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var DLL = require('../lib/internal/DoublyLinkedList').default;
var expect = require('chai').expect;
describe('DoublyLinkedList', function () {
it('toArray', function() {
var list = new DLL();
expect(list.toArray()).to.eql([]);
for (var i = 0; i < 5; i++) {
list.push({data: i});
}
expect(list.toArray()).to.eql([0, 1, 2, 3, 4]);
});
it('remove', function() {
var list = new DLL();
for (var i = 0; i < 5; i++) {
list.push({data: i});
}
list.remove(function (node) {
return node.data === 3;
})
expect(list.toArray()).to.eql([0, 1, 2, 4]);
});
it('remove (head)', function() {
var list = new DLL();
for (var i = 0; i < 5; i++) {
list.push({data: i});
}
list.remove(function (node) {
return node.data === 0;
})
expect(list.toArray()).to.eql([1, 2, 3, 4]);
});
it('remove (tail)', function() {
var list = new DLL();
for (var i = 0; i < 5; i++) {
list.push({data: i});
}
list.remove(function (node) {
return node.data === 4;
})
expect(list.toArray()).to.eql([0, 1, 2, 3]);
});
it('remove (all)', function() {
var list = new DLL();
for (var i = 0; i < 5; i++) {
list.push({data: i});
}
list.remove(function (node) {
return node.data < 5;
})
expect(list.toArray()).to.eql([]);
});
it('empty', function() {
var list = new DLL();
for (var i = 0; i < 5; i++) {
list.push({data: i});
}
var empty = list.empty();
expect(list).to.equal(empty);
expect(list.toArray()).to.eql([]);
});
});
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