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<!DOCTYPE HTML>
<html>
<head>
<title>format_value utility function</title>
<meta charset="utf-8">
</head>
<body>
<div id="log"></div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
"use strict";
test(function() {
assert_equals(format_value(null), "null");
}, "null");
test(function() {
assert_equals(format_value(undefined), "undefined");
}, "undefined");
test(function() {
assert_equals(format_value(true), "true");
assert_equals(format_value(false), "false");
}, "boolean values");
test(function() {
assert_equals(format_value(0.4), "0.4");
assert_equals(format_value(0), "0");
assert_equals(format_value(-0), "-0");
}, "number values");
test(function() {
assert_equals(format_value("a string"), "\"a string\"");
assert_equals(format_value("new\nline"), "\"new\\nline\"");
}, "string values");
test(function() {
var node = document.createElement("span");
node.setAttribute("data-foo", "bar");
assert_true(
/<span\b/i.test(format_value(node)), "element includes tag name"
);
assert_true(
/data-foo=["']?bar["']?/i.test(format_value(node)),
"element includes attributes"
);
}, "node value: element node");
test(function() {
var text = document.createTextNode("wpt");
assert_equals(format_value(text), "Text node \"wpt\"");
}, "node value: text node");
test(function() {
var node = document.createProcessingInstruction("wpt1", "wpt2");
assert_equals(
format_value(node),
"ProcessingInstruction node with target \"wpt1\" and data \"wpt2\""
);
}, "node value: ProcessingInstruction node");
test(function() {
var node = document.createComment("wpt");
assert_equals(format_value(node), "Comment node <!--wpt-->");
}, "node value: comment node");
test(function() {
var node = document.implementation.createDocument(
"application/xhtml+xml", "", null
);
assert_equals(format_value(node), "Document node with 0 children");
node.appendChild(document.createElement('html'));
assert_equals(format_value(node), "Document node with 1 child");
}, "node value: document node");
test(function() {
var node = document.implementation.createDocumentType("foo", "baz", "baz");
assert_equals(format_value(node), "DocumentType node");
}, "node value: DocumentType node");
test(function() {
var node = document.createDocumentFragment();
assert_equals(format_value(node), "DocumentFragment node with 0 children");
node.appendChild(document.createElement("span"));
assert_equals(format_value(node), "DocumentFragment node with 1 child");
node.appendChild(document.createElement("span"));
assert_equals(format_value(node), "DocumentFragment node with 2 children");
}, "node value: DocumentFragment node");
test(function() {
assert_equals(format_value(Symbol("wpt")), "symbol \"Symbol(wpt)\"");
}, "symbol value");
test(function() {
assert_equals(format_value([]), "[]");
assert_equals(format_value(["one"]), "[\"one\"]");
assert_equals(format_value(["one", "two"]), "[\"one\", \"two\"]");
}, "array values");
test(function() {
var obj = {
toString: function() {
throw "wpt";
}
};
assert_equals(
format_value(obj), "[stringifying object threw wpt with type string]"
);
}, "object value with faulty `toString`");
</script>
</body>
</html>