can hasPreviousPage and hasNextPage both be true?

[MattMcFarland]

Looking at this test case:

graphql-relay-js/src/connection/__tests__/arrayconnection.js

Lines 172 to 196 in 7422cfe

	describe('pagination', () => {
	it('respects first and after', () => {
	var c = connectionFromArray(
	letters,
	{first: 2, after: 'YXJyYXljb25uZWN0aW9uOjE='}
	);
	return expect(c).to.deep.equal({
	edges: [
	{
	node: 'C',
	cursor: 'YXJyYXljb25uZWN0aW9uOjI=',
	},
	{
	node: 'D',
	cursor: 'YXJyYXljb25uZWN0aW9uOjM=',
	},
	],
	pageInfo: {
	startCursor: 'YXJyYXljb25uZWN0aW9uOjI=',
	endCursor: 'YXJyYXljb25uZWN0aW9uOjM=',
	hasPreviousPage: false,
	hasNextPage: true,
	}
	});
	});

  describe('pagination', () => {
    it('respects first and after', () => {
      var c = connectionFromArray(
        letters,
        {first: 2, after: 'YXJyYXljb25uZWN0aW9uOjE='}
      );
      return expect(c).to.deep.equal({
        edges: [
          {
            node: 'C',
            cursor: 'YXJyYXljb25uZWN0aW9uOjI=',
          },
          {
            node: 'D',
            cursor: 'YXJyYXljb25uZWN0aW9uOjM=',
          },
        ],
        pageInfo: {
          startCursor: 'YXJyYXljb25uZWN0aW9uOjI=',
          endCursor: 'YXJyYXljb25uZWN0aW9uOjM=',
          hasPreviousPage: false,
          hasNextPage: true,
        }
      });
    });

Because there is also an A and a B - shouldn't hasPreviousPage be true? If not, then how do we know there is a previous page available??

[MattMcFarland]

Nevermind, found my answer here: https://facebook.github.io/relay/graphql/connections.htm#sec-Pagination-algorithm