Convert acceptance tests to use destroyApp().

Introduced in Ember CLI 1.13.9.

README.md

@@ -93,6 +93,11 @@ Converts methods in file to ES6 method syntax.
 
 Helps you locate all the places where your source may trigger the "Using the same function as getter and setter" deprecation.
 
+#### `ember watson:use-destroy-app-helper <path>`
+
+Convert (qunit or mocha flavored) acceptance tests to utilize the `destroyApp`
+helper [introduced](https://github.com/ember-cli/ember-cli/pull/4772) in
+Ember CLI 1.13.9.
 
 ### Specifying a file or path.
 

lib/cli.js

@@ -65,6 +65,13 @@ program
     watson.findOverloadedCPs(path).outputSummary(options.json ? 'json' : 'pretty');
   });
 
+program
+  .command('use-destroy-app-helper [path]')
+  .description('Use destroy-app helper after acceptance tests.')
+  .action(function(path) {
+    path = path || 'tests/acceptance';
+    watson.transformTestToUseDestroyApp(path);
+  });
 
 module.exports = function init(args) {
   program.parse(args);

lib/commands/index.js

@@ -7,5 +7,6 @@ module.exports = {
   'watson:convert-ember-data-async-false-relationships': require('./convert-ember-data-async-false-relationships'),
   'watson:methodify': require('./methodify'),
   'watson:convert-resource-router-mapping': require('./convert-resource-router-mapping'),
-  'watson:find-overloaded-cps': require('./find-overloaded-cps')
+  'watson:find-overloaded-cps': require('./find-overloaded-cps'),
+  'watson:use-destroy-app-helper': require('./use-destroy-app-helper')
 };

lib/commands/use-destroy-app-helper.js

@@ -0,0 +1,17 @@
+'use strict';
+
+var Watson = require('../../index');
+var watson = new Watson();
+
+module.exports = {
+  name: 'watson:use-destroy-app-helper',
+  description: 'Use destroy-app helper after acceptance tests.',
+  works: 'insideProject',
+  anonymousOptions: [
+    '<path>'
+  ],
+  run: function(commandOptions, rawArgs) {
+    var path = rawArgs[0] || 'tests/acceptance';
+    watson.transformTestToUseDestroyApp(path);
+  }
+};

lib/formulas/destroy-app-transform.js

@@ -0,0 +1,77 @@
+var isImportFor = require('./helpers/is-import-for');
+var parseAst    = require('../helpers/parse-ast');
+var recast      = require('recast');
+var types       = recast.types.namedTypes;
+var builders    = recast.types.builders;
+
+var addDefaultImport = require('./helpers/add-default-import');
+
+function isEmberCall(node) {
+  return types.MemberExpression.check(node.callee) &&
+    node.callee.object.name === 'Ember';
+}
+
+function isLegacyDestroy(node) {
+  return types.MemberExpression.check(node.callee) &&
+    node.callee.object.name === 'Ember' &&
+    node.callee.property.name === 'run' &&
+    node.arguments[1].value === 'destroy';
+}
+
+function isStartAppAssignment(node) {
+  return types.CallExpression.check(node.right) &&
+    node.right.callee.name === 'startApp';
+}
+
+module.exports = function transform(source) {
+  var ast = parseAst(source);
+  var appName             = null;
+  var addDestroyAppImport = false;
+  var removeEmberImport   = true;
+  var emberImport         = null;
+
+  recast.visit(ast, {
+    visitCallExpression: function(path) {
+      var node = path.node;
+
+      if(isLegacyDestroy(node)) {
+        if (addDestroyAppImport !== true) {
+          addDestroyAppImport = true;
+        }
+
+        path.replace(builders.callExpression(
+          builders.identifier('destroyApp'),
+          [appName]
+        ));
+      } else if (isEmberCall(node)) {
+        removeEmberImport = false;
+      }
+
+      this.traverse(path);
+    },
+    visitImportDeclaration: function(path) {
+      if (isImportFor('ember', path.node)) {
+        emberImport = path;
+      }
+
+      this.traverse(path);
+    },
+    visitAssignmentExpression: function(path) {
+      if (isStartAppAssignment(path.node)) {
+        appName = path.node.left;
+      }
+
+      this.traverse(path);
+    }
+  });
+
+  if (addDestroyAppImport) {
+    addDefaultImport(ast, '../helpers/destroy-app', 'destroyApp');
+  }
+
+  if (removeEmberImport && emberImport) {
+    emberImport.prune();
+  }
+
+  return recast.print(ast, { tabWidth: 2, quote: 'single' }).code;
+};

lib/watson.js

@@ -1,5 +1,7 @@
-var chalk     = require('chalk');
-var fs        = require('fs');
+var chalk      = require('chalk');
+var fs         = require('fs');
+var existsSync = require('exists-sync');
+var EOL        = require('os').EOL;
 
 var findFiles = require('./helpers/find-files');
 
@@ -10,6 +12,7 @@ var transformEmberDataAsyncFalseRelationships = require('./formulas/ember-data-a
 var transformResourceRouterMapping = require('./formulas/resource-router-mapping');
 var transformMethodify = require('./formulas/methodify');
 var FindOverloadedCPs = require('./formulas/find-overloaded-cps');
+var transformDestroyApp = require('./formulas/destroy-app-transform');
 
 module.exports = EmberWatson;
 
@@ -62,6 +65,28 @@ EmberWatson.prototype.transformResourceRouterMapping = function(routerPath) {
   transform([routerPath], this._transformResourceRouterMapping);
 };
 
+EmberWatson.prototype._transformDestroyApp = transformDestroyApp;
+
+EmberWatson.prototype.transformTestToUseDestroyApp = function(rootPath) {
+  if (!existsSync('tests/helpers/destroy-app.js')) {
+    console.log(
+      chalk.red('tests/helpers/destroy-app.js file is not present. ' +
+        'You must either manually place the file or upgrade to an ' +
+        'ember-cli version > 1.13.8.' + EOL +
+        'For more info, visit ' +
+        'https://gist.github.com/blimmer/35d3efbb64563029505a#create-your-own-destroy-app-helper'
+      )
+    );
+    return;
+  }
+
+  var tests  = findFiles(rootPath, '.js').filter(function(file){
+    return file.indexOf('-test.js') > 0;
+  });
+
+  transform(tests, this._transformDestroyApp);
+};
+
 EmberWatson.prototype.findOverloadedCPs = function(rootPath) {
   var searcher = new FindOverloadedCPs();
   transform(findFiles(rootPath, '.js'), function(source, filename) {

package.json

@@ -19,6 +19,7 @@
     "babel-core": "^5.8.22",
     "chalk": "^1.0.0",
     "commander": "^2.6.0",
+    "exists-sync": "0.0.3",
     "inflected": "^1.1.6",
     "recast": "^0.10.29",
     "walk-sync": "^0.1.3"

tests/cli-test.js

@@ -27,6 +27,10 @@ var commands = {
   'convert-resource-router-mapping': {
     method: 'transformResourceRouterMapping',
     path: 'app/router.js'
+  },
+  'use-destroy-app-helper': {
+    method: 'transformTestToUseDestroyApp',
+    path: 'tests/acceptance'
   }
 };
 

tests/commands-test.js

@@ -9,6 +9,7 @@ var transformPrototypeExtensionsCalledWith;
 var transformQUnitTestCalledWith;
 var transformResourceRouterMappingCalledWith;
 var transformMethodifyCalledWith;
+var transformTestToUseDestroyAppCalledWith;
 
 proxyquire('../lib/commands/convert-ember-data-model-lookups', {
   '../../index': Mock
@@ -34,6 +35,10 @@ proxyquire('../lib/commands/methodify', {
   '../../index': Mock
 });
 
+proxyquire('../lib/commands/use-destroy-app-helper', {
+  '../../index': Mock
+});
+
 function Mock() {}
 
 Mock.prototype.transformEmberDataModelLookups = function() {
@@ -60,6 +65,10 @@ Mock.prototype.transformMethodify = function () {
   transformMethodifyCalledWith = Array.prototype.slice.apply(arguments);
 };
 
+Mock.prototype.transformTestToUseDestroyApp = function() {
+  transformTestToUseDestroyAppCalledWith = Array.prototype.slice.apply(arguments);
+};
+
 describe('Commands:', function () {
 
   afterEach(function () {
@@ -69,6 +78,7 @@ describe('Commands:', function () {
     transformQUnitTestCalledWith = null;
     transformResourceRouterMappingCalledWith = null;
     transformMethodifyCalledWith = null;
+    transformTestToUseDestroyAppCalledWith = null;
   });
 
   it('convert-ember-data-model-lookups calls the correct transform', function () {
@@ -136,4 +146,14 @@ describe('Commands:', function () {
     Command.run({}, ['some-app']);
     assert.deepEqual(transformMethodifyCalledWith, ['some-app']);
   });
+
+  it('methodify calls the correct transform', function () {
+    var Command = require('../lib/commands/use-destroy-app-helper');
+
+    Command.run({}, []);
+    assert.deepEqual(transformTestToUseDestroyAppCalledWith, ['tests/acceptance']);
+
+    Command.run({}, ['tests/my-crazy-other-thing']);
+    assert.deepEqual(transformTestToUseDestroyAppCalledWith, ['tests/my-crazy-other-thing']);
+  });
 });

tests/destroy-app-transformation-test.js

@@ -0,0 +1,54 @@
+var Watson = require('../index.js');
+var fs = require('fs');
+var astEquality = require('./helpers/ast-equality');
+var recast = require('recast');
+
+describe('convert acceptance tests to use destroy-app helper', function() {
+  it('makes the correct transformations - qunit', function() {
+    var source = fs.readFileSync('./tests/fixtures/destroy-app-transform/old-default-qunit.js');
+    var watson = new Watson();
+    var newSource = watson._transformDestroyApp(source);
+
+    astEquality(newSource, fs.readFileSync('./tests/fixtures/destroy-app-transform/new-default-qunit.js'));
+  });
+
+  it('makes the correct transformations - mocha', function() {
+    var source = fs.readFileSync('./tests/fixtures/destroy-app-transform/old-default-mocha.js');
+    var watson = new Watson();
+    var newSource = watson._transformDestroyApp(source);
+
+    astEquality(newSource, fs.readFileSync('./tests/fixtures/destroy-app-transform/new-default-mocha.js'));
+  });
+
+  it('does not remove ember import if otherwise used in test - qunit', function() {
+    var source = fs.readFileSync('./tests/fixtures/destroy-app-transform/old-with-ember-usage-qunit.js');
+    var watson = new Watson();
+    var newSource = watson._transformDestroyApp(source);
+
+    astEquality(newSource, fs.readFileSync('./tests/fixtures/destroy-app-transform/new-with-ember-usage-qunit.js'));
+  });
+
+  it('does not remove ember import if otherwise used in test - mocha', function() {
+    var source = fs.readFileSync('./tests/fixtures/destroy-app-transform/old-with-ember-usage-mocha.js');
+    var watson = new Watson();
+    var newSource = watson._transformDestroyApp(source);
+
+    astEquality(newSource, fs.readFileSync('./tests/fixtures/destroy-app-transform/new-with-ember-usage-mocha.js'));
+  });
+
+  it('can handle a non-standard application name - qunit', function() {
+    var source = fs.readFileSync('./tests/fixtures/destroy-app-transform/old-crazy-app-name-qunit.js');
+    var watson = new Watson();
+    var newSource = watson._transformDestroyApp(source);
+
+    astEquality(newSource, fs.readFileSync('./tests/fixtures/destroy-app-transform/new-crazy-app-name-qunit.js'));
+  });
+
+  it('can handle a non-standard application name - mocha', function() {
+    var source = fs.readFileSync('./tests/fixtures/destroy-app-transform/old-crazy-app-name-mocha.js');
+    var watson = new Watson();
+    var newSource = watson._transformDestroyApp(source);
+
+    astEquality(newSource, fs.readFileSync('./tests/fixtures/destroy-app-transform/new-crazy-app-name-mocha.js'));
+  });
+});

tests/fixtures/destroy-app-transform/new-crazy-app-name-mocha.js

@@ -0,0 +1,30 @@
+import destroyApp from '../helpers/destroy-app';
+/* jshint expr:true */
+import {
+  describe,
+  it,
+  beforeEach,
+  afterEach
+} from 'mocha';
+import { expect } from 'chai';
+import startApp from '../helpers/start-app';
+
+describe('Acceptance: Index', function() {
+  var cahRayZeeName;
+
+  beforeEach(function() {
+    cahRayZeeName = startApp();
+  });
+
+  afterEach(function() {
+    destroyApp(cahRayZeeName);
+  });
+
+  it('can visit /index', function() {
+    visit('/index');
+
+    andThen(function() {
+      expect(currentPath()).to.equal('index');
+    });
+  });
+});

tests/fixtures/destroy-app-transform/new-crazy-app-name-qunit.js

@@ -0,0 +1,21 @@
+import destroyApp from '../helpers/destroy-app';
+import { module, test } from 'qunit';
+import startApp from 'ember-cli-example-app-for-github/tests/helpers/start-app';
+
+module('Acceptance | index', {
+  beforeEach: function() {
+    this.fooBarBazQux = startApp();
+  },
+
+  afterEach: function() {
+    destroyApp(this.fooBarBazQux);
+  }
+});
+
+test('visiting /index', function(assert) {
+  visit('/index');
+
+  andThen(function() {
+    assert.equal(currentURL(), '/index');
+  });
+});

tests/fixtures/destroy-app-transform/new-default-mocha.js

@@ -0,0 +1,30 @@
+import destroyApp from '../helpers/destroy-app';
+/* jshint expr:true */
+import {
+  describe,
+  it,
+  beforeEach,
+  afterEach
+} from 'mocha';
+import { expect } from 'chai';
+import startApp from '../helpers/start-app';
+
+describe('Acceptance: Index', function() {
+  var application;
+
+  beforeEach(function() {
+    application = startApp();
+  });
+
+  afterEach(function() {
+    destroyApp(application);
+  });
+
+  it('can visit /index', function() {
+    visit('/index');
+
+    andThen(function() {
+      expect(currentPath()).to.equal('index');
+    });
+  });
+});