test(elm-app test): Add tests for 'elm-app test' command

tests/cliAccessibility.js

@@ -11,19 +11,19 @@ describe('Test command line interface functionality', function () {
 
   describe('CLI accessibility', function () {
     it('`create-elm-app` command should be available', function () {
-      var output = spawn.sync('create-elm-app').output;
+      const output = spawn.sync('create-elm-app').output;
       expect(output.toString()).to.have.string('Usage: create-elm-app <project-directory>');
     });
 
     it('`elm-app` command should be available', function () {
-      var result = spawn.sync('elm-app');
-      var output = result.output;
+      const result = spawn.sync('elm-app');
+      const output = result.output;
       expect(output.toString()).to.have.string('Usage: elm-app <command>');
     });
 
     it('`elm-app package` command should be available', function () {
-      var result = spawn.sync('elm-app', [ 'package' ]);
-      var output = concatsStringBuffers(result.output);
+      const result = spawn.sync('elm-app', [ 'package' ]);
+      const output = concatsStringBuffers(result.output);
       expect(output).to.have.string('install and publish elm packages');
     });
   });

tests/elm-app.build.spec.js

@@ -29,8 +29,8 @@ describe('Building Elm application with `elm-app build`', function () {
   });
 
   it('`elm-app build` should succeed in `' + testAppName + '`', function () {
-    var result = spawn.sync('node', [ elmAppCmd, 'build' ]);
-    var outputString = result.output.map(function (out) {
+    const result = spawn.sync('node', [ elmAppCmd, 'build' ]);
+    const outputString = result.output.map(function (out) {
       return (out !== null) ? out.toString() : '';
     }).join('');
     expect(result.status).to.be.equal(0, 'Incorrect exit status code');

tests/elm-app.test.spec.js

@@ -0,0 +1,42 @@
+const path = require('path');
+const spawn = require('cross-spawn');
+const rimraf = require('rimraf');
+const expect = require('chai').expect;
+
+
+const testAppName = 'test-app';
+const rootDir = path.resolve(__dirname, '..');
+const testAppDir = path.join(rootDir, testAppName);
+const createElmAppCmd = path.join(rootDir, 'bin/create-elm-app-cli.js');
+const elmAppCmd = path.join(rootDir, 'bin/elm-app-cli.js');
+
+describe('Testing Elm application with `elm-app test` (Please wait...)', function () {
+  before(function (done) {
+    const cmd = spawn.sync('node', [ createElmAppCmd, testAppName ]);
+
+    if (cmd.status === 0) {
+      process.chdir(testAppDir);
+      done();
+    } else {
+      done(false);
+    }
+  });
+
+  after(function () {
+    process.chdir(rootDir);
+    rimraf.sync(testAppDir);
+  });
+
+  it('`elm-app test` should succeed in `' + testAppName + '`', function () {
+    const result = spawn.sync('node', [ elmAppCmd, 'test' ]);
+    const outputString = result.output.map(function (out) {
+      return (out !== null) ? out.toString() : '';
+    }).join('');
+
+    expect(result.status).to.be.at.least(1);
+    expect(outputString).to.have.string('This test should fail');
+    expect(outputString).to.have.string('failed as expected!');
+  }).timeout(2 * 60 * 1000);
+});
+
+