Feature selector (#4074)

* WIP

* ParityBar verification

* import from index.js

* i18n expansion & tests

* Features component

* Adapt language selector to use features

* Add features to settings view

* typo

* Convert logging

* Fix earlier merge issues resulting in test failures

* Lint failure fixes (new rules)

* Fix additional listing rules

* Re-add FormattedMessage (missing after merge), fix tests

* Fix loader overrides

* grumble: split item rendering (& test)

* grumble: allow enable/disable while testing (default on)

* grumble: move LanguageSelector below Features

* grumble: don't pass visiblity prop (& update tests)

* grumble: missing observable (onClick misbehaving)

* grumble: don't reset to defaults per session

* Fix to single store instance

js/src/i18n/constants.js

@@ -0,0 +1,27 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+const DEFAULT_LOCALE = 'en';
+const DEFAULT_LOCALES = process.env.NODE_ENV === 'production'
+  ? ['en']
+  : ['en', 'de'];
+const LS_STORE_KEY = '_parity::locale';
+
+export {
+  DEFAULT_LOCALE,
+  DEFAULT_LOCALES,
+  LS_STORE_KEY
+};

js/src/i18n/languages.spec.js

@@ -0,0 +1,30 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { DEFAULT_LOCALE } from './constants';
+import languages from './languages';
+
+const keys = Object.keys(languages);
+
+describe('i18n/languages', () => {
+  it('has a language list', () => {
+    expect(keys.length > 1).to.be.true;
+  });
+
+  it('includes DEFAULT_LOCALE as a language', () => {
+    expect(keys.includes(DEFAULT_LOCALE)).to.be.true;
+  });
+});

js/src/i18n/store.js

@@ -21,39 +21,32 @@ import de from 'react-intl/locale-data/de';
 import en from 'react-intl/locale-data/en';
 import store from 'store';
 
+import { DEFAULT_LOCALE, DEFAULT_LOCALES, LS_STORE_KEY } from './constants';
 import languages from './languages';
 import deMessages from './de';
 import enMessages from './en';
 
-const LS_STORE_KEY = '_parity::locale';
-
 let instance = null;
-const isProduction = process.env.NODE_ENV === 'production';
 
-const DEFAULT = 'en';
 const LANGUAGES = flatten({ languages });
 const MESSAGES = {
   de: Object.assign(flatten(deMessages), LANGUAGES),
   en: Object.assign(flatten(enMessages), LANGUAGES)
 };
-const LOCALES = isProduction
-  ? ['en']
-  : ['en', 'de'];
 
 addLocaleData([...de, ...en]);
 
 export default class Store {
-  @observable locale = DEFAULT;
-  @observable locales = LOCALES;
-  @observable messages = MESSAGES[DEFAULT];
-  @observable isDevelopment = !isProduction;
+  @observable locale = DEFAULT_LOCALE;
+  @observable locales = DEFAULT_LOCALES;
+  @observable messages = MESSAGES[DEFAULT_LOCALE];
 
   constructor () {
     const savedLocale = store.get(LS_STORE_KEY);
 
-    this.locale = (savedLocale && LOCALES.includes(savedLocale))
+    this.locale = (savedLocale && DEFAULT_LOCALES.includes(savedLocale))
       ? savedLocale
-      : DEFAULT;
+      : DEFAULT_LOCALE;
     this.messages = MESSAGES[this.locale];
   }
 

js/src/i18n/store.spec.js

@@ -0,0 +1,73 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import store from 'store';
+
+import { DEFAULT_LOCALE, DEFAULT_LOCALES, LS_STORE_KEY } from './constants';
+import { LocaleStore } from './';
+
+let localeStore;
+
+describe('i18n/Store', () => {
+  before(() => {
+    localeStore = LocaleStore.get();
+    store.set(LS_STORE_KEY, 'testing');
+  });
+
+  it('creates a default instance', () => {
+    expect(localeStore).to.be.ok;
+  });
+
+  it('sets the default locale to default (invalid localStorage)', () => {
+    expect(localeStore.locale).to.equal(DEFAULT_LOCALE);
+  });
+
+  it('loads the locale from localStorage (valid localStorage)', () => {
+    const testLocale = DEFAULT_LOCALES[DEFAULT_LOCALES.length - 1];
+
+    store.set(LS_STORE_KEY, testLocale);
+
+    const testStore = new LocaleStore();
+
+    expect(testStore.locale).to.equal(testLocale);
+  });
+
+  it('lists the locales', () => {
+    expect(localeStore.locales.length > 1).to.be.true;
+  });
+
+  it('lists locals including default', () => {
+    expect(localeStore.locales.includes(DEFAULT_LOCALE)).to.be.true;
+  });
+
+  describe('@action', () => {
+    describe('setLocale', () => {
+      const testLocale = DEFAULT_LOCALES[DEFAULT_LOCALES.length - 1];
+
+      beforeEach(() => {
+        localeStore.setLocale(testLocale);
+      });
+
+      it('sets the locale as passed', () => {
+        expect(localeStore.locale).to.equal(testLocale);
+      });
+
+      it('sets the locale in localStorage', () => {
+        expect(store.get(LS_STORE_KEY)).to.equal(testLocale);
+      });
+    });
+  });
+});

js/src/ui/Features/constants.js

@@ -0,0 +1,21 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+const LS_STORE_KEY = '_parity::features';
+
+export {
+  LS_STORE_KEY
+};

js/src/ui/Features/defaults.js

@@ -0,0 +1,61 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+const MODES = {
+  DEVELOPMENT: 1000, // only in dev mode, disabled by default, can be toggled
+  TESTING: 1011, // feature is available in dev mode
+  PRODUCTION: 1022 // feature is available
+};
+
+const FEATURES = {
+  LANGUAGE: 'LANGUAGE',
+  LOGLEVELS: 'LOGLEVELS'
+};
+
+const DEFAULTS = {
+  [FEATURES.LANGUAGE]: {
+    mode: MODES.TESTING,
+    name: 'Language Selection',
+    description: 'Allows changing the default interface language'
+  },
+  [FEATURES.LOGLEVELS]: {
+    mode: MODES.TESTING,
+    name: 'Logging Level Selection',
+    description: 'Allows changing of the log levels for various components'
+  }
+};
+
+if (process.env.NODE_ENV === 'test') {
+  Object
+    .keys(MODES)
+    .forEach((mode) => {
+      const key = `.${mode}`;
+
+      FEATURES[key] = key;
+      DEFAULTS[key] = {
+        mode: MODES[mode],
+        name: key,
+        description: key
+      };
+    });
+}
+
+export default DEFAULTS;
+
+export {
+  FEATURES,
+  MODES
+};

js/src/ui/Features/defaults.spec.js

@@ -0,0 +1,67 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import defaults, { FEATURES, MODES } from './defaults';
+
+const features = Object.values(FEATURES);
+const modes = Object.values(MODES);
+
+describe('ui/Features/Defaults', () => {
+  describe('feature codes', () => {
+    Object.keys(FEATURES).forEach((key) => {
+      describe(key, () => {
+        let value;
+
+        beforeEach(() => {
+          value = FEATURES[key];
+        });
+
+        it('exists as an default', () => {
+          expect(defaults[value]).to.be.ok;
+        });
+
+        it('has a single unique code', () => {
+          expect(features.filter((code) => code === value).length).to.equal(1);
+        });
+      });
+    });
+  });
+
+  describe('defaults', () => {
+    Object.keys(defaults).forEach((key) => {
+      describe(key, () => {
+        let value;
+
+        beforeEach(() => {
+          value = defaults[key];
+        });
+
+        it('exists as an exposed feature', () => {
+          expect(features.includes(key)).to.be.ok;
+        });
+
+        it('has a valid mode', () => {
+          expect(modes.includes(value.mode)).to.be.true;
+        });
+
+        it('has a name and description', () => {
+          expect(value.description).to.be.ok;
+          expect(value.name).to.be.ok;
+        });
+      });
+    });
+  });
+});

js/src/ui/Features/features.css

@@ -0,0 +1,20 @@
+/* Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+/* This file is part of Parity.
+/*
+/* Parity is free software: you can redistribute it and/or modify
+/* it under the terms of the GNU General Public License as published by
+/* the Free Software Foundation, either version 3 of the License, or
+/* (at your option) any later version.
+/*
+/* Parity is distributed in the hope that it will be useful,
+/* but WITHOUT ANY WARRANTY; without even the implied warranty of
+/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+/* GNU General Public License for more details.
+/*
+/* You should have received a copy of the GNU General Public License
+/* along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+.description {
+  opacity: 0.75;
+}

js/src/ui/Features/features.js

@@ -0,0 +1,69 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { Checkbox } from 'material-ui';
+import { observer } from 'mobx-react';
+import { List, ListItem } from 'material-ui/List';
+import React, { Component } from 'react';
+
+import defaults, { MODES } from './defaults';
+import Store from './store';
+import styles from './features.css';
+
+@observer
+export default class Features extends Component {
+  store = Store.get();
+
+  render () {
+    if (process.env.NODE_ENV === 'production') {
+      return null;
+    }
+
+    return (
+      <List>
+        {
+          Object
+            .keys(defaults)
+            .filter((key) => defaults[key].mode !== MODES.PRODUCTION)
+            .map(this.renderItem)
+        }
+      </List>
+    );
+  }
+
+  renderItem = (key) => {
+    const feature = defaults[key];
+    const onCheck = () => this.store.toggleActive(key);
+
+    return (
+      <ListItem
+        key={ `feature_${key}` }
+        leftCheckbox={
+          <Checkbox
+            checked={ this.store.active[key] }
+            onCheck={ onCheck }
+          />
+        }
+        primaryText={ feature.name }
+        secondaryText={
+          <div className={ styles.description }>
+            { feature.description }
+          </div>
+        }
+      />
+    );
+  }
+}

js/src/ui/Features/features.spec.js

@@ -0,0 +1,89 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { shallow } from 'enzyme';
+import React from 'react';
+
+import defaults, { MODES } from './defaults';
+
+import Features from './';
+
+let component;
+let instance;
+
+function render (props = { visible: true }) {
+  component = shallow(
+    <Features { ...props } />
+  );
+  instance = component.instance();
+
+  return component;
+}
+
+describe('views/Settings/Features', () => {
+  beforeEach(() => {
+    render();
+  });
+
+  it('renders defaults', () => {
+    expect(component).to.be.ok;
+  });
+
+  describe('visibility', () => {
+    let oldEnv;
+
+    beforeEach(() => {
+      oldEnv = process.env.NODE_ENV;
+    });
+
+    afterEach(() => {
+      process.env.NODE_ENV = oldEnv;
+    });
+
+    it('renders null when NODE_ENV === production', () => {
+      process.env.NODE_ENV = 'production';
+      render();
+      expect(component.get(0)).to.be.null;
+    });
+
+    it('renders component when NODE_ENV !== production', () => {
+      process.env.NODE_ENV = 'development';
+      render();
+      expect(component.get(0)).not.to.be.null;
+    });
+  });
+
+  describe('instance methods', () => {
+    describe('renderItem', () => {
+      const keys = Object.keys(defaults).filter((key) => defaults[key].mode !== MODES.PRODUCTION);
+      const key = keys[0];
+
+      let item;
+
+      beforeEach(() => {
+        item = instance.renderItem(key);
+      });
+
+      it('renders an item', () => {
+        expect(item).not.to.be.null;
+      });
+
+      it('displays the correct name', () => {
+        expect(item.props.primaryText).to.equal(defaults[key].name);
+      });
+    });
+  });
+});

js/src/ui/Features/index.js

@@ -0,0 +1,25 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { FEATURES } from './defaults';
+import FeaturesStore from './store';
+
+export default from './features';
+
+export {
+  FEATURES,
+  FeaturesStore
+};

js/src/ui/Features/store.js

@@ -0,0 +1,73 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { action, observable } from 'mobx';
+import store from 'store';
+
+import { LS_STORE_KEY } from './constants';
+import defaults, { FEATURES, MODES } from './defaults';
+
+const isProductionMode = process.env.NODE_ENV === 'production';
+
+let instance = null;
+
+export default class Store {
+  @observable active = {};
+
+  constructor () {
+    this.loadActiveFeatures();
+  }
+
+  @action setActiveFeatures = (features = {}, isProduction) => {
+    this.active = Object.assign({}, this.getDefaultActive(isProduction), features);
+  }
+
+  @action toggleActive = (featureKey) => {
+    this.active = Object.assign({}, this.active, { [featureKey]: !this.active[featureKey] });
+    this.saveActiveFeatures();
+  }
+
+  getDefaultActive (isProduction = isProductionMode) {
+    const modesTest = [MODES.PRODUCTION];
+
+    if (!isProduction) {
+      modesTest.push(MODES.TESTING);
+    }
+
+    return Object
+      .keys(FEATURES)
+      .reduce((visibility, feature) => {
+        visibility[feature] = modesTest.includes(defaults[feature].mode);
+        return visibility;
+      }, {});
+  }
+
+  loadActiveFeatures () {
+    this.setActiveFeatures(store.get(LS_STORE_KEY));
+  }
+
+  saveActiveFeatures () {
+    store.set(LS_STORE_KEY, this.active);
+  }
+
+  static get () {
+    if (!instance) {
+      instance = new Store();
+    }
+
+    return instance;
+  }
+}

js/src/ui/Features/store.spec.js

@@ -0,0 +1,96 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import lstore from 'store';
+
+import { LS_STORE_KEY } from './constants';
+import defaults, { MODES } from './defaults';
+
+import Store from './store';
+
+let store;
+
+function createStore () {
+  store = new Store();
+
+  return store;
+}
+
+describe('ui/Features/Store', () => {
+  beforeEach(() => {
+    lstore.set(LS_STORE_KEY, { 'testingFromStorage': true });
+    createStore();
+  });
+
+  it('loads with values from localStorage', () => {
+    expect(store.active.testingFromStorage).to.be.true;
+  });
+
+  describe('@action', () => {
+    describe('setActiveFeatures', () => {
+      it('sets the active features', () => {
+        store.setActiveFeatures({ 'testing': true });
+        expect(store.active.testing).to.be.true;
+      });
+
+      it('overrides the defaults', () => {
+        store.setActiveFeatures({ '.PRODUCTION': false });
+        expect(store.active['.PRODUCTION']).to.be.false;
+      });
+    });
+
+    describe('toggleActive', () => {
+      it('changes the state of a feature', () => {
+        expect(store.active['.PRODUCTION']).to.be.true;
+        store.toggleActive('.PRODUCTION');
+        expect(store.active['.PRODUCTION']).to.be.false;
+      });
+
+      it('saves the updated state to localStorage', () => {
+        store.toggleActive('.PRODUCTION');
+        expect(lstore.get(LS_STORE_KEY)).to.deep.equal(store.active);
+      });
+    });
+  });
+
+  describe('operations', () => {
+    describe('getDefaultActive', () => {
+      it('returns features where mode === TESTING|PRODUCTION (non-production)', () => {
+        const visibility = store.getDefaultActive(false);
+
+        expect(
+          Object
+            .keys(visibility)
+            .filter((key) => visibility[key])
+            .filter((key) => ![MODES.TESTING, MODES.PRODUCTION].includes(defaults[key].mode))
+            .length
+        ).to.equal(0);
+      });
+
+      it('returns features where mode === PRODUCTION (production)', () => {
+        const visibility = store.getDefaultActive(true);
+
+        expect(
+          Object
+            .keys(visibility)
+            .filter((key) => visibility[key])
+            .filter((key) => ![MODES.PRODUCTION].includes(defaults[key].mode))
+            .length
+        ).to.equal(0);
+      });
+    });
+  });
+});

js/src/ui/LanguageSelector/languageSelector.js

@@ -14,20 +14,23 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-import React, { Component } from 'react';
-import { FormattedMessage } from 'react-intl';
 import { MenuItem } from 'material-ui';
 import { observer } from 'mobx-react';
+import React, { Component } from 'react';
+import { FormattedMessage } from 'react-intl';
+
+import { LocaleStore } from '~/i18n';
+import { FeaturesStore, FEATURES } from '../Features';
 
 import Select from '../Form/Select';
-import { LocaleStore } from '../../i18n';
 
 @observer
 export default class LanguageSelector extends Component {
+  features = FeaturesStore.get();
   store = LocaleStore.get();
 
   render () {
-    if (!this.store.isDevelopment) {
+    if (!this.features.active[FEATURES.LANGUAGE]) {
       return null;
     }
 
@@ -70,6 +73,6 @@ export default class LanguageSelector extends Component {
   }
 
   onChange = (event, index, locale) => {
-    this.store.setLocale(locale);
+    this.store.setLocale(locale || event.target.value);
   }
 }

js/src/ui/LanguageSelector/langugeSelector.spec.js

@@ -0,0 +1,69 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { shallow } from 'enzyme';
+import React from 'react';
+import sinon from 'sinon';
+
+import { LocaleStore } from '~/i18n';
+
+import LanguageSelector from './';
+
+let component;
+
+function render (props = {}) {
+  component = shallow(
+    <LanguageSelector { ...props } />
+  );
+
+  return component;
+}
+
+describe('LanguageSelector', () => {
+  it('renders defaults', () => {
+    expect(render()).to.be.ok;
+  });
+
+  describe('Select', () => {
+    let select;
+    let localeStore;
+
+    beforeEach(() => {
+      localeStore = LocaleStore.get();
+      sinon.stub(localeStore, 'setLocale');
+
+      render();
+      select = component.find('Select');
+    });
+
+    afterEach(() => {
+      localeStore.setLocale.restore();
+    });
+
+    it('renders the Select', () => {
+      expect(select).to.have.length(1);
+    });
+
+    it('has locale items', () => {
+      expect(select.find('MenuItem').length > 0).to.be.true;
+    });
+
+    it('calls localeStore.setLocale when changed', () => {
+      select.simulate('change', { target: { value: 'de' } });
+      expect(localeStore.setLocale).to.have.been.calledWith('de');
+    });
+  });
+});

js/src/ui/index.js

@@ -31,6 +31,7 @@ import CopyToClipboard from './CopyToClipboard';
 import CurrencySymbol from './CurrencySymbol';
 import Editor from './Editor';
 import Errors from './Errors';
+import Features, { FEATURES, FeaturesStore } from './Features';
 import Form, { AddressSelect, FormWrap, TypedInput, Input, InputAddress, InputAddressSelect, InputChip, InputInline, Select, RadioButtons } from './Form';
 import GasPriceEditor from './GasPriceEditor';
 import GasPriceSelector from './GasPriceSelector';
@@ -74,6 +75,9 @@ export {
   CurrencySymbol,
   Editor,
   Errors,
+  FEATURES,
+  Features,
+  FeaturesStore,
   Form,
   FormWrap,
   GasPriceEditor,

js/src/views/ParityBar/parityBar.js

@@ -16,17 +16,18 @@
 
 import React, { Component, PropTypes } from 'react';
 import ReactDOM from 'react-dom';
+import { FormattedMessage } from 'react-intl';
 import { Link } from 'react-router';
 import { connect } from 'react-redux';
 import { throttle } from 'lodash';
 import store from 'store';
 
+import imagesEthcoreBlock from '~/../assets/images/parity-logo-white-no-text.svg';
 import { CancelIcon, FingerprintIcon } from '~/ui/Icons';
 import { Badge, Button, ContainerTitle, ParityBackground } from '~/ui';
 import { Embedded as Signer } from '../Signer';
 import DappsStore from '~/views/Dapps/dappsStore';
 
-import imagesEthcoreBlock from '!url-loader!../../../assets/images/parity-logo-white-no-text.svg';
 import styles from './parityBar.css';
 
 const LS_STORE_KEY = '_parity::parityBar';
@@ -112,10 +113,6 @@ class ParityBar extends Component {
   render () {
     const { moving, opened, position } = this.state;
 
-    const content = opened
-      ? this.renderExpanded()
-      : this.renderBar();
-
     const containerClassNames = opened
       ? [ styles.overlay ]
       : [ styles.bar ];
@@ -124,11 +121,12 @@ class ParityBar extends Component {
       containerClassNames.push(styles.moving);
     }
 
-    const parityBgClassName = opened
-      ? styles.expanded
-      : styles.corner;
-
-    const parityBgClassNames = [ parityBgClassName, styles.parityBg ];
+    const parityBgClassNames = [
+      opened
+        ? styles.expanded
+        : styles.corner,
+      styles.parityBg
+    ];
 
     if (moving) {
       parityBgClassNames.push(styles.moving);
@@ -169,7 +167,11 @@ class ParityBar extends Component {
           ref='container'
           style={ parityBgStyle }
         >
-          { content }
+          {
+            opened
+              ? this.renderExpanded()
+              : this.renderBar()
+          }
         </ParityBackground>
       </div>
     );
@@ -182,34 +184,38 @@ class ParityBar extends Component {
       return null;
     }
 
-    const parityIcon = (
-      <img
-        src={ imagesEthcoreBlock }
-        className={ styles.parityIcon }
-      />
-    );
-
-    const parityButton = (
-      <Button
-        className={ styles.parityButton }
-        icon={ parityIcon }
-        label={ this.renderLabel('Parity') }
-      />
-    );
-
     return (
       <div
         className={ styles.cornercolor }
         ref={ this.onRef }
       >
-        { this.renderLink(parityButton) }
+        {
+          this.renderLink(
+            <Button
+              className={ styles.parityButton }
+              icon={
+                <img
+                  className={ styles.parityIcon }
+                  src={ imagesEthcoreBlock }
+                />
+              }
+              label={
+                this.renderLabel(
+                  <FormattedMessage
+                    id='parityBar.label.parity'
+                    defaultMessage='Parity'
+                  />
+                )
+              }
+            />
+          )
+        }
         <Button
           className={ styles.button }
           icon={ <FingerprintIcon /> }
           label={ this.renderSignerLabel() }
           onClick={ this.toggleDisplay }
         />
-
         { this.renderDrag() }
       </div>
     );
@@ -307,7 +313,13 @@ class ParityBar extends Component {
       );
     }
 
-    return this.renderLabel('Signer', bubble);
+    return this.renderLabel(
+      <FormattedMessage
+        id='parityBar.label.signer'
+        defaultMessage='Signer'
+      />,
+      bubble
+    );
   }
 
   getHorizontal (x) {

js/src/views/ParityBar/parityBar.spec.js

@@ -0,0 +1,157 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { shallow } from 'enzyme';
+import React from 'react';
+import sinon from 'sinon';
+
+import ParityBar from './';
+
+let component;
+let instance;
+let store;
+
+function createRedux (state = {}) {
+  store = {
+    dispatch: sinon.stub(),
+    subscribe: sinon.stub(),
+    getState: () => Object.assign({ signer: { pending: [] } }, state)
+  };
+
+  return store;
+}
+
+function render (props = {}, state = {}) {
+  component = shallow(
+    <ParityBar { ...props } />,
+    {
+      context: {
+        store: createRedux(state)
+      }
+    }
+  ).find('ParityBar').shallow({ context: { api: {} } });
+  instance = component.instance();
+
+  return component;
+}
+
+describe('views/ParityBar', () => {
+  beforeEach(() => {
+    render({ dapp: true });
+  });
+
+  it('renders defaults', () => {
+    expect(component).to.be.ok;
+  });
+
+  it('includes the ParityBackground', () => {
+    expect(component.find('Connect(ParityBackground)')).to.have.length(1);
+  });
+
+  describe('renderBar', () => {
+    let bar;
+
+    beforeEach(() => {
+      bar = shallow(instance.renderBar());
+    });
+
+    it('renders nothing when not overlaying a dapp', () => {
+      render({ dapp: false });
+      expect(instance.renderBar()).to.be.null;
+    });
+
+    it('renders when overlaying a dapp', () => {
+      expect(bar.find('div')).not.to.have.length(0);
+    });
+
+    it('renders the Parity button', () => {
+      const label = shallow(bar.find('Button').first().props().label);
+
+      expect(label.find('FormattedMessage').props().id).to.equal('parityBar.label.parity');
+    });
+
+    it('renders the Signer button', () => {
+      const label = shallow(bar.find('Button').last().props().label);
+
+      expect(label.find('FormattedMessage').props().id).to.equal('parityBar.label.signer');
+    });
+  });
+
+  describe('renderExpanded', () => {
+    let expanded;
+
+    beforeEach(() => {
+      expanded = shallow(instance.renderExpanded());
+    });
+
+    it('includes the Signer', () => {
+      expect(expanded.find('Connect(Embedded)')).to.have.length(1);
+    });
+  });
+
+  describe('renderLabel', () => {
+    it('renders the label name', () => {
+      expect(shallow(instance.renderLabel('testing', null)).text()).to.equal('testing');
+    });
+
+    it('renders name and bubble', () => {
+      expect(shallow(instance.renderLabel('testing', '(bubble)')).text()).to.equal('testing(bubble)');
+    });
+  });
+
+  describe('renderSignerLabel', () => {
+    let label;
+
+    beforeEach(() => {
+      label = shallow(instance.renderSignerLabel());
+    });
+
+    it('renders the signer label', () => {
+      expect(label.find('FormattedMessage').props().id).to.equal('parityBar.label.signer');
+    });
+
+    it('does not render a badge when no pending requests', () => {
+      expect(label.find('Badge')).to.have.length(0);
+    });
+
+    it('renders a badge when pending requests', () => {
+      render({}, { signer: { pending: ['123', '456'] } });
+      expect(shallow(instance.renderSignerLabel()).find('Badge').props().value).to.equal(2);
+    });
+  });
+
+  describe('opened state', () => {
+    beforeEach(() => {
+      sinon.spy(instance, 'renderBar');
+      sinon.spy(instance, 'renderExpanded');
+    });
+
+    afterEach(() => {
+      instance.renderBar.restore();
+      instance.renderExpanded.restore();
+    });
+
+    it('renders the bar on with opened === false', () => {
+      expect(component.find('Link[to="/apps"]')).to.have.length(1);
+    });
+
+    it('renders expanded with opened === true', () => {
+      expect(instance.renderExpanded).not.to.have.been.called;
+      instance.setState({ opened: true });
+      expect(instance.renderExpanded).to.have.been.called;
+    });
+  });
+});

js/src/views/Settings/Parity/parity.js

@@ -14,67 +14,28 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
+import { MenuItem } from 'material-ui';
+import { observer } from 'mobx-react';
 import React, { Component, PropTypes } from 'react';
 import { FormattedMessage } from 'react-intl';
-import { MenuItem } from 'material-ui';
-import LogLevel from 'loglevel';
 
-import { LOG_KEYS } from '~/config';
 import { Select, Container, LanguageSelector } from '~/ui';
+import Features, { FeaturesStore, FEATURES } from '~/ui/Features';
 
+import Store, { LOGLEVEL_OPTIONS } from './store';
 import layout from '../layout.css';
 
+@observer
 export default class Parity extends Component {
   static contextTypes = {
     api: PropTypes.object.isRequired
   };
 
-  state = {
-    loglevels: {},
-    mode: 'active',
-    selectValues: []
-  };
+  store = new Store(this.context.api);
+  features = FeaturesStore.get();
 
   componentWillMount () {
-    this.loadMode();
-    this.loadLogLevels();
-    this.setSelectValues();
-  }
-
-  loadLogLevels () {
-    if (process.env.NODE_ENV === 'production') {
-      return null;
-    }
-
-    const nextState = { ...this.state.logLevels };
-
-    Object.keys(LOG_KEYS).map((logKey) => {
-      const log = LOG_KEYS[logKey];
-
-      const logger = LogLevel.getLogger(log.key);
-      const level = logger.getLevel();
-
-      nextState[logKey] = { level, log };
-    });
-
-    this.setState({ logLevels: nextState });
-  }
-
-  setSelectValues () {
-    if (process.env.NODE_ENV === 'production') {
-      return null;
-    }
-
-    const selectValues = Object.keys(LogLevel.levels).map((levelName) => {
-      const value = LogLevel.levels[levelName];
-
-      return {
-        name: levelName,
-        value
-      };
-    });
-
-    this.setState({ selectValues });
+    return this.store.loadMode();
   }
 
   render () {
@@ -94,18 +55,30 @@ export default class Parity extends Component {
             </div>
           </div>
           <div className={ layout.details }>
-            <LanguageSelector />
             { this.renderModes() }
+            <Features />
+            <LanguageSelector />
           </div>
         </div>
-
         { this.renderLogsConfig() }
       </Container>
     );
   }
 
+  renderItem (mode, label) {
+    return (
+      <MenuItem
+        key={ mode }
+        label={ label }
+        value={ mode }
+      >
+        { label }
+      </MenuItem>
+    );
+  }
+
   renderLogsConfig () {
-    if (process.env.NODE_ENV === 'production') {
+    if (!this.features.active[FEATURES.LOGLEVELS]) {
       return null;
     }
 
@@ -127,129 +100,89 @@ export default class Parity extends Component {
   }
 
   renderLogsLevels () {
-    if (process.env.NODE_ENV === 'production') {
-      return null;
-    }
+    const { logLevels } = this.store;
 
-    const { logLevels, selectValues } = this.state;
+    return Object
+      .keys(logLevels)
+      .map((key) => {
+        const { level, log } = logLevels[key];
+        const { path, desc } = log;
 
-    return Object.keys(logLevels).map((logKey) => {
-      const { level, log } = logLevels[logKey];
-      const { key, desc } = log;
+        const onChange = (_, index) => {
+          this.store.updateLoggerLevel(path, Object.values(LOGLEVEL_OPTIONS)[index].value);
+        };
 
-      const onChange = (_, index) => {
-        const nextLevel = Object.values(selectValues)[index].value;
-
-        LogLevel.getLogger(key).setLevel(nextLevel);
-        this.loadLogLevels();
-      };
-
-      return (
-        <div key={ logKey }>
-          <p>{ desc }</p>
-          <Select
-            onChange={ onChange }
-            value={ level }
-            values={ selectValues }
-          />
-        </div>
-      );
-    });
+        return (
+          <div key={ key }>
+            <p>{ desc }</p>
+            <Select
+              onChange={ onChange }
+              value={ level }
+              values={ LOGLEVEL_OPTIONS }
+            />
+          </div>
+        );
+      });
   }
 
   renderModes () {
-    const { mode } = this.state;
-
-    const renderItem = (mode, label) => {
-      return (
-        <MenuItem
-          key={ mode }
-          value={ mode }
-          label={ label }
-        >
-          { label }
-        </MenuItem>
-      );
-    };
+    const { mode } = this.store;
 
     return (
       <Select
-        label={
-          <FormattedMessage
-            id='settings.parity.modes.label'
-            defaultMessage='mode of operation'
-          />
-        }
+        id='parityModeSelect'
         hint={
           <FormattedMessage
             id='settings.parity.modes.hint'
             defaultMessage='the syning mode for the Parity node'
           />
         }
-        value={ mode }
+        label={
+          <FormattedMessage
+            id='settings.parity.modes.label'
+            defaultMessage='mode of operation'
+          />
+        }
         onChange={ this.onChangeMode }
+        value={ mode }
       >
         {
-          renderItem('active',
+          this.renderItem('active', (
             <FormattedMessage
               id='settings.parity.modes.mode_active'
               defaultMessage='Parity continuously syncs the chain'
             />
-          )
+          ))
         }
         {
-          renderItem('passive',
+          this.renderItem('passive', (
             <FormattedMessage
               id='settings.parity.modes.mode_passive'
               defaultMessage='Parity syncs initially, then sleeps and wakes regularly to resync'
             />
-          )
+          ))
         }
         {
-          renderItem('dark',
+          this.renderItem('dark', (
             <FormattedMessage
               id='settings.parity.modes.mode_dark'
               defaultMessage='Parity syncs only when the RPC is active'
             />
-          )
+          ))
         }
         {
-          renderItem('offline',
+          this.renderItem('offline', (
             <FormattedMessage
               id='settings.parity.modes.mode_offline'
               defaultMessage="Parity doesn't sync"
             />
-          )
+          ))
         }
       </Select>
     );
   }
 
   onChangeMode = (event, index, mode) => {
-    const { api } = this.context;
-
-    api.parity
-      .setMode(mode)
-      .then((result) => {
-        if (result) {
-          this.setState({ mode });
-        }
-      })
-      .catch((error) => {
-        console.warn('onChangeMode', error);
-      });
-  }
-
-  loadMode () {
-    const { api } = this.context;
-
-    api.parity
-      .mode()
-      .then((mode) => {
-        this.setState({ mode });
-      })
-      .catch((error) => {
-        console.warn('loadMode', error);
-      });
+    this.store.changeMode(mode || event.target.value);
   }
 }

js/src/views/Settings/Parity/parity.spec.js

@@ -0,0 +1,98 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import { shallow } from 'enzyme';
+import React from 'react';
+import sinon from 'sinon';
+
+import { createApi } from './parity.test.js';
+import Parity from './';
+
+let component;
+let instance;
+
+function render (props = {}) {
+  component = shallow(
+    <Parity { ...props } />,
+    { context: { api: createApi() } }
+  );
+  instance = component.instance();
+
+  return component;
+}
+
+describe('views/Settings/Parity', () => {
+  beforeEach(() => {
+    render();
+    sinon.spy(instance.store, 'loadMode');
+  });
+
+  afterEach(() => {
+    instance.store.loadMode.restore();
+  });
+
+  it('renders defaults', () => {
+    expect(component).to.be.ok;
+  });
+
+  describe('componentWillMount', () => {
+    beforeEach(() => {
+      return instance.componentWillMount();
+    });
+
+    it('loads the mode in the store', () => {
+      expect(instance.store.loadMode).to.have.been.called;
+    });
+  });
+
+  describe('components', () => {
+    it('renders a Container component', () => {
+      expect(component.find('Container')).to.have.length(1);
+    });
+
+    it('renders a LanguageSelector component', () => {
+      expect(component.find('LanguageSelector')).to.have.length(1);
+    });
+
+    it('renders a Features component', () => {
+      expect(component.find('LanguageSelector')).to.have.length(1);
+    });
+  });
+
+  describe('Parity features', () => {
+    describe('mode selector', () => {
+      let select;
+
+      beforeEach(() => {
+        select = component.find('Select[id="parityModeSelect"]');
+        sinon.spy(instance.store, 'changeMode');
+      });
+
+      afterEach(() => {
+        instance.store.changeMode.restore();
+      });
+
+      it('renders a mode selector', () => {
+        expect(select).to.have.length(1);
+      });
+
+      it('changes the mode on the store when changed', () => {
+        select.simulate('change', { target: { value: 'dark' } });
+        expect(instance.store.changeMode).to.have.been.calledWith('dark');
+      });
+    });
+  });
+});

js/src/views/Settings/Parity/parity.test.js

@@ -0,0 +1,30 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import sinon from 'sinon';
+
+function createApi () {
+  return {
+    parity: {
+      mode: sinon.stub().resolves('passive'),
+      setMode: sinon.stub().resolves(true)
+    }
+  };
+}
+
+export {
+  createApi
+};

js/src/views/Settings/Parity/store.js

@@ -0,0 +1,105 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import LogLevel from 'loglevel';
+import { action, observable } from 'mobx';
+
+import { LOG_KEYS } from '~/config';
+
+const DEFAULT_MODE = 'active';
+const LOGLEVEL_OPTIONS = Object
+  .keys(LogLevel.levels)
+  .map((name) => {
+    return {
+      name,
+      value: LogLevel.levels[name]
+    };
+  });
+
+export default class Store {
+  @observable logLevels = {};
+  @observable mode = DEFAULT_MODE;
+
+  constructor (api) {
+    this._api = api;
+
+    this.loadLogLevels();
+  }
+
+  @action setLogLevels = (logLevels) => {
+    this.logLevels = logLevels;
+  }
+
+  @action setLogLevelsSelect = (logLevelsSelect) => {
+    this.logLevelsSelect = logLevelsSelect;
+  }
+
+  @action setMode = (mode) => {
+    this.mode = mode;
+  }
+
+  changeMode (mode) {
+    return this._api.parity
+      .setMode(mode)
+      .then((result) => {
+        if (result) {
+          this.setMode(mode);
+        }
+      })
+      .catch((error) => {
+        console.warn('changeMode', error);
+      });
+  }
+
+  loadLogLevels () {
+    this.setLogLevels(
+      Object
+        .keys(LOG_KEYS)
+        .reduce((state, logKey) => {
+          const log = LOG_KEYS[logKey];
+          const logger = LogLevel.getLogger(log.key);
+          const level = logger.getLevel();
+
+          state[logKey] = {
+            level,
+            log
+          };
+
+          return state;
+        }, this.logLevels)
+    );
+  }
+
+  updateLoggerLevel (path, level) {
+    LogLevel.getLogger(path).setLevel(level);
+    this.loadLogLevels();
+  }
+
+  loadMode () {
+    return this._api.parity
+      .mode()
+      .then((mode) => {
+        this.setMode(mode);
+      })
+      .catch((error) => {
+        console.warn('loadMode', error);
+      });
+  }
+}
+
+export {
+  LOGLEVEL_OPTIONS
+};

js/src/views/Settings/Parity/store.spec.js

@@ -0,0 +1,84 @@
+// Copyright 2015, 2016 Parity Technologies (UK) Ltd.
+// This file is part of Parity.
+
+// Parity is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Parity is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Parity.  If not, see <http://www.gnu.org/licenses/>.
+
+import sinon from 'sinon';
+
+import { createApi } from './parity.test.js';
+import Store from './store';
+
+let api;
+let store;
+
+function createStore () {
+  api = createApi();
+  store = new Store(api);
+
+  return store;
+}
+
+describe('views/Settings/Parity/Store', () => {
+  beforeEach(() => {
+    createStore();
+    sinon.spy(store, 'setMode');
+  });
+
+  afterEach(() => {
+    store.setMode.restore();
+  });
+
+  it('defaults to mode === active', () => {
+    expect(store.mode).to.equal('active');
+  });
+
+  describe('@action', () => {
+    describe('setMode', () => {
+      it('sets the mode', () => {
+        store.setMode('offline');
+        expect(store.mode).to.equal('offline');
+      });
+    });
+  });
+
+  describe('operations', () => {
+    describe('changeMode', () => {
+      beforeEach(() => {
+        return store.changeMode('offline');
+      });
+
+      it('calls parity.setMode', () => {
+        expect(api.parity.setMode).to.have.been.calledWith('offline');
+      });
+
+      it('sets the mode as provided', () => {
+        expect(store.setMode).to.have.been.calledWith('offline');
+      });
+    });
+
+    describe('loadMode', () => {
+      beforeEach(() => {
+        return store.loadMode();
+      });
+
+      it('calls parity.mode', () => {
+        expect(api.parity.mode).to.have.been.called;
+      });
+
+      it('sets the mode as retrieved', () => {
+        expect(store.setMode).to.have.been.calledWith('passive');
+      });
+    });
+  });
+});

js/webpack/app.js

@@ -117,8 +117,13 @@ module.exports = {
         test: /\.(woff(2)|ttf|eot|otf)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
         use: [ 'file-loader?name=fonts/[name][hash:10].[ext]' ]
       },
+      {
+        test: /parity-logo-white-no-text\.svg/,
+        use: [ 'url-loader' ]
+      },
       {
         test: /\.svg(\?v=[0-9]\.[0-9]\.[0-9])?$/,
+        exclude: [ /parity-logo-white-no-text\.svg/ ],
         use: [ 'file-loader?name=assets/[name].[hash:10].[ext]' ]
       }
     ],