code-wars-test-stubs.js

codewars-test-stubs.js

var Test = {
  describe: Test_describe,
  before: Test_before,
  expect: Test_expect,
  it: Test_it,
  context: Test_context,
  contexts: [],
  assertEquals: Test_assertEquals,
  logError: Test_logError,
  logSuccess: Test_logSuccess,
  currentIt: {
    label: 'No It',
    func: {
      toString: function() {}
    }
  }
}


//// Helpers


function Test_describe(label, func) {
  Test.contexts.push(new TestContext(label))

  Test_printLabel();

  func();

  Test.contexts.pop();
}

function Test_it(label, func) {
  Test.contexts.forEach(function(context) {
    context.runBefores();
  });

  Test.currentIt = {
    label,
    func
  };
  func.call(this);
  Test.currentIt = null;
}


function Test_before(func) {
  Test.context().addBefore(func);
}

function Test_context() {
  return Test.contexts[Test.contexts.length - 1]
}

function Test_printLabel() {

  var output = Test.contexts.map(function(context) {
    return context.label;
  }).join(" : ");

  console.log(output);
}

function Test_assertEquals(actual, expected, message) {

  if (actual === expected) {
    Test.logSuccess("OK   : " + (message || "No Description"));
    Test.logSuccess("GOT  : " + JSON.stringify(actual));
  } else {
    Test.logError('########################################');
    Test.logError("FAILED   : " + Test.currentIt.label || "No Label");
    Test.logError("FAILED   : " + (message || "No Description"));
    Test.logError("GOT      : " + JSON.stringify(actual));
    Test.logError("EXPECTED : " + JSON.stringify(expected));
    Test.logError(Test.currentIt.func.toString());
    Test.logError('########################################');
  }
}

function Test_expect(ok, message) {

  if (ok) {
    Test.logSuccess("OK : " + (message || "No Description"));
  } else {
    Test.logError('########################################');
    Test.logError("FAILED   : " + Test.currentIt.label || "No Label");
    Test.logError("FAILED   : " + (message || "No Description"));
    Test.logError(Test.currentIt.func.toString());
    Test.logError('########################################');
  }
}


function Test_logError(message) {
  console.log("\x1b[31m", message, "\x1b[0m");
}

function Test_logSuccess(message) {
  console.log("\x1b[32m", message, "\x1b[0m");
}

function TestContext(label) {
  return {
    label,
    befores: [],
    addBefore,
    runBefores
  };

  function addBefore(func) {
    this.befores.push(func);
  }

  function runBefores() {
    this.befores.forEach(function(before) {
      before.call(this);
    });
  }
}