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describe('footerCallback Option', function() {
dt.libs({
js: ['jquery', 'datatables'],
css: ['datatables']
});
describe('Check the arguments', function() {
let args;
dt.html('basic');
it('Default should not be true', function() {
$('#example').dataTable();
expect($.fn.dataTable.defaults.fnFooterCallback).not.toBe(true);
});
dt.html('basic');
it('Five arguments', function() {
$('#example').DataTable({
footerCallback: function() {
args = arguments;
$(args[0])
.find('th')
.eq(0)
.html('unit test');
}
});
expect(args.length).toBe(5);
});
it('First arg is the tfoot', function() {
expect(args[0] instanceof HTMLTableRowElement).toBe(true);
});
it('Second arg is data', function() {
expect(args[1] instanceof Array).toBe(true);
});
it('Third arg is start position', function() {
expect(typeof args[2]).toBe('number');
});
it('Fourth arg is end position', function() {
expect(typeof args[3]).toBe('number');
});
it('Fifth arg is index array', function() {
expect(args[4] instanceof Array).toBe(true);
});
it('Return value is used', function() {
expect($('table tfoot tr th:eq(0)').text()).toBe('unit test');
});
});
describe('Functional tests', function() {
let args;
let count = 0;
let table;
dt.html('basic');
it('Called only on a draw', function() {
table = $('#example').DataTable({
footerCallback: function() {
count++;
args = arguments;
}
});
expect(count).toBe(1);
});
it('Subsequent draws call the function', function() {
table.draw();
expect(count).toBe(2);
});
it('Start contains correct page information', function() {
expect(args[2]).toBe(0);
});
it('End contains correct page information', function() {
expect(args[3]).toBe(10);
});
it('Called on paging (ie another draw)', function() {
$('a.paginate_button.next').click();
expect(count).toBe(3);
});
it('Data array has length matching original data', function() {
expect(args[1].length).toBe(57);
});
it('Start contains correct page information', function() {
expect(args[2]).toBe(10);
});
it('End contains correct page information', function() {
expect(args[3]).toBe(20);
});
it('Display length is full data when not filtered', function() {
expect(args[4].length).toBe(57);
});
it('Display length is 12 when filtering on London', function() {
table.search('London').draw();
expect(args[4].length).toBe(12);
});
});
});
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