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1 require("../env"); |
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2 require("../../d3"); |
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3 |
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4 var vows = require("vows"), |
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5 assert = require("assert"); |
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6 |
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7 var suite = vows.describe("d3.max"); |
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8 |
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9 suite.addBatch({ |
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10 "max": { |
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11 topic: function() { |
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12 return d3.max; |
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13 }, |
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14 "returns the greatest numeric value for numbers": function(max) { |
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15 assert.equal(max([1]), 1); |
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16 assert.equal(max([5, 1, 2, 3, 4]), 5); |
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17 assert.equal(max([20, 3]), 20); |
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18 assert.equal(max([3, 20]), 20); |
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19 }, |
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20 "returns the greatest lexicographic value for strings": function(max) { |
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21 assert.equal(max(["c", "a", "b"]), "c"); |
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22 assert.equal(max(["20", "3"]), "3"); |
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23 assert.equal(max(["3", "20"]), "3"); |
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24 }, |
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25 "ignores null, undefined and NaN": function(max) { |
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26 assert.equal(max([NaN, 1, 2, 3, 4, 5]), 5); |
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27 assert.equal(max([1, 2, 3, 4, 5, NaN]), 5); |
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28 assert.equal(max([10, null, 3, undefined, 5, NaN]), 10); |
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29 assert.equal(max([-1, null, -3, undefined, -5, NaN]), -1); |
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30 }, |
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31 "compares heterogenous types as numbers": function(max) { |
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32 assert.strictEqual(max([20, "3"]), 20); |
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33 assert.strictEqual(max(["20", 3]), "20"); |
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34 assert.strictEqual(max([3, "20"]), "20"); |
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35 assert.strictEqual(max(["3", 20]), 20); |
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36 }, |
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37 "returns undefined for empty array": function(max) { |
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38 assert.isUndefined(max([])); |
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39 assert.isUndefined(max([null])); |
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40 assert.isUndefined(max([undefined])); |
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41 assert.isUndefined(max([NaN])); |
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42 assert.isUndefined(max([NaN, NaN])); |
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43 }, |
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44 "applies the optional accessor function": function(max) { |
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45 assert.equal(d3.max([[1, 2, 3, 4, 5], [2, 4, 6, 8, 10]], function(d) { return d3.min(d); }), 2); |
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46 assert.equal(d3.max([1, 2, 3, 4, 5], function(d, i) { return i; }), 4); |
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47 } |
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48 } |
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49 }); |
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50 |
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51 suite.export(module); |