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describe( "headerCallback Option", function() {
dt.libs( {
js: [ 'jquery', 'datatables' ],
css: [ 'datatables' ]
} );
describe("Check the defaults", function () {
dt.html( 'basic' );
it("Default should not be true", function () {
$('#example').dataTable();
expect($.fn.dataTable.defaults.fnHeaderCallback).not.toBe(true);
//$.fn.DataTable.defaults
});
dt.html( 'basic' );
it("Five arguments passed", function () {
test = -1;
$('#example').dataTable( {
"headerCallback": function() {
test = arguments.length;
}
});
expect(test == 5).toBe(true);
});
dt.html( 'basic' );
it("headerCallback called once per draw", function () {
test = 0;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
test++;
}
});
expect(test == 1).toBe(true);
});
it("headerCallback called on on paging (ie another draw)", function () {
$('#example_next').click();
expect(test == 2).toBe(true);
});
dt.html( 'basic' );
it("headerCallback allows us to alter row information", function () {
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
thead.getElementsByTagName('th')[0].innerHTML = "Displaying "+(end-start)+" records";
}
});
expect($('#example thead th:eq(0)').html() == "Displaying 10 records").toBe(true);
});
dt.html( 'basic' );
it("Data array has length matching original data", function () {
test = true;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
if ( data.length != 57){
test = false;
}
}
});
expect(test === true).toBe(true);
});
dt.html( 'basic' );
it("Data array has length matching original data", function () {
test = true;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
for ( var i=0, length=data.length ; i<length ; i++){
if ( data[i].length != 6){
test = false;
}
}
}
});
expect(test === true).toBe(true);
});
dt.html( 'basic' );
it("Start correct on first page", function () {
test = true;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
if ( start !== 0 ){
test = false;
}
}
});
expect(test === true).toBe(true);
});
dt.html( 'basic' );
it("start correct on second page", function () {
test = false;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
if ( start !== 10 ){
test = true;
}
}
});
$('#example_next').click();
expect(test === true).toBe(true);
});
dt.html( 'basic' );
it("end correct on first page", function () {
test = true;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
if ( end !== 10 ){
test = false;
}
}
});
expect(test === true).toBe(true);
});
dt.html( 'basic' );
it("end correct on second page", function () {
test = false;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
if ( end !== 20 ){
test = true;
}
}
});
expect(test === true).toBe(true);
});
dt.html( 'basic' );
it("Display length is full data when not filtered", function () {
test = false;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
if ( display.length == 57 ){
test = true;
}
}
});
expect(test === true).toBe(true);
});
dt.html( 'basic' );
it("Display length is 12 when filtering on London", function () {
test = false;
$('#example').dataTable( {
"headerCallback": function( thead, data, start, end, display ) {
if ( display.length == 12 ){
test = true;
}
}
});
$('#example').DataTable().search('London').draw();
expect(test === true).toBe(true);
});
});
});
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