42 строки
1.5 KiB
JavaScript
42 строки
1.5 KiB
JavaScript
require("../env");
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require("../../d3");
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var assert = require("assert");
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module.exports = {
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topic: function() {
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return d3.select("body").html("").selectAll()
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.data(["foo", "bar"])
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.enter().append("div")
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.attr("class", String);
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},
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"defaults to 250 milliseconds": function(selection) {
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var t = selection.transition();
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assert.strictEqual(t[0][0].duration, 250);
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assert.strictEqual(t[0][1].duration, 250);
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},
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"can specify duration as a number": function(selection) {
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var t = selection.transition().duration(150);
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assert.strictEqual(t[0][0].duration, 150);
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assert.strictEqual(t[0][1].duration, 150);
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t.duration(50);
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assert.strictEqual(t[0][0].duration, 50);
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assert.strictEqual(t[0][1].duration, 50);
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},
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"can specify duration as a function": function(selection) {
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var dd = [], ii = [], tt = [], t = selection.transition().duration(f);
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function f(d, i) { dd.push(d); ii.push(i); tt.push(this); return i * 20; }
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assert.strictEqual(t[0][0].duration, 0);
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assert.strictEqual(t[0][1].duration, 20);
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assert.deepEqual(dd, ["foo", "bar"], "expected data, got {actual}");
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assert.deepEqual(ii, [0, 1], "expected index, got {actual}");
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assert.domEqual(tt[0], t[0][0].node, "expected this, got {actual}");
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assert.domEqual(tt[1], t[0][1].node, "expected this, got {actual}");
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},
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"coerces duration to a number": function(selection) {
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var t = selection.transition().duration("150");
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assert.strictEqual(t[0][0].duration, 150);
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assert.strictEqual(t[0][1].duration, 150);
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}
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};
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