1 files changed, 109 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/forms/the-input-element/checkbox-click-events.html b/testing/web-platform/tests/html/semantics/forms/the-input-element/checkbox-click-events.html
new file mode 100644
index 0000000000..5051fdd4e6
--- /dev/null
+++ b/testing/web-platform/tests/html/semantics/forms/the-input-element/checkbox-click-events.html
@@ -0,0 +1,109 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>Checkbox click events</title>
+<link rel="author" title="jeffcarp" href="mailto:gcarpenterv@gmail.com">
+<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";
+
+  const values = [];
+
+  input.addEventListener("click", e => {
+    values.push(input.checked);
+    e.preventDefault();
+    values.push(input.checked);
+  });
+
+  input.click();
+
+  values.push(input.checked);
+  assert_array_equals(values, [true, true, false]);
+
+}, "clicking and preventDefaulting a checkbox causes the checkbox to be checked during the click handler but reverted");
+
+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);
+
+  input.click();
+
+  assert_true(input.checked);
+  assert_array_equals(events, ["click", "input", "change"]);
+
+}, "a checkbox input emits click, input, change events in order after synthetic click");
+
+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);
+
+  const event = new MouseEvent("click", { bubbles: true, cancelable: true });
+  input.dispatchEvent(event);
+
+  assert_true(input.checked);
+  assert_array_equals(events, ["click", "input", "change"]);
+
+}, "a checkbox input emits click, input, change events in order after dispatching click event");
+
+test(() => {
+  const input = document.createElement("input");
+  input.type = "checkbox";
+  document.body.appendChild(input);
+  const events = [];
+
+  input.addEventListener("change", () => {
+    events.push("change");
+  });
+  input.addEventListener("click", e => {
+    e.preventDefault();
+    events.push("click");
+  });
+  input.addEventListener("input", () => {
+    events.push("input");
+  });
+
+  assert_false(input.checked);
+
+  input.click();
+
+  assert_false(input.checked);
+  assert_array_equals(events, ["click"]);
+}, "checkbox input respects cancel behavior on synthetic clicks");
+</script>