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describe('preDrawCallback option', function() {
dt.libs({
js: ['jquery', 'datatables'],
css: ['datatables']
});
describe('Check the arguments', function() {
let args;
let table;
dt.html('basic');
it('Default should not be true', function() {
table = $('#example').DataTable();
expect($.fn.dataTable.defaults.fnpreDrawCallback).not.toBe(true);
});
dt.html('basic');
it('Count arguments', function() {
table = $('#example').DataTable({
preDrawCallback: function() {
args = arguments;
return true;
}
});
expect(args.length).toBe(1);
});
it('First arg is the settings', function() {
expect(args[0]).toBe(table.settings()[0]);
});
});
describe('Functional tests', function() {
let count = 0;
let drawCount = 0;
let response = true;
dt.html('basic');
it('preDrawCallback called once on first draw', function() {
table = $('#example').DataTable({
preDrawCallback: function() {
count++;
return response;
},
drawCallback: function() {
drawCount++;
}
});
expect(count).toBe(1);
expect(drawCount).toBe(1);
});
it('preDrawCallback called once after each draw', function() {
$('.paginate_button.next').click();
$('.paginate_button.next').click();
$('.paginate_button.next').click();
expect(count).toBe(4);
expect(drawCount).toBe(4);
});
it('Able to cancel draw', function() {
response = false;
table.page(1).draw(false);
expect(count).toBe(5);
expect(drawCount).toBe(4);
expect($('div.dataTables_info').text()).toBe('Showing 31 to 40 of 57 entries');
});
});
});
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