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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.min"); |
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8 |
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9 suite.addBatch({ |
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10 "min": { |
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11 topic: function() { |
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12 return d3.min; |
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13 }, |
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14 "returns the least numeric value for numbers": function(min) { |
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15 assert.equal(min([1]), 1); |
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16 assert.equal(min([5, 1, 2, 3, 4]), 1); |
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17 assert.equal(min([20, 3]), 3); |
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18 assert.equal(min([3, 20]), 3); |
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19 }, |
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20 "returns the least lexicographic value for strings": function(min) { |
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21 assert.equal(min(["c", "a", "b"]), "a"); |
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22 assert.equal(min(["20", "3"]), "20"); |
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23 assert.equal(min(["3", "20"]), "20"); |
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24 }, |
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25 "ignores null, undefined and NaN": function(min) { |
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26 assert.equal(min([NaN, 1, 2, 3, 4, 5]), 1); |
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27 assert.equal(min([1, 2, 3, 4, 5, NaN]), 1); |
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28 assert.equal(min([10, null, 3, undefined, 5, NaN]), 3); |
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29 }, |
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30 "compares heterogenous types as numbers": function(min) { |
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31 assert.strictEqual(min([20, "3"]), "3"); |
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32 assert.strictEqual(min(["20", 3]), 3); |
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33 assert.strictEqual(min([3, "20"]), 3); |
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34 assert.strictEqual(min(["3", 20]), "3"); |
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35 }, |
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36 "returns undefined for empty array": function(min) { |
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37 assert.isUndefined(min([])); |
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38 assert.isUndefined(min([null])); |
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39 assert.isUndefined(min([undefined])); |
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40 assert.isUndefined(min([NaN])); |
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41 assert.isUndefined(min([NaN, NaN])); |
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42 }, |
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43 "applies the optional accessor function": function(min) { |
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44 assert.equal(d3.min([[1, 2, 3, 4, 5], [2, 4, 6, 8, 10]], function(d) { return d3.max(d); }), 5); |
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45 assert.equal(d3.min([1, 2, 3, 4, 5], function(d, i) { return i; }), 0); |
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46 } |
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47 } |
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48 }); |
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49 |
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50 suite.export(module); |