add mocker

.babelrc

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

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 Kelly Selden
+Copyright (c) 2016 Kelly Selden
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -19,4 +19,3 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
-

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']]);
+  });
+});