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+++ b/testing/web-platform/tests/performance-timeline/case-sensitivity.html
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+<!DOCTYPE HTML>
+<meta charset=utf-8>
+<title>PerformanceTimeline: case sensitivity</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<h1>PerformanceTimeline: case sensitivity</h1>
+<div id="log"></div>
+<script>
+  test(function () {
+    assert_equals(typeof window.performance, "object");
+    assert_equals(typeof window.performance.getEntriesByType, "function");
+    var lowerList = window.performance.getEntriesByType("resource");
+    var upperList = window.performance.getEntriesByType("RESOURCE");
+    var mixedList = window.performance.getEntriesByType("ReSoUrCe");
+
+    assert_not_equals(lowerList.length, 0, "Resource entries exist");
+    assert_equals(upperList.length, 0, "getEntriesByType('RESOURCE').length");
+    assert_equals(mixedList.length, 0, "getEntriesByType('ReSoUrCe').length");
+
+  }, "getEntriesByType values are case sensitive");
+
+  test(function () {
+    assert_equals(typeof window.performance, "object");
+    assert_equals(typeof window.performance.getEntriesByName, "function");
+    var origin = window.location.protocol + "//" + window.location.host;
+    var location1 = origin.toUpperCase() + "/resources/testharness.js";
+    var location2 = window.location.protocol + "//"
+     + window.location.host.toUpperCase() + "/resources/testharness.js";
+    var lowerList = window.performance.getEntriesByName(origin + "/resources/testharness.js");
+    var upperList = window.performance.getEntriesByName(location1);
+    var mixedList = window.performance.getEntriesByName(location2);
+
+    assert_equals(lowerList.length, 1, "Resource entry exist");
+    assert_equals(upperList.length, 0, "getEntriesByName('" + location1 + "').length");
+    assert_equals(mixedList.length, 0, "getEntriesByName('" + location2 + "').length");
+
+  }, "getEntriesByName values are case sensitive");
+
+</script>