Jasmine Test - Unknown provider $sceProvider

I am trying to write a jasmine test for my filter. Here is my filter:

angular.module('CPSCore.Filters').filter('TextToHtmlSafe', ['$sce', function     ($sce)
{
return function (text)
{
        if (!text)
            return text;

        var htmlText = text.replace(/\<br \/\>/g, '\n');
        htmlText = htmlText.replace(/\<br\/\>/g, '\n');
        htmlText = htmlText.replace(/\<br\>/g, '\n');
        htmlText = htmlText.replace(/\</g, '< ');
        htmlText = htmlText.replace(/\&/g, '& ');
        htmlText = htmlText.replace(/\n/g, '<br />');
        return $sce.trustAsHtml(htmlText);

   };
 }]);

here is my jasmine test:

describe('CPSCore.Filters', function() {

var TextToHtmlSafeFilter, $sce;

beforeEach(module('CPSCore.Filters'));
beforeEach(inject(function (_$sce_, $filter) {
    $sce = _$sce_;
    TextToHtmlSafeFilter = $filter('TextToHtmlSafe');
}));



it('should replace \n with <br />', function () {
    expect($sce.getTrustedHtml(TextToHtmlSafeFilter('testing\n'))).toEqual('testing<br />');       

});



});

I am receiving this error in Karma when running the test:

Error: Unknown provider: $sceProvider <- $sce

can anyone tell me what I'm doing wrong?