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test('queryHashAsMap', 2, function() {
    equal(window.location.hash, '#useTestData=true');
    deepEqual(history.queryHashAsMap(), {useTestData: 'true'});
});

test('diffStates', 5, function() {
    var newState = {a: 1, b: 2};
    deepEqual(history._diffStates(null, newState), newState);

    var oldState = {a: 1};
    deepEqual(history._diffStates(oldState, newState), {b: 2});

    // FIXME: This is kind of weird. I think the existing users of this code work correctly, but it's a confusing result.
    var oldState = {c: 1};
    deepEqual(history._diffStates(oldState, newState), {a:1, b: 2});

    var oldState = {a: 1, b: 2};
    deepEqual(history._diffStates(oldState, newState), {});

    var oldState = {a: 2, b: 3};
    deepEqual(history._diffStates(oldState, newState), {a: 1, b: 2});
});

test('parseCrossDashboardParameters', 2, function() {
    var historyInstance = new history.History();
    // FIXME(jparent): Remove this once parseParameters moves onto history obj.
    g_history = historyInstance;
    equal(window.location.hash, '#useTestData=true');
    historyInstance.parseCrossDashboardParameters();

    var expectedParameters = {};
    for (var key in history.DEFAULT_CROSS_DASHBOARD_STATE_VALUES)
        expectedParameters[key] = history.DEFAULT_CROSS_DASHBOARD_STATE_VALUES[key];
    expectedParameters.useTestData = true;

    deepEqual(historyInstance.crossDashboardState, expectedParameters);
});