53 строки
1.8 KiB
JavaScript
53 строки
1.8 KiB
JavaScript
require("../env");
|
|
|
|
var vows = require("vows"),
|
|
assert = require("assert");
|
|
|
|
var suite = vows.describe("d3.permute");
|
|
|
|
suite.addBatch({
|
|
"permute": {
|
|
topic: function() {
|
|
return d3.permute;
|
|
},
|
|
"permutes according to the specified index": function(permute) {
|
|
assert.deepEqual(permute([3, 4, 5], [2, 1, 0]), [5, 4, 3]);
|
|
assert.deepEqual(permute([3, 4, 5], [2, 0, 1]), [5, 3, 4]);
|
|
assert.deepEqual(permute([3, 4, 5], [0, 1, 2]), [3, 4, 5]);
|
|
},
|
|
"does not modify the input array": function(permute) {
|
|
var input = [3, 4, 5];
|
|
permute(input, [2, 1, 0]);
|
|
assert.deepEqual(input, [3, 4, 5]);
|
|
},
|
|
"can duplicate input values": function(permute) {
|
|
assert.deepEqual(permute([3, 4, 5], [0, 1, 0]), [3, 4, 3]);
|
|
assert.deepEqual(permute([3, 4, 5], [2, 2, 2]), [5, 5, 5]);
|
|
assert.deepEqual(permute([3, 4, 5], [0, 1, 1]), [3, 4, 4]);
|
|
},
|
|
"can return more elements": function(permute) {
|
|
assert.deepEqual(permute([3, 4, 5], [0, 0, 1, 2]), [3, 3, 4, 5]);
|
|
assert.deepEqual(permute([3, 4, 5], [0, 1, 1, 1]), [3, 4, 4, 4]);
|
|
},
|
|
"can return fewer elements": function(permute) {
|
|
assert.deepEqual(permute([3, 4, 5], [0]), [3]);
|
|
assert.deepEqual(permute([3, 4, 5], [1, 2]), [4, 5]);
|
|
assert.deepEqual(permute([3, 4, 5], []), []);
|
|
},
|
|
"can return undefined elements": function(permute) {
|
|
var v1 = permute([3, 4, 5], [10]);
|
|
assert.equal(v1.length, 1);
|
|
assert.isUndefined(v1[0]);
|
|
var v2 = permute([3, 4, 5], [-1]);
|
|
assert.equal(v2.length, 1);
|
|
assert.isUndefined(v2[0]);
|
|
var v3 = permute([3, 4, 5], [0, -1]);
|
|
assert.equal(v3.length, 2);
|
|
assert.equal(v3[0], 3);
|
|
assert.isUndefined(v3[1]);
|
|
}
|
|
}
|
|
});
|
|
|
|
suite.export(module);
|