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diff --git a/history/modules/__tests__/BrowserHistory-test.js b/history/modules/__tests__/BrowserHistory-test.js
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+++ b/history/modules/__tests__/BrowserHistory-test.js
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+import expect from 'expect';
+import { createBrowserHistory } from 'history';
+
+import * as TestSequences from './TestSequences/index.js';
+
+describe('a browser history', () => {
+  let history;
+  beforeEach(() => {
+    if (window.location.pathname !== '/') {
+      window.history.replaceState(null, null, '/');
+    }
+    history = createBrowserHistory();
+  });
+
+  it('knows how to create hrefs', () => {
+    const href = history.createHref({
+      pathname: '/the/path',
+      search: '?the=query',
+      hash: '#the-hash'
+    });
+
+    expect(href).toEqual('/the/path?the=query#the-hash');
+  });
+
+  it('does not encode the generated path', () => {
+    // encoded
+    const encodedHref = history.createHref({
+      pathname: '/%23abc'
+    });
+    // unencoded
+    const unencodedHref = history.createHref({
+      pathname: '/#abc'
+    });
+
+    expect(encodedHref).toEqual('/%23abc');
+    expect(unencodedHref).toEqual('/#abc');
+  });
+
+  describe('listen', () => {
+    it('does not immediately call listeners', done => {
+      TestSequences.Listen(history, done);
+    });
+  });
+
+  describe('the initial location', () => {
+    it('does not have a key', done => {
+      TestSequences.InitialLocationNoKey(history, done);
+    });
+  });
+
+  describe('push a new path', () => {
+    it('calls change listeners with the new location', done => {
+      TestSequences.PushNewLocation(history, done);
+    });
+  });
+
+  describe('push the same path', () => {
+    it('calls change listeners with the new location', done => {
+      TestSequences.PushSamePath(history, done);
+    });
+  });
+
+  describe('push state', () => {
+    it('calls change listeners with the new location', done => {
+      TestSequences.PushState(history, done);
+    });
+  });
+
+  describe('push with no pathname', () => {
+    it('calls change listeners with the normalized location', done => {
+      TestSequences.PushMissingPathname(history, done);
+    });
+  });
+
+  describe('push with a relative pathname', () => {
+    it('calls change listeners with the normalized location', done => {
+      TestSequences.PushRelativePathname(history, done);
+    });
+  });
+
+  describe('push with an invalid pathname (bad percent-encoding)', () => {
+    it('throws an error', done => {
+      TestSequences.PushInvalidPathname(history, done);
+    });
+  });
+
+  describe('push with a unicode path string', () => {
+    it('creates a location with decoded properties', done => {
+      TestSequences.PushUnicodeLocation(history, done);
+    });
+  });
+
+  describe('push with an encoded path string', () => {
+    it('creates a location object with encoded pathname', done => {
+      TestSequences.PushEncodedLocation(history, done);
+    });
+  });
+
+  describe('replace a new path', () => {
+    it('calls change listeners with the new location', done => {
+      TestSequences.ReplaceNewLocation(history, done);
+    });
+  });
+
+  describe('replace the same path', () => {
+    it('calls change listeners with the new location', done => {
+      TestSequences.ReplaceSamePath(history, done);
+    });
+  });
+
+  describe('replace with an invalid pathname (bad percent-encoding)', () => {
+    it('throws an error', done => {
+      TestSequences.ReplaceInvalidPathname(history, done);
+    });
+  });
+
+  describe('replace state', () => {
+    it('calls change listeners with the new location', done => {
+      TestSequences.ReplaceState(history, done);
+    });
+  });
+
+  describe('location created by encoded and unencoded pathname', () => {
+    it('produces the same location.pathname', done => {
+      TestSequences.LocationPathnameAlwaysSame(history, done);
+    });
+  });
+
+  describe('location created with encoded/unencoded reserved characters', () => {
+    it('produces different location objects', done => {
+      TestSequences.EncodedReservedCharacters(history, done);
+    });
+  });
+
+  describe('goBack', () => {
+    it('calls change listeners with the previous location', done => {
+      TestSequences.GoBack(history, done);
+    });
+  });
+
+  describe('goForward', () => {
+    it('calls change listeners with the next location', done => {
+      TestSequences.GoForward(history, done);
+    });
+  });
+
+  describe('block', () => {
+    it('blocks all transitions', done => {
+      TestSequences.BlockEverything(history, done);
+    });
+  });
+
+  describe('block a POP without listening', () => {
+    it('receives the next location and action as arguments', done => {
+      TestSequences.BlockPopWithoutListening(history, done);
+    });
+  });
+
+  describe('that accepts all transitions', () => {
+    let history;
+    beforeEach(() => {
+      history = createBrowserHistory({
+        getUserConfirmation(_, callback) {
+          callback(true);
+        }
+      });
+    });
+
+    it('receives the next location and action as arguments', done => {
+      TestSequences.TransitionHookArgs(history, done);
+    });
+
+    it('cancels the transition when it returns false', done => {
+      TestSequences.ReturnFalseTransitionHook(history, done);
+    });
+
+    it('is called when the back button is clicked', done => {
+      TestSequences.BackButtonTransitionHook(history, done);
+    });
+
+    it('is called on the hashchange event', done => {
+      TestSequences.HashChangeTransitionHook(history, done);
+    });
+  });
+
+  describe('that denies all transitions', () => {
+    let history;
+    beforeEach(() => {
+      history = createBrowserHistory({
+        getUserConfirmation(_, callback) {
+          callback(false);
+        }
+      });
+    });
+
+    describe('clicking on a link (push)', () => {
+      it('does not update the location', done => {
+        TestSequences.DenyPush(history, done);
+      });
+    });
+
+    describe('clicking the back button (goBack)', () => {
+      it('does not update the location', done => {
+        TestSequences.DenyGoBack(history, done);
+      });
+    });
+
+    describe('clicking the forward button (goForward)', () => {
+      it('does not update the location', done => {
+        TestSequences.DenyGoForward(history, done);
+      });
+    });
+  });
+});