diff --git a/client/src/js/__tests__/reducer-tab.test.js b/client/src/js/__tests__/reducer-tab.test.js
new file mode 100644
index 00000000..85f36092
--- /dev/null
+++ b/client/src/js/__tests__/reducer-tab.test.js
@@ -0,0 +1,107 @@
+import { LOCATION_CHANGE } from 'react-router-redux';
+import reducer from '../reducers/tab';
+import * as actions from '../actions';
+import { setSelectedTab } from '../actions/tab';
+
+describe('reducers/tab', () => {
+  it('sets the tab and adds it to history', () => {
+    let state = reducer(undefined, setSelectedTab('srv', '#chan'));
+
+    expect(state.toJS()).toEqual({
+      selected: { server: 'srv', name: '#chan' },
+      history: [
+        { server: 'srv', name: '#chan' }
+      ]
+    });
+
+    state = reducer(state, setSelectedTab('srv', 'user1'));
+
+    expect(state.toJS()).toEqual({
+      selected: { server: 'srv', name: 'user1' },
+      history: [
+        { server: 'srv', name: '#chan' },
+        { server: 'srv', name: 'user1' }
+      ]
+    });
+  });
+
+  it('removes the tab from history on PART', () => {
+    let state = reducer(undefined, setSelectedTab('srv', '#chan'));
+    state = reducer(state, setSelectedTab('srv1', 'bob'));
+    state = reducer(state, setSelectedTab('srv', '#chan'));
+    state = reducer(state, setSelectedTab('srv', '#chan3'));
+
+    state = reducer(state, {
+      type: actions.PART,
+      server: 'srv',
+      channels: ['#chan']
+    });
+
+    expect(state.toJS()).toEqual({
+      selected: { server: 'srv', name: '#chan3' },
+      history: [
+        { server: 'srv1', name: 'bob' },
+        { server: 'srv', name: '#chan3' }
+      ]
+    });
+  });
+
+  it('removes the tab from history on CLOSE_PRIVATE_CHAT', () => {
+    let state = reducer(undefined, setSelectedTab('srv', '#chan'));
+    state = reducer(state, setSelectedTab('srv1', 'bob'));
+    state = reducer(state, setSelectedTab('srv', '#chan'));
+    state = reducer(state, setSelectedTab('srv', '#chan3'));
+
+    state = reducer(state, {
+      type: actions.CLOSE_PRIVATE_CHAT,
+      server: 'srv1',
+      nick: 'bob'
+    });
+
+    expect(state.toJS()).toEqual({
+      selected: { server: 'srv', name: '#chan3' },
+      history: [
+        { server: 'srv', name: '#chan' },
+        { server: 'srv', name: '#chan' },
+        { server: 'srv', name: '#chan3' }
+      ]
+    });
+  });
+
+  it('removes all tabs related to server from history on DISCONNECT', () => {
+    let state = reducer(undefined, setSelectedTab('srv', '#chan'));
+    state = reducer(state, setSelectedTab('srv1', 'bob'));
+    state = reducer(state, setSelectedTab('srv', '#chan'));
+    state = reducer(state, setSelectedTab('srv', '#chan3'));
+
+    state = reducer(state, {
+      type: actions.DISCONNECT,
+      server: 'srv',
+    });
+
+    expect(state.toJS()).toEqual({
+      selected: { server: 'srv', name: '#chan3' },
+      history: [
+        { server: 'srv1', name: 'bob' },
+      ]
+    });
+  });
+
+  it('clears the tab when navigating to a non-tab page', () => {
+    let state = reducer(undefined, setSelectedTab('srv', '#chan'));
+
+    state = reducer(state, {
+      type: LOCATION_CHANGE,
+      payload: {
+        pathname: '/settings'
+      }
+    });
+
+    expect(state.toJS()).toEqual({
+      selected: { server: null, name: null },
+      history: [
+        { server: 'srv', name: '#chan' }
+      ]
+    });
+  });
+});