lively.vm/tests/eval-support-test.js

Controlled JavaScript code execution and instrumentation.

/*global beforeEach, afterEach, describe, it*/

import { expect } from "mocha-es6";

import { stringify, parse } from "lively.ast";
import { evalCodeTransform } from "../lib/eval-support.js";

describe("eval code transform", function() {

  it("allows object expressions", () =>
    expect(evalCodeTransform("{x: 23}", {})).equals("({ x: 23 });"));

  it("allows function expressions", () =>
    expect(evalCodeTransform("function() {}", {})).equals("(function () {\n});"));

  it("does nothing without options", () =>
    expect(evalCodeTransform("3 + 4", {})).equals("3 + 4;"));

  it("captures toplevel vars", () =>
    expect(evalCodeTransform("const x = 23;", {topLevelVarRecorder: {}, varRecorderName: "__foo"}))
      .equals("__foo.x = 23;"));

  it("wraps in start end call", () =>
    expect(evalCodeTransform("var x = 23;", {wrapInStartEndCall: true}))
      .equals("try {\n"
            + "  __start_execution();\n"
            + "  var x = 23;\n"
            + "  __end_execution(null, x);\n"
            + "} catch (err) {\n"
            + "  __end_execution(err, undefined);\n"
            + "}"));

  it("start / end + capturing", () =>
    expect(evalCodeTransform("var x = 23;", {topLevelVarRecorder: {}, wrapInStartEndCall: true}))
      .equals("try {\n"
            + "  __start_execution();\n"
            + "  __end_execution(null, __lvVarRecorder.x = 23);\n"
            + "} catch (err) {\n"
            + "  __end_execution(err, undefined);\n"
            + "}"));
            
  it("source code and evalId passed into define", () =>
    expect(evalCodeTransform("var x = 23;", {
      evalId: "testEval",
      sourceAccessorName: "__source",
      declarationWrapper: {type: "Identifier", name: "__define"},
      topLevelVarRecorder: {}
    })).equals(`__lvVarRecorder.x = __define("x", "var", 23, __lvVarRecorder, {\n`
             + `  start: 4,\n`
             + `  end: 10,\n`
             + `  evalId: "testEval",\n`
             + `  moduleSource: __source\n`
             + `});`));

  it("allows for inline options", () =>
    expect(evalCodeTransform(`/*lively.vm varRecorderName:"foo"*/var x = 23;`, {
      topLevelVarRecorder: {}
    })).equals(`foo.x = 23;`));

  
});