Overleaf/services/web/public/js/ace/virtual_renderer_test.js

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if (typeof process !== "undefined") {
    require("amd-loader");
    require("./test/mockdom");
}

define(function(require, exports, module) {
"use strict";

var EditSession = require("./edit_session").EditSession;
var VirtualRenderer = require("./virtual_renderer").VirtualRenderer;
var assert = require("./test/assertions");

module.exports = {
    "test: screen2text the column should be rounded to the next character edge" : function() {
        var el = document.createElement("div");

        if (!el.getBoundingClientRect) {
            console.log("Skipping test: This test only runs in the browser");
            return;
        }

        el.style.left = "20px";
        el.style.top = "30px";
        el.style.width = "300px";
        el.style.height = "100px";
        document.body.appendChild(el);

        var renderer = new VirtualRenderer(el);
        renderer.setPadding(0);
        renderer.setSession(new EditSession("1234"));

        var r = renderer.scroller.getBoundingClientRect();
        function testPixelToText(x, y, row, column) {
            assert.position(renderer.screenToTextCoordinates(x+r.left, y+r.top), row, column);
        }

        renderer.characterWidth = 10;
        renderer.lineHeight = 15;

        testPixelToText(4, 0, 0, 0);
        testPixelToText(5, 0, 0, 1);
        testPixelToText(9, 0, 0, 1);
        testPixelToText(10, 0, 0, 1);
        testPixelToText(14, 0, 0, 1);
        testPixelToText(15, 0, 0, 2);
        document.body.removeChild(el);
    }

    // change tab size after setDocument (for text layer)
};

});

if (typeof module !== "undefined" && module === require.main) {
    require("asyncjs").test.testcase(module.exports).exec()
}