3
var vows = require("vows"),
4
assert = require("assert");
6
var suite = vows.describe("d3.min");
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"returns the least numeric value for numbers": function(min) {
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assert.equal(min([1]), 1);
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assert.equal(min([5, 1, 2, 3, 4]), 1);
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assert.equal(min([20, 3]), 3);
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assert.equal(min([3, 20]), 3);
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"returns the least lexicographic value for strings": function(min) {
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assert.equal(min(["c", "a", "b"]), "a");
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assert.equal(min(["20", "3"]), "20");
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assert.equal(min(["3", "20"]), "20");
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"ignores null, undefined and NaN": function(min) {
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assert.equal(min([NaN, 1, 2, 3, 4, 5]), 1);
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assert.equal(min([1, 2, 3, 4, 5, NaN]), 1);
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assert.equal(min([10, null, 3, undefined, 5, NaN]), 3);
29
"compares heterogenous types as numbers": function(min) {
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assert.strictEqual(min([20, "3"]), "3");
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assert.strictEqual(min(["20", 3]), 3);
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assert.strictEqual(min([3, "20"]), 3);
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assert.strictEqual(min(["3", 20]), "3");
35
"returns undefined for empty array": function(min) {
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assert.isUndefined(min([]));
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assert.isUndefined(min([null]));
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assert.isUndefined(min([undefined]));
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assert.isUndefined(min([NaN]));
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assert.isUndefined(min([NaN, NaN]));
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"applies the optional accessor function": function(min) {
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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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assert.equal(d3.min([1, 2, 3, 4, 5], function(d, i) { return i; }), 0);