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Test transition.size.
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mbostock committed Jul 30, 2020
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var tape = require("tape"),
jsdom = require("../jsdom"),
d3_selection = require("d3-selection"),
d3_transition = require("../../");

tape("transition.size is the same as selection.size", function(test) {
test.equal(d3_transition.transition.prototype.size, d3_selection.selection.prototype.size);
test.end();
});

tape("transition.size() returns the expected value", function(test) {
var root = jsdom().documentElement;
test.equal(d3_selection.select(root).transition().size(), 1);
test.equal(d3_selection.selectAll([null, root]).transition().size(), 1);
test.end();
});

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