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"use strict";
function assertList(test, array, list) {
for (let i = 0, ii = array.length; i < ii; i < ii, i++) {
test.assertEqual(
array.length,
list.length,
'list must contain same amount of elements as array'
);
test.assertEqual(
'List(' + array + ')',
list + '',
'toString must output array like result'
);
test.assert(
i in list,
'must contain element with index: ' + i
);
test.assertEqual(
array[i],
list[i],
'element with index: ' + i + ' should match'
);
}
}
const { List } = require('list');
exports['test:test for'] = function(test) {
let fixture = List(3, 2, 1);
test.assertEqual(3, fixture.length, 'length is 3');
let i = 0;
for (let key in fixture) {
test.assertEqual(i++, key, 'key should match');
}
};
exports['test:test for each'] = function(test) {
let fixture = new List(3, 2, 1);
test.assertEqual(3, fixture.length, 'length is 3');
let i = 3;
for each (let value in fixture) {
test.assertEqual(i--, value, 'value should match');
}
};
exports['test: for each using Iterator'] = function(test) {
let fixture = new List(3, 2, 1);
test.assertEqual(3, fixture.length, 'length is 3');
let v = 3, k = 0;
for each (let [key, value] in Iterator(fixture)) {
test.assertEqual(k++, key, 'key should match');
test.assertEqual(v--, value, 'value should match');
}
};
exports['test:test toString'] = function(test) {
let fixture = List(3, 2, 1);
test.assertEqual(
'List(3,2,1)',
fixture + '',
'toString must output array like result'
)
};
exports['test:test constructor with apply'] = function(test) {
let array = ['a', 'b', 'c'];
let fixture = List.apply(null, array);
test.assertEqual(
3,
fixture.length,
'should have applied arguments'
);
};
exports['test:direct element access'] = function(test) {
let array = [1, 'foo', 2, 'bar', {}, 'bar', function a() {}, test, 1];
let fixture = List.apply(null, array);
array.splice(5, 1);
array.splice(7, 1);
test.assertEqual(
array.length,
fixture.length,
'list should omit duplicate elements'
);
test.assertEqual(
'List(' + array + ')',
fixture.toString(),
'elements should not be rearranged'
);
for (let key in array) {
test.assert(key in fixture,'should contain key for index:' + key);
test.assertEqual(
array[key],
fixture[key],
'values should match for: ' + key
);
}
};
exports['test:removing adding elements'] = function(test) {
let array = [1, 'foo', 2, 'bar', {}, 'bar', function a() {}, test, 1];
let fixture = List.compose({
add: function() this._add.apply(this, arguments),
remove: function() this._remove.apply(this, arguments),
clear: function() this._clear()
}).apply(null, array);
array.splice(5, 1);
array.splice(7, 1);
assertList(test, array, fixture);
array.splice(array.indexOf(2), 1);
fixture.remove(2);
assertList(test, array, fixture);
array.splice(array.indexOf('foo'), 1);
fixture.remove('foo');
array.splice(array.indexOf(1), 1);
fixture.remove(1);
array.push('foo');
fixture.add('foo');
assertList(test, array, fixture);
array.splice(0);
fixture.clear(0);
assertList(test, array, fixture);
array.push(1, 'foo', 2, 'bar', 3);
fixture.add(1);
fixture.add('foo');
fixture.add(2);
fixture.add('bar');
fixture.add(3);
assertList(test, array, fixture);
};
exports['test: remove does not leave invalid numerical properties'] = function(test) {
let fixture = List.compose({
remove: function() this._remove.apply(this, arguments),
}).apply(null, [1, 2, 3]);
fixture.remove(1);
test.assertEqual(fixture[fixture.length], undefined);
}
exports['test:add list item from Iterator'] = function(test) {
let array = [1, 2, 3, 4], sum = 0, added = false;
let fixture = List.compose({
add: function() this._add.apply(this, arguments),
}).apply(null, array);
for each (let item in fixture) {
sum += item;
if (!added) {
fixture.add(5);
added = true;
}
}
test.assertEqual(sum, 1 + 2 + 3 + 4);
};
exports['test:remove list item from Iterator'] = function(test) {
let array = [1, 2, 3, 4], sum = 0;
let fixture = List.compose({
remove: function() this._remove.apply(this, arguments),
}).apply(null, array);
for each (let item in fixture) {
sum += item;
fixture.remove(item);
}
test.assertEqual(sum, 1 + 2 + 3 + 4);
};
exports['test:clear list from Iterator'] = function(test) {
let array = [1, 2, 3, 4], sum = 0;
let fixture = List.compose({
clear: function() this._clear()
}).apply(null, array);
for each (let item in fixture) {
sum += item;
fixture.clear();
}
test.assertEqual(sum, 1 + 2 + 3 + 4);
};
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