jasmine/spec/html/QueryStringSpec.js

describe('QueryString', function() {
  describe('#navigateWithNewParam', function() {
    it('sets the query string to include the given key/value pair', function() {
      const windowLocation = {
        search: ''
      };
      const queryString = new jasmineUnderTest.QueryString({
        getWindowLocation: function() {
          return windowLocation;
        }
      });

      queryString.navigateWithNewParam('foo', 'bar baz');

      expect(windowLocation.search).toMatch(/foo=bar%20baz/);
    });

    it('leaves existing params alone', function() {
      const windowLocation = {
        search: '?foo=bar'
      };
      const queryString = new jasmineUnderTest.QueryString({
        getWindowLocation: function() {
          return windowLocation;
        }
      });

      queryString.navigateWithNewParam('baz', 'quux');

      expect(windowLocation.search).toMatch(/foo=bar/);
      expect(windowLocation.search).toMatch(/baz=quux/);
    });
  });

  describe('#fullStringWithNewParam', function() {
    it('gets the query string including the given key/value pair', function() {
      const windowLocation = {
        search: '?foo=bar'
      };
      const queryString = new jasmineUnderTest.QueryString({
        getWindowLocation: function() {
          return windowLocation;
        }
      });

      const result = queryString.fullStringWithNewParam('baz', 'quux');

      expect(result).toMatch(/foo=bar/);
      expect(result).toMatch(/baz=quux/);
    });
  });

  describe('#getParam', function() {
    it('returns the value of the requested key', function() {
      const windowLocation = {
        search: '?baz=quux%20corge'
      };
      const queryString = new jasmineUnderTest.QueryString({
        getWindowLocation: function() {
          return windowLocation;
        }
      });

      expect(queryString.getParam('baz')).toEqual('quux corge');
    });

    it('returns null if the key is not present', function() {
      const windowLocation = {
        search: ''
      };
      const queryString = new jasmineUnderTest.QueryString({
        getWindowLocation: function() {
          return windowLocation;
        }
      });

      expect(queryString.getParam('baz')).toBeFalsy();
    });
  });
});