package org.gitlab.api;

import org.gitlab.api.http.Query;

import org.junit.Test;

import java.io.UnsupportedEncodingException;

import static org.junit.Assert.assertEquals;

public class PaginationTest {

@Test

public void emptyPagination() {

Pagination pagination = new Pagination();

final Query expectedQuery = new Query();

assertEquals(expectedQuery.toString(), pagination.toString());

assertEquals(expectedQuery.toString(), pagination.asQuery().toString());

}

@Test

public void pageOnlyPagination() throws UnsupportedEncodingException {

Pagination pagination = new Pagination();

pagination.setPage(1);

final Query expectedQuery = new Query()

.append(Pagination.PARAM_PAGE, "1");

assertEquals(expectedQuery.toString(), pagination.toString());

assertEquals(expectedQuery.toString(), pagination.asQuery().toString());

}

@Test

public void perPageOnlyPagination() throws UnsupportedEncodingException {

Pagination pagination = new Pagination();

pagination.setPerPage(50);

final Query expectedQuery = new Query()

.append(Pagination.PARAM_PER_PAGE, "50");

assertEquals(expectedQuery.toString(), pagination.toString());

assertEquals(expectedQuery.toString(), pagination.asQuery().toString());

}

@Test(expected = IllegalArgumentException.class)

public void perPageException() {

Pagination pagination = new Pagination();

pagination.setPerPage(Pagination.MAX_ITEMS_PER_PAGE + 1);

}

@Test

public void complexPagination() throws UnsupportedEncodingException {

Pagination pagination = new Pagination();

pagination.setPage(1);

pagination.setPerPage(50);

final Query expectedQuery = new Query()

.append(Pagination.PARAM_PAGE, "1")

.append(Pagination.PARAM_PER_PAGE, "50");

assertEquals(expectedQuery.toString(), pagination.toString());

assertEquals(expectedQuery.toString(), pagination.asQuery().toString());

}

@Test

public void maxItemsPerPage() throws Exception {

Pagination pagination = new Pagination().withPerPage(Pagination.MAX_ITEMS_PER_PAGE);

assertEquals(String.format("?%s=%d", Pagination.PARAM_PER_PAGE, Pagination.MAX_ITEMS_PER_PAGE), pagination.toString());

}

}