ for help
// http://ricostacruz.com/cheatsheets/mocha-tdd
// The module 'assert' provides assertion methods from node
const assert = require("assert");
const pythonExecutors_1 = require("./pythonExecutors");
suite("PythonExecutors", () => {
    let pyExecutors = new pythonExecutors_1.PythonExecutors();
    let input = {
        evalCode: "",
        filePath: "",
        usePreviousVariables: false,
        show_global_vars: true,
        default_filter_vars: [],
        default_filter_types: ["<class 'module'>", "<class 'function'>"]
    };
    const pythonStartupTime = 3000;
    const num_executors = 2;
    suiteSetup(function () {
        this.timeout(pythonStartupTime + 500);
    });
    setup(function (done) {
        pyExecutors.onPrint = () => { };
        pyExecutors.onStderr = () => { };
        pyExecutors.onResult = () => { };
        pyExecutors.start(num_executors);
        done();
    });
    teardown(function () {
        pyExecutors.stop(true);
    });
    test("can do multiple executions", function (done) {
        // we do three test runs because given that only two executors exist:
        // if first fails: something is wrong with first executor
        // if second fails: something is wrong with second executor
        // if thid fails: logic that waits for a executor to become free is broken
        let num_results = 0;
        pyExecutors.onResult = (result) => {
            num_results += 1;
            if (num_results == 1) {
                assert.strictEqual(result.userVariables['x'], 1);
                input.evalCode = "x=2";
                pyExecutors.execCode(input);
            }
            else if (num_results == 2) {
                assert.strictEqual(result.userVariables['x'], 2);
                input.evalCode = "x=3";
                pyExecutors.execCode(input);
            }
            else if (num_results > num_executors) {
                assert.strictEqual(result.userVariables['x'], 3);
                done();
            }
        };
        input.evalCode = "x=1";
        pyExecutors.execCode(input);
    });
    test("last execution takes precedence", function (done) {
        pyExecutors.onResult = (result) => {
            assert.strictEqual(result.userVariables['x'], 2);
            done();
        };
        input.evalCode = "x=1";
        pyExecutors.execCode(input);
        input.evalCode = "x=2";
        pyExecutors.execCode(input);
    });
});
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