Add tests to analytics and fix them

lib/util/analytics.js

@@ -2,15 +2,13 @@ var Q = require('q');
 var mout = require('mout');
 
 var analytics = module.exports;
+
 var insight;
 
-// Initializes the application-wide insight singleton and asks for the
-// permission on the CLI during the first run.
-analytics.setup = function setup(config) {
-    var deferred = Q.defer();
-
-    // if `analytics` hasn't been explicitly set
-    if (config.analytics == null) {
+// Insight takes long to load, and often causes problems
+// in non-interactive environment, so we load it lazily
+function ensureInsight () {
+    if (!insight) {
         var Insight = require('insight');
         var pkg = require('../../package.json');
         insight = new Insight({
@@ -18,6 +16,17 @@ analytics.setup = function setup(config) {
             packageName: pkg.name,
             packageVersion: pkg.version
         });
+    }
+}
+
+// Initializes the application-wide insight singleton and asks for the
+// permission on the CLI during the first run.
+analytics.setup = function setup (config) {
+    var deferred = Q.defer();
+
+    // if `analytics` hasn't been explicitly set
+    if (config.analytics == null) {
+        ensureInsight();
 
         // if there is a stored value
         if (insight.optOut !== undefined) {
@@ -26,11 +35,10 @@ analytics.setup = function setup(config) {
             deferred.resolve();
         } else {
             if (config.interactive) {
-                // prompt the user if this is an interactive session
-                insight.askPermission(null, function(err, optOut) {
-                    // value is the *opposite* of user response
-                    // https://github.com/yeoman/insight/issues/31
-                    config.analytics = !optOut;
+                insight.askPermission(null, function(err, optIn) {
+                    // optIn callback param was exactly opposite before 0.4.3
+                    // so we force at least insight@0.4.3 in package.json
+                    config.analytics = optIn;
                     deferred.resolve();
                 });
             } else {
@@ -55,9 +63,8 @@ var Tracker = analytics.Tracker = function Tracker(config) {
 };
 
 Tracker.prototype.track = function track() {
-    if (!insight) {
-        throw new Error('You must call analytics.setup() prior to tracking.');
-    }
+    ensureInsight();
+
     insight.track.apply(insight, arguments);
 };
 

package.json

@@ -33,7 +33,7 @@
     "graceful-fs": "~3.0.1",
     "handlebars": "~2.0.0",
     "inquirer": "~0.7.1",
-    "insight": "~0.4.1",
+    "insight": "~0.4.3",
     "is-root": "~1.0.0",
     "junk": "~1.0.0",
     "lockfile": "~1.0.0",

test/util/analytics.js

@@ -0,0 +1,105 @@
+var expect = require('expect.js');
+var proxyquire = require('proxyquire');
+var object = require('mout').object;
+
+describe('analytics', function () {
+
+    var mockAnalytics = function(stubs, promptResponse) {
+        return proxyquire('../../lib/util/analytics', {
+            insight: function () {
+                return object.merge(stubs || {}, {
+                    askPermission: function (message, callback) {
+                        callback(undefined, promptResponse);
+                    }
+                });
+            },
+        });
+    };
+
+    describe('#setup', function () {
+        it('leaves analytics enabled if provided', function () {
+            var config = { analytics: true };
+
+            return mockAnalytics().setup(config).then(function () {
+                expect(config.analytics).to.be(true);
+            });
+        });
+
+        it('leaves analytics disabled if provided', function () {
+            var config = { analytics: false };
+
+            return mockAnalytics().setup(config).then(function () {
+                expect(config.analytics).to.be(false);
+            });
+        });
+
+        it('defaults to false if insight.optOut is true', function () {
+            var config = { };
+
+            return mockAnalytics({ optOut: true }).setup(config).then(function () {
+                expect(config.analytics).to.be(false);
+            });
+        });
+
+        it('defaults to true if insight.optOut is false', function () {
+            var config = { };
+
+            return mockAnalytics({ optOut: false }).setup(config).then(function () {
+                expect(config.analytics).to.be(true);
+            });
+        });
+
+        it('defaults to true if insight.optOut is undefined and noninteractive', function () {
+            var config = { };
+
+            return mockAnalytics({ optOut: undefined }).setup(config).then(function () {
+                expect(config.analytics).to.be(true);
+            });
+        });
+
+        it('defautls to true if interactive insights return true from prompt', function () {
+            var config = { interactive: true };
+
+            return mockAnalytics({ optOut: undefined }, true).setup(config).then(function () {
+                expect(config.analytics).to.be(true);
+            });
+        });
+
+        it('defautls to false if interactive insights return false from prompt', function () {
+            var config = { interactive: true };
+
+            return mockAnalytics({ optOut: undefined }, false).setup(config).then(function () {
+                expect(config.analytics).to.be(false);
+            });
+        });
+    });
+
+    describe('Tracker', function (next) {
+        it('tracks if analytics = true', function(next) {
+            var analytics = mockAnalytics({
+                track: function (arg) {
+                    expect(arg).to.be('foo');
+                    next();
+                }
+            });
+
+            new analytics.Tracker({
+                analytics: true
+            }).track('foo');
+        });
+
+        it('does not track if analytics = false', function () {
+            var analytics = mockAnalytics({
+                track: function (arg) {
+                    throw new Error();
+                }
+            });
+
+            expect(function () {
+                new analytics.Tracker({
+                    analytics: false
+                }).track('foo');
+            }).to.not.throwError();
+        });
+    });
+});

test/util/index.js

@@ -1,3 +1,4 @@
 describe('util', function () {
     require('./removeIgnores');
+    require('./analytics');
 });