Sha256: 549f3555ed7597476a8d4c9953015d8f69d37d9e5e73b9986112f79d4598880a
Contents?: true
Size: 1.44 KB
Versions: 25
Compression:
Stored size: 1.44 KB
Contents
require("../env");
require("../../d3");
var vows = require("vows"),
assert = require("assert");
var suite = vows.describe("d3.mean");
suite.addBatch({
"mean": {
topic: function() {
return d3.mean;
},
"returns the mean value for numbers": function(mean) {
assert.equal(mean([1]), 1);
assert.equal(mean([5, 1, 2, 3, 4]), 3);
assert.equal(mean([20, 3]), 11.5);
assert.equal(mean([3, 20]), 11.5);
},
"ignores null, undefined and NaN": function(mean) {
assert.equal(mean([NaN, 1, 2, 3, 4, 5]), 3);
assert.equal(mean([1, 2, 3, 4, 5, NaN]), 3);
assert.equal(mean([10, null, 3, undefined, 5, NaN]), 6);
},
"can handle large numbers without overflowing": function(mean) {
assert.equal(mean([Number.MAX_VALUE, Number.MAX_VALUE]), Number.MAX_VALUE);
assert.equal(mean([-Number.MAX_VALUE, -Number.MAX_VALUE]), -Number.MAX_VALUE);
},
"returns undefined for empty array": function(mean) {
assert.isUndefined(mean([]));
assert.isUndefined(mean([null]));
assert.isUndefined(mean([undefined]));
assert.isUndefined(mean([NaN]));
assert.isUndefined(mean([NaN, NaN]));
},
"applies the optional accessor function": function(mean) {
assert.equal(d3.mean([[1, 2, 3, 4, 5], [2, 4, 6, 8, 10]], function(d) { return d3.mean(d); }), 4.5);
assert.equal(d3.mean([1, 2, 3, 4, 5], function(d, i) { return i; }), 2);
}
}
});
suite.export(module);
Version data entries
25 entries across 25 versions & 1 rubygems