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Versions: 25
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Stored size: 1.95 KB
Contents
require("../env");
require("../../d3");
var vows = require("vows"),
assert = require("assert");
var suite = vows.describe("d3.extent");
suite.addBatch({
"extent": {
topic: function() {
return d3.extent;
},
"returns the numeric extent for numbers": function(extent) {
assert.deepEqual(extent([1]), [1, 1]);
assert.deepEqual(extent([5, 1, 2, 3, 4]), [1, 5]);
assert.deepEqual(extent([20, 3]), [3, 20]);
assert.deepEqual(extent([3, 20]), [3, 20]);
},
"returns the lexicographic extent for strings": function(extent) {
assert.deepEqual(extent(["c", "a", "b"]), ["a", "c"]);
assert.deepEqual(extent(["20", "3"]), ["20", "3"]);
assert.deepEqual(extent(["3", "20"]), ["20", "3"]);
},
"ignores null, undefined and NaN": function(extent) {
assert.deepEqual(extent([NaN, 1, 2, 3, 4, 5]), [1, 5]);
assert.deepEqual(extent([1, 2, 3, 4, 5, NaN]), [1, 5]);
assert.deepEqual(extent([10, null, 3, undefined, 5, NaN]), [3, 10]);
assert.deepEqual(extent([-1, null, -3, undefined, -5, NaN]), [-5, -1]);
},
"compares heterogenous types as numbers": function(extent) {
assert.deepEqual(extent([20, "3"]), ["3", 20]);
assert.deepEqual(extent(["20", 3]), [3, "20"]);
assert.deepEqual(extent([3, "20"]), [3, "20"]);
assert.deepEqual(extent(["3", 20]), ["3", 20]);
},
"returns undefined for empty array": function(extent) {
assert.deepEqual(extent([]), [undefined, undefined]);
assert.deepEqual(extent([null]), [undefined, undefined]);
assert.deepEqual(extent([undefined]), [undefined, undefined]);
assert.deepEqual(extent([NaN]), [undefined, undefined]);
assert.deepEqual(extent([NaN, NaN]), [undefined, undefined]);
},
"applies the optional accessor function exactly once": function(extent) {
var i = 10;
assert.deepEqual(d3.extent([0,1,2,3], function() { return ++i; }), [11, 14]);
}
}
});
suite.export(module);
Version data entries
25 entries across 25 versions & 1 rubygems