59 строки
2.6 KiB
JavaScript
59 строки
2.6 KiB
JavaScript
require("../env");
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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 zero": function(selection) {
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var t = selection.transition();
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assert.strictEqual(t[0][0].__transition__[t.id].delay, 0);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 0);
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},
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"can specify delay as a number": function(selection) {
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var t = selection.transition().delay(150);
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assert.strictEqual(t[0][0].__transition__[t.id].delay, 150);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 150);
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t.delay(250);
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assert.strictEqual(t[0][0].__transition__[t.id].delay, 250);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 250);
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},
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"can specify delay as a negative number": function(selection) {
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var t = selection.transition().delay(-250);
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assert.strictEqual(t[0][0].__transition__[t.id].delay, -250);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, -250);
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},
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"NaN delays are treated as 0ms": function(selection) {
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var t = selection.transition().delay(NaN);
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assert.strictEqual(t[0][0].__transition__[t.id].delay, 0);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 0);
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},
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"floating-point durations are floored to integers": function(selection) {
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var t = selection.transition().delay(14.6);
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assert.strictEqual(t[0][0].__transition__[t.id].delay, 14);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 14);
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var t = selection.transition().delay("16.99");
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assert.strictEqual(t[0][0].__transition__[t.id].delay, 16);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 16);
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},
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"can specify delay as a function": function(selection) {
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var dd = [], ii = [], tt = [], t = selection.transition().delay(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].__transition__[t.id].delay, 0);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 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], "expected this, got {actual}");
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assert.domEqual(tt[1], t[0][1], "expected this, got {actual}");
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},
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"coerces delay to a number": function(selection) {
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var t = selection.transition().delay("150");
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assert.strictEqual(t[0][0].__transition__[t.id].delay, 150);
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assert.strictEqual(t[0][1].__transition__[t.id].delay, 150);
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}
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};
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