discourse/test/javascripts/components/text-overflow-test.js

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import componentTest from "helpers/component-test";
moduleForComponent("text-overflow", { integration: true });
componentTest("default", {
template: `
<style>
.overflow {
max-height: 40px;
overflow: hidden;
width: 500px;
}
</style>
<div>{{text-overflow class='overflow' text=text}}</div>`,
beforeEach() {
this.set(
"text",
"Lorem ipsum dolor sit amet, consectetur adipiscing elit.\nFusce convallis faucibus tortor quis vestibulum.<br>\nPhasellus pharetra dolor eget imperdiet tempor.<br>\nQuisque hendrerit magna id consectetur rutrum.<br>\nNulla vel tortor leo.<br>\nFusce ullamcorper lacus quis sodales ornare.<br>"
);
},
test(assert) {
const text = find(".overflow")
.text()
.trim();
assert.ok(text.startsWith("Lorem ipsum dolor sit amet"));
assert.ok(text.endsWith("..."));
}
});