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<!doctype html>
<meta charset=utf-8>
<title>HTMLInputElement#files</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<script>
var types = [
"hidden",
"text",
"search",
"tel",
"url",
"email",
"password",
"date",
"month",
"week",
"time",
"datetime-local",
"number",
"range",
"color",
"checkbox",
"radio",
"submit",
"image",
"reset",
"button",
];
types.forEach(function(type) {
test(function() {
const input = document.createElement("input"),
input2 = document.createElement("input");
input.type = type;
input2.type = "file";
assert_equals(input.files, null, "files should be null");
input.files = input2.files;
assert_equals(input.files, null, "files should remain null as it cannot be set when it does not apply");
}, "files for input type=" + type);
});
test(function() {
var input = document.createElement("input");
input.type = "file";
assert_not_equals(input.files, null);
assert_true(input.files instanceof FileList, "files should be a FileList");
var files = input.files;
assert_equals(input.files, files, "files should return the same object");
}, "files for input type=file");
test(() => {
const i1 = document.createElement("input"),
i2 = document.createElement("input");
i1.type = "file";
i2.type = "file";
const files = i2.files;
i1.files = i2.files;
assert_equals(i1.files, files, "FileList should not be copied");
assert_equals(i2.files, files, "FileList can be shared across input elements");
i1.files = null;
assert_equals(i1.files, files, "files cannot be set to null");
assert_throws(new TypeError(), () => i1.files = [], "files cannot be set to an array");
assert_throws(new TypeError(), () => i1.files = [new File([], "x")], "files cannot be set to an array (even when it contains File objects)");
}, "setting <input type=file>.files");
</script>
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