mozilla-central/devtools/client/shared/test/xpcshell/test_classnames.js (file symbol)

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Test Info: Warnings

/* Any copyright is dedicated to the Public Domain.
"use strict";
/**
* Tests utility function in `classnames.js`
*/
const classnames = require("resource://devtools/client/shared/classnames.js");
add_task(async function () {
Assert.equal(
classnames(),
"",
"Returns an empty string when called with no params"
);
Assert.equal(
classnames(null, undefined, false),
"",
"Returns an empty string when called with only falsy params"
);
Assert.equal(
classnames("hello"),
"hello",
"Returns expected result when string is passed"
);
Assert.equal(
classnames("hello", "", "world"),
"hello world",
"Doesn't add extra spaces for empty strings"
);
Assert.equal(
classnames("hello", null, undefined, false, "world"),
"hello world",
"Doesn't add extra spaces for falsy values"
);
Assert.equal(
classnames("hello", { nice: true, blue: 42, world: {} }),
"hello nice blue world",
"Add property key when property value is truthy"
);
Assert.equal(
classnames("hello", { nice: false, blue: null, world: false }),
"hello",
"Does not add property key when property value is falsy"
);
Assert.equal(
classnames("hello", { nice: true }, { blue: true }, "world"),
"hello nice blue world",
"Handles multiple objects"
);
});