editing-on-newline-should-not-crash.html

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This WPT test may be referenced by the following Test IDs:
- /editing/crashtests/editing-on-newline-should-not-crash.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html lang="en">

  <head>

    <meta charset="UTF-8" />

    <meta name="viewport" content="width=device-width, initial-scale=1.0" />

    <title>Pasting in selection with newline character should not crash</title>

    <style>

      #text {

        white-space: pre-line;

        border: 1px solid #ccc;

        padding: 10px;

        width: 300px;

        height: 100px;

        overflow: auto;

    </style>

  </head>

  <body>

    <div id="text" contenteditable="true">This is a sample text.<br>

    </div>

    <script>

      const div = document.getElementById("text");

      function setSelectionToCopy() {

        const range = document.createRange();

        const selection = window.getSelection();

        const textNode = div.firstChild;

        // Set the Selection on first word "This".

        range.setStart(textNode, 0);

        range.setEnd(textNode, 4);

        selection.removeAllRanges();

        selection.addRange(range);

      function setSelectionOnNewLine() {

        const range = document.createRange();

        const selection = window.getSelection();

        const textNode = div.lastChild;

        const newlineIndex = textNode.textContent.indexOf("\n");

        if (newlineIndex !== -1) {

          range.setStart(textNode, newlineIndex);

          range.setEnd(textNode, newlineIndex + 1);

          selection.removeAllRanges();

          selection.addRange(range);

      setSelectionToCopy();

      document.execCommand("copy");

      setSelectionOnNewLine();

      document.execCommand("paste");

    </script>

  </body>

</html>