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chromium/third_party/blink/web_tests/fast/forms/checkbox/checkbox-keyboard-event.html 

<!DOCTYPE html>
<meta charset="utf-8">
<title>Checkbox keyboard event</title>
<link rel=help href="https://html.spec.whatwg.org/#checkbox-state-(type=checkbox)">
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>

<body>
<script>
"use strict";

test(() => {
  const input = document.createElement("input");
  input.type = "checkbox";
  document.body.appendChild(input);
  const events = [];

  input.addEventListener("change", () => {
    events.push("change");
  });
  input.addEventListener("click", () => {
    events.push("click");
  });
  input.addEventListener("input", () => {
    events.push("input");
  });

  assert_false(input.checked);

  if (window.eventSender) {
    input.focus();
    eventSender.keyDown(" ");

    assert_true(input.checked);
    assert_array_equals(events, ["click", "input", "change"]);
  }

}, "a checkbox input emits click, input, change events in order after keyboard event");
</script>