48 строки
1.2 KiB
JavaScript
48 строки
1.2 KiB
JavaScript
require("../env");
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require("../../d3");
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var vows = require("vows"),
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assert = require("assert");
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var suite = vows.describe("d3.ascending");
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suite.addBatch({
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"numbers": {
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"returns a negative number if a < b": function() {
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assert.isTrue(d3.ascending(0, 1) < 0);
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},
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"returns a positive number if a > b": function() {
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assert.isTrue(d3.ascending(1, 0) > 0);
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},
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"returns zero if a == b": function() {
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assert.equal(d3.ascending(0, 0), 0);
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},
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"returns NaN if a or b is undefined": function() {
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assert.isNaN(d3.ascending(0, undefined));
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assert.isNaN(d3.ascending(undefined, 0));
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assert.isNaN(d3.ascending(undefined, undefined));
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},
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"returns NaN if a or b is NaN": function() {
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assert.isNaN(d3.ascending(0, NaN));
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assert.isNaN(d3.ascending(NaN, 0));
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assert.isNaN(d3.ascending(NaN, NaN));
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}
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}
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});
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suite.addBatch({
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"strings": {
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"returns a negative number if a < b": function() {
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assert.isTrue(d3.ascending("a", "b") < 0);
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},
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"returns a positive number if a > b": function() {
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assert.isTrue(d3.ascending("b", "a") > 0);
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},
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"returns zero if a == b": function() {
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assert.equal(d3.ascending("a", "a"), 0);
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}
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}
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});
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suite.export(module);
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