@blueprintjs/core/src/components/popover/popperUtils.test.ts

Core styles & components

/**
 * Copyright 2021 Palantir Technologies, Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import type { BasePlacement } from "@popperjs/core";

import { describe, expect, it } from "@blueprintjs/test-commons/vitest";

import { getAlignment, getOppositePlacement } from "./popperUtils";

describe("Popper utils", () => {
    it("getOppositePlacement returns opposite", () => {
        [
            ["top", "bottom"],
            ["left", "right"],
        ].map(([a, b]) => {
            expect(getOppositePlacement(a as BasePlacement)).to.equal(b);
            expect(getOppositePlacement(b as BasePlacement)).to.equal(a);
        });
    });

    it("getAlignment returns alignment", () => {
        expect(getAlignment("bottom-start")).to.equal("left");
        expect(getAlignment("top-end")).to.equal("right");
        expect(getAlignment("left")).to.equal("center");
    });
});