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gaia/apps/settings/test/unit/modules/battery_test.js

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+/* global define */
+'use strict';
+
+suite('Battery', function() {
+  var sandbox = sinon.sandbox.create();
+  var MockPlatformBattery;
+  var map = {
+    'modules/battery': {
+      'modules/navigator/battery': 'MockPlatformBattery'
+    }
+  };
+
+  // Load a new Batery instance
+  var loadBattery = function(callback) {
+    var requireCtx = testRequire([], map, function() {});
+    define('MockPlatformBattery', function() {
+      return MockPlatformBattery;
+    });
+    requireCtx(['modules/battery'], callback);
+  };
+
+  setup(function() {
+    MockPlatformBattery = {
+      charging: null,
+      level: null,
+      addEventListener: function() {}
+    };
+  });
+
+  teardown(function() {
+    sandbox.restore();
+  });
+
+  suite('return correct values when initialized', function() {
+    test('charging', function(done) {
+      MockPlatformBattery.charging = true;
+      MockPlatformBattery.level = 0.5;
+      MockPlatformBattery.chargingTime = 13337;
+      MockPlatformBattery.dischargingTime = Infinity;
+
+      loadBattery(function(Battery) {
+        assert.equal(Battery.level, 50);
+        assert.equal(Battery.state, 'charging');
+        assert.equal(Battery.chargingTime, 13337);
+        assert.equal(Battery.dischargingTime, Infinity);
+        done();
+      });
+    });
+
+    test('charged', function(done) {
+      MockPlatformBattery.charging = true;
+      MockPlatformBattery.level = 1;
+
+      loadBattery(function(Battery) {
+        assert.equal(Battery.level, 100);
+        assert.equal(Battery.state, 'charged');
+        done();
+      });
+    });
+
+    test('unplugged', function(done) {
+      MockPlatformBattery.charging = false;
+      MockPlatformBattery.level = 1;
+
+      loadBattery(function(Battery) {
+        assert.equal(Battery.level, 100);
+        assert.equal(Battery.state, 'unplugged');
+        done();
+      });
+    });
+  });
+
+  suite('status changes', function() {
+    test('should reflect level changes', function(done) {
+      sandbox.spy(MockPlatformBattery, 'addEventListener');
+      MockPlatformBattery.level = 0.5;
+
+      loadBattery(function(Battery) {
+        assert.equal(Battery.level, 50);
+        // change the level
+        MockPlatformBattery.level = 0.51;
+        // emit the event
+        MockPlatformBattery.addEventListener.args.some(function(arg) {
+          if (arg[0] === 'levelchange') {
+            arg[1].call();
+            return true;
+          }
+        });
+        assert.equal(Battery.level, 51);
+        done();
+      });
+    });
+
+    test('should reflect state changes', function(done) {
+      sandbox.spy(MockPlatformBattery, 'addEventListener');
+      MockPlatformBattery.charging = false;
+      MockPlatformBattery.level = 1;
+
+      loadBattery(function(Battery) {
+        assert.equal(Battery.state, 'unplugged');
+        // change the state
+        MockPlatformBattery.charging = true;
+        // emit the event
+        MockPlatformBattery.addEventListener.args.some(function(arg) {
+          if (arg[0] === 'chargingchange') {
+            arg[1].call();
+            return true;
+          }
+        });
+        assert.equal(Battery.state, 'charged');
+        done();
+      });
+    });
+
+    test('should reflect chargingTime changes', function(done) {
+      sandbox.spy(MockPlatformBattery, 'addEventListener');
+      MockPlatformBattery.charging = true;
+      MockPlatformBattery.level = 10;
+      MockPlatformBattery.chargingTime = 13337;
+
+      loadBattery(function(Battery) {
+        // change the state
+        MockPlatformBattery.chargingTime = 13337 - 1337;
+        // emit the event
+        MockPlatformBattery.addEventListener.args.some(function(arg) {
+          if (arg[0] === 'chargingtimechange') {
+            arg[1].call();
+            return true;
+          }
+        });
+        assert.equal(Battery.chargingTime, 13337 - 1337);
+        done();
+      });
+    });
+
+    test('should reflect dischargingTime changes', function(done) {
+      sandbox.spy(MockPlatformBattery, 'addEventListener');
+      MockPlatformBattery.charging = false;
+      MockPlatformBattery.level = 9;
+      MockPlatformBattery.dischargingTime = 13337;
+
+      loadBattery(function(Battery) {
+        // change the state
+        MockPlatformBattery.dischargingTime = 13337 - 1337;
+        // emit the event
+        MockPlatformBattery.addEventListener.args.some(function(arg) {
+          if (arg[0] === 'dischargingtimechange') {
+            arg[1].call();
+            return true;
+          }
+        });
+        assert.equal(Battery.dischargingTime, 13337 - 1337);
+        done();
+      });
+    });
+  });
+});