feat(tests): create a basic test for the loader

Author: Nikita Korotkih

.gitignore

@@ -5,3 +5,4 @@ dist.babel
 tscommand
 npm-debug.log
 .awcache
+test/output

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "grunt": "grunt",
     "prepublish": "grunt",
-    "babel": "babel dist --presets es2015 --out-dir dist.babel --watch"
+    "babel": "babel dist --presets es2015 --out-dir dist.babel --watch",
+    "test": "mocha"
   },
   "author": "Stanislav Panferov <fnight.m@gmail.com> (http://panferov.me/)",
   "repository": {
@@ -38,9 +39,11 @@
     "tsconfig": "^2.1.1"
   },
   "devDependencies": {
+    "babel-cli": "^6.3.17",
     "babel-preset-es2015": "^6.1.2",
     "babel-preset-es2015-node4": "^1.0.0",
     "babel-preset-stage-2": "^6.1.2",
+    "expect": "^1.13.4",
     "git-hooks": "0.0.10",
     "grunt": "^0.4.5",
     "grunt-bump": "^0.3.1",
@@ -51,6 +54,9 @@
     "grunt-shell": "^1.1.2",
     "grunt-ts": "^3.0.0",
     "load-grunt-tasks": "^0.6.0",
+    "mkdirp": "^0.5.1",
+    "mocha": "^2.3.4",
+    "rimraf": "^2.5.0",
     "typescript": "^1.8.0-dev.20151202"
   }
 }

test/fixtures/basic.ts

@@ -0,0 +1,5 @@
+class HiThere {
+    constructor(a: number, b: string) {
+        let t = a + b;
+    }
+}

test/fixtures/basic.tsx

@@ -0,0 +1,5 @@
+class Component {
+    render() {
+        return <div>hi there</div>;
+    }
+}

test/fixtures/tsconfig.json

@@ -0,0 +1,18 @@
+{
+    "compilerOptions": {
+        "target": "es6",
+        "declaration": false,
+        "noImplicitAny": false,
+        "removeComments": true,
+        "jsx": "react",
+        "noLib": false,
+        "preserveConstEnums": true,
+        "experimentalDecorators": true,
+        "suppressImplicitAnyIndexErrors": true,
+        "experimentalAsyncFunctions": true
+    },
+    "exclude": [
+        "node_modules",
+        "bower_components"
+    ]
+}

test/fixtures/with-type-errors.ts

@@ -0,0 +1,7 @@
+class IamAClass {
+    constructor(a: number) {
+        this.doSomething(a);
+    }
+
+    doSomething(c: boolean) {}
+}

test/index.js

@@ -0,0 +1,108 @@
+var webpack = require('webpack');
+var path = require('path');
+var mkdirp = require('mkdirp');
+var rimraf = require('rimraf');
+var expect = require('expect');
+
+var outputDir = path.resolve(__dirname, './output/');
+var loader = path.resolve(__dirname, '../dist.babel');
+var fs = require('fs');
+var Promise = require('bluebird');
+var readFile = Promise.promisify(fs.readFile);
+
+var globalConfig = {
+    module: {
+        loaders: [
+            {
+                test: /\.ts?/,
+                loader: loader + '?-doTypeCheck',
+            },
+        ],
+    }
+};
+
+describe('main test', function() {
+    beforeEach(function(done) {
+        rimraf(outputDir, function(err) {
+            if (err) { return done(err); }
+            mkdirp(outputDir, done);
+        });
+    });
+
+    it('should be ok', function(done) {
+        var filename = 'basic.js';
+        var outputFile = path.resolve(outputDir, filename);
+        var config =  {
+            output: {
+                path: outputDir,
+                filename: filename,
+            },
+            entry: './test/fixtures/basic.ts',
+        };
+        var testStringParts = [
+            'var HiThere = (function () {',
+            'function HiThere(a, b) {',
+            'var t = a + b;',
+            'return HiThere;'
+        ];
+
+        webpack(Object.assign(globalConfig, config), function(err, stats) {
+            expect(err).toNotExist();
+            expect(stats.compilation.errors.length).toBe(0);
+            readFile(outputFile).then(function(data) {
+                var res = data.toString();
+                testStringParts.forEach(function(p) {
+                    expect(res.indexOf(p)).toNotEqual(-1);
+                });
+                done();
+            });
+        });
+    });
+
+    it('should check typing', function(done) {
+        var config = {
+            entry: './test/fixtures/with-type-errors.ts',
+            module: {
+                loaders: [
+                    {
+                        test: /\.ts?/,
+                        loader: loader + '?doTypeCheck',
+                    },
+                ],
+            }
+        };
+
+        webpack(config, function(err, stats) {
+            expect(stats.compilation.errors).toExist();
+            done();
+        });
+    });
+
+    it('should load tsx files and use tsconfig', function(done) {
+        var tsConfig = path.resolve(__dirname, 'fixtures/tsconfig.json');
+        var outputFilename = 'basic.jsx';
+        var config = {
+            entry: './test/fixtures/basic.tsx',
+            module: {
+                loaders: [
+                    {
+                        test: /\.tsx?/,
+                        loader: loader + `?tsconfig=${tsConfig}`
+                    },
+                ],
+            },
+            output: {
+                path: outputDir,
+                filename: 'basic.jsx',
+            },
+        };
+
+        webpack(config, function(err, stats) {
+            readFile(path.resolve(outputDir, outputFilename)).then(function(res) {
+                var testString = 'return React.createElement("div", null, "hi there");';
+                expect(res.toString().indexOf(testString)).toNotEqual(-1);
+                done();
+            });
+        });
+    });
+});