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gaia/apps/sharedtest/test/unit/version_helper_test.js

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+/* global VersionHelper, MockNavigatorSettings */
+'use strict';
+
+require('/shared/js/version_helper.js');
+require('/shared/test/unit/mocks/mock_navigator_moz_settings.js');
+
+// test that:
+//  API has expected behaviour: ready,
+suite('VersionHelper > ', function() {
+  var realSettings;
+	suiteSetup(function() {
+    realSettings = navigator.mozSettings;
+    navigator.mozSettings = MockNavigatorSettings;
+  });
+  suiteTeardown(function() {
+    navigator.mozSettings = realSettings;
+    realSettings = null;
+  });
+
+  test('getVersionInfo', function(done) {
+    var promise = VersionHelper.getVersionInfo();
+    assert.equal(typeof promise.then, 'function',
+                'getVersionInfo returns a then-able');
+    function onOutcome(info) {
+      assert.ok(info && !(info instanceof Error));
+      assert.ok('current' in info);
+      assert.equal(typeof info.isUpgrade, 'function');
+      assert.equal(typeof info.delta, 'function');
+    }
+    promise.then(onOutcome, onOutcome).then(done, done);
+  });
+
+  suite('unknown previous version > ', function() {
+    setup(function(done) {
+      navigator.mozSettings.mSettings['deviceinfo.os'] = '2.0.1';
+      var fixture = this;
+      VersionHelper.getVersionInfo().then(function(result) {
+        fixture.versionInfo = result;
+        done();
+      });
+    });
+
+    test('settings are reflected properly', function() {
+      var info = this.versionInfo;
+      assert.equal(info.current.major, 2);
+      assert.equal(info.current.minor, 0);
+      assert.ok(!info.previous, 'previous version is falsey');
+    });
+    test('delta', function() {
+      var delta = this.versionInfo.delta();
+      assert.equal(delta, '..2.0');
+    });
+    test('version toString', function() {
+      assert.equal(this.versionInfo.current.toString(),
+                   '2.0.1');
+    });
+    test('isUpgrade', function() {
+      assert.isFalse(this.versionInfo.isUpgrade());
+    });
+  });
+
+  suite('known previous version > ', function() {
+    setup(function(done) {
+      var req = navigator.mozSettings.createLock().set({
+        'deviceinfo.os': '2.1.0',
+        'deviceinfo.previous_os': '1.4.1',
+      });
+      var fixture = this;
+      req.onsuccess = function() {
+        VersionHelper.getVersionInfo().then(function(info) {
+          fixture.versionInfo = info;
+          done();
+        });
+      };
+      req.onerror = function() {
+        throw new Error('Failed to setup deviceinfo.* setting on mock');
+      };
+    });
+
+    test('settings are reflected properly', function() {
+      var info = this.versionInfo;
+      assert.equal(info.previous.major, 1);
+      assert.equal(info.previous.minor, 4);
+    });
+    test('delta', function() {
+      var delta = this.versionInfo.delta();
+      assert.equal(delta, '1.4..2.1');
+    });
+    test('isUpgrade', function() {
+      assert.isTrue(this.versionInfo.isUpgrade());
+    });
+  });
+
+  suite('update > ', function() {
+    setup(function(done) {
+      var fixture = this;
+      var req = navigator.mozSettings.createLock().set({
+        'deviceinfo.os': '2.0.1',
+        'deviceinfo.previous_os': '1.4.1',
+      });
+      req.onsuccess = function() {
+        VersionHelper.getVersionInfo().then(function(result) {
+          fixture.versionInfo = result;
+          done();
+        });
+      };
+      req.onerror = function() {
+        throw new Error('Failed to setup deviceinfo.* setting on mock');
+      };
+    });
+
+    test('previous_os', function(done){
+      var fixture = this;
+      VersionHelper.updatePrevious().then(function(){
+        assert.equal(navigator.mozSettings.mSettings['deviceinfo.previous_os'],
+                    '2.0.1', 'setting is updated');
+        assert.equal(fixture.versionInfo.previous.toString(),
+                    '1.4.1', 'previous in-memory version is maintained after' +
+                    ' updatePrevious()');
+      }, function() {
+        assert.isFalse('fail at comparing previous_os settings');
+      }).then(done, done);
+    });
+  });
+});