feat(bootstrap): add ability to load adapterConfig from bootstrap

* feat(cli): add ability to load adapterConfig from bootstrap

Instead of forcing the commitizen config to be loaded via a file (package.json, .czrc, .cz.json)
this adds a way to inject an adapterConfig into the bootstrap function. We use this internally at
Autodesk to wrap the cli so that each of our repos doesn't need to have the commitizen config

* test(cli): add tests for providing adapterConfig via bootstrap function

* add proxyquire & sinon to aid unit testing
* excludes src/cli from nyc since most of it is not unit-tested and this
  test causes coverage to be misreported

Author: Cameron Westland

package.json

@@ -58,9 +58,11 @@
     "node-uuid": "1.4.7",
     "nodemon": "1.9.1",
     "nyc": "6.4.0",
+    "proxyquire": "^1.7.4",
     "rimraf": "2.5.2",
     "semantic-release": "^4.3.5",
-    "semver": "5.1.0"
+    "semver": "5.1.0",
+    "sinon": "^1.17.3"
   },
   "dependencies": {
     "chalk": "1.1.3",
@@ -84,5 +86,12 @@
       "es2015",
       "stage-2"
     ]
+  },
+
+  "nyc": {
+    "exclude": [
+      "src/cli",
+      "test"
+    ]
   }
 }

src/cli/git-cz.js

@@ -14,10 +14,9 @@ function bootstrap(environment = {}) {
 
   // Get cli args
   let rawGitArgs = process.argv.slice(2, process.argv.length);
-  
-  // Load the adapter config
-  let adapterConfig = configLoader.load();
-  
+
+  let adapterConfig = environment.config || configLoader.load();
+
   // Choose a strategy based on the existance the adapter config
   if(typeof adapterConfig !== 'undefined') {
     // This tells commitizen we're in business

test/tests/cli.js

@@ -0,0 +1,59 @@
+import {expect} from 'chai';
+import proxyquire from 'proxyquire';
+import * as sinon from 'sinon';
+
+describe('git-cz', () => {
+  let bootstrap;
+  let fakeStrategies, fakeCommitizen;
+
+  beforeEach(() => {
+    fakeStrategies = {
+      git: sinon.spy(),
+      gitCz: sinon.spy()
+    }
+
+    fakeCommitizen = {
+      configLoader: {
+        load: sinon.stub()
+      }
+    }
+
+    bootstrap = proxyquire('../../src/cli/git-cz', {
+      './strategies': fakeStrategies,
+      '../commitizen': fakeCommitizen
+    }).bootstrap;
+  });
+
+  describe('bootstrap', () => {
+    describe('when config is provided', () => {
+      it('passes config to useGitCzStrategy', () => {
+        const config = sinon.spy();
+
+        bootstrap({ config });
+
+        expect(fakeStrategies.gitCz.args[0][2]).to.equal(config);
+      });
+    });
+
+    describe('when config is not provided', () => {
+
+      describe('and the config is returned from configLoader.load', () => {
+        it('uses config from configLoader.load()', () => {
+          const config = sinon.stub();
+          fakeCommitizen.configLoader.load.returns(config);
+
+          bootstrap({});
+
+          expect(fakeStrategies.gitCz.args[0][2]).to.equal(config);
+        });
+      });
+
+      describe('and the config is not returned from configLoader.load', () => {
+        it('tells commitizen to use the git strategy', () => {
+          bootstrap({});
+          expect(fakeStrategies.git.called).to.equal(true);
+        });
+      });
+    });
+  });
+});

test/tests/index.js

@@ -1,4 +1,5 @@
 import './adapter';
+import './cli';
 import './commit';
 import './configLoader';
 import './init';