Merge pull request #11 from kellyselden/unit

add mocker

.babelrc

@@ -1,4 +1,4 @@
 {
   "presets": ["es2015", "stage-2"],
-  "plugins": []
+  "plugins": ["rewire"]
 }

lib/mocha/add-compilers.js

@@ -1,3 +1,5 @@
+const _require = require;
+
 export default (compilers, extensions) => {
   compilers.forEach(compiler => {
     let [ext, mod] = compiler.split(':');
@@ -6,6 +8,6 @@ export default (compilers, extensions) => {
       extensions.push(ext);
     }
 
-    require(mod);
+    _require(mod);
   });
 }

package.json

@@ -12,7 +12,8 @@
     "pretest": "npm run build",
     "precover": "npm run build",
     "test": "mocha --compilers js:babel-register \"test/@(acceptance|unit)/**/*-test.js\"",
-    "cover": "babel-node node_modules/isparta/bin/isparta cover --include-all-sources node_modules/mocha/bin/_mocha -- --compilers js:babel-register \"test/@(acceptance|unit)/**/*-test.js\""
+    "cover": "babel-node node_modules/isparta/bin/isparta cover --include-all-sources node_modules/mocha/bin/_mocha -- --compilers js:babel-register \"test/@(acceptance|unit)/**/*-test.js\"",
+    "debug": "node debug node_modules/mocha/bin/_mocha --compilers js:babel-register \"test/unit/**/*-test.js\""
   },
   "repository": {
     "type": "git",
@@ -33,11 +34,13 @@
   },
   "devDependencies": {
     "babel-cli": "^6.0.0",
+    "babel-plugin-rewire": "1.0.0-beta-3",
     "babel-preset-es2015": "^6.0.0",
     "babel-preset-stage-2": "^6.0.0",
     "babel-register": "^6.0.0",
     "chai": "^3.0.0",
     "coveralls": "^2.0.0",
-    "isparta": "^4.0.0"
+    "isparta": "^4.0.0",
+    "sinon": "^1.0.0"
   }
 }

test/unit/mocha/add-compilers-test.js

@@ -1,22 +1,45 @@
 import { expect } from 'chai';
 import addCompilers from '../../../lib/mocha/add-compilers';
 
-describe('unit - addCompilers', function() {
-  it('pushes to extentsions', function() {
-    let compilers = ['js:babel-register'];
+describe('unit - mocha/addCompilers', function() {
+  beforeEach(function() {
+    addCompilers.__Rewire__('_require', () => {});
+  });
+
+  afterEach(function() {
+    addCompilers.__ResetDependency__('_require');
+  });
+
+  it('pushes to extensions', function() {
+    let compilers = ['test-ext:'];
     let extensions = [];
 
     addCompilers(compilers, extensions);
 
-    expect(extensions).to.deep.equal(['js']);
+    expect(extensions).to.deep.equal(['test-ext']);
   });
 
   it('does not duplicate extensions', function() {
-    let compilers = ['js:babel-register'];
-    let extensions = ['js'];
+    let compilers = ['test-ext:'];
+    let extensions = ['test-ext'];
+
+    addCompilers(compilers, extensions);
+
+    expect(extensions).to.deep.equal(['test-ext']);
+  });
+
+  it('calls require with module name', function() {
+    let compilers = [':test-mod'];
+    let extensions = [];
+
+    let wasCalled;
+    addCompilers.__Rewire__('_require', module => {
+      expect(module).to.equal('test-mod');
+      wasCalled = true;
+    });
 
     addCompilers(compilers, extensions);
 
-    expect(extensions).to.deep.equal(['js']);
+    expect(wasCalled).to.be.true;
   });
 });

test/unit/mocha/add-files-test.js

@@ -0,0 +1,63 @@
+import { expect } from 'chai';
+import sinon from 'sinon';
+import addFiles from '../../../lib/mocha/add-files';
+
+describe('unit - mocha/addFiles', function() {
+  beforeEach(function() {
+    addFiles.__Rewire__('utils', {
+      lookupFiles(file) { return [file]; }
+    });
+  });
+
+  afterEach(function() {
+    addFiles.__ResetDependency__('utils');
+  });
+
+  it('calls lookupFiles correctly', function() {
+    let mocha = {
+      addFile: sinon.stub()
+    };
+    let files = ['test-file-1', 'test-file-2'];
+
+    let lookupFilesStub = sinon.stub().returns([]);
+    addFiles.__Rewire__('utils', {
+      lookupFiles: lookupFilesStub
+    });
+
+    addFiles(mocha, files, ['test-extension'], true, null);
+
+    expect(lookupFilesStub.callCount).to.equal(2);
+    expect(lookupFilesStub.args).to.deep.equal([
+      ['test-file-1', ['test-extension'], true],
+      ['test-file-2', ['test-extension'], true]
+    ]);
+  });
+
+  it('adds "test" if nothing supplied', function() {
+    let addFileStub = sinon.stub();
+    let mocha = {
+      addFile: addFileStub
+    };
+    let files = [];
+
+    addFiles(mocha, files, null, null, 'lint-test-file');
+
+    expect(addFileStub.callCount).to.equal(2);
+    expect(addFileStub.thisValues).to.deep.equal([mocha, mocha]);
+    expect(addFileStub.args).to.deep.equal([['test'], ['lint-test-file']]);
+  });
+
+  it('does not add "test" twice', function() {
+    let addFileStub = sinon.stub();
+    let mocha = {
+      addFile: addFileStub
+    };
+    let files = ['test'];
+
+    addFiles(mocha, files, null, null, 'lint-test-file');
+
+    expect(addFileStub.callCount).to.equal(2);
+    expect(addFileStub.thisValues).to.deep.equal([mocha, mocha]);
+    expect(addFileStub.args).to.deep.equal([['test'], ['lint-test-file']]);
+  });
+});