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diff --git a/testing/web-platform/tests/FileAPI/reading-data-section/Determining-Encoding.html b/testing/web-platform/tests/FileAPI/reading-data-section/Determining-Encoding.html
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+++ b/testing/web-platform/tests/FileAPI/reading-data-section/Determining-Encoding.html
@@ -0,0 +1,91 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>FileAPI Test: Blob Determining Encoding</title>
+<link ref="author" title="march1993" href="mailto:march511@gmail.com">
+<link rel=help href="http://dev.w3.org/2006/webapi/FileAPI/#enctype">
+<link rel=help href="http://encoding.spec.whatwg.org/#decode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+var t = async_test("Blob Determing Encoding with encoding argument");
+t.step(function() {
+    // string 'hello'
+    var data = [0xFE,0xFF,0x00,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F];
+    var blob = new Blob([new Uint8Array(data)]);
+    var reader = new FileReader();
+
+    reader.onloadend = t.step_func_done (function(event) {
+        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16BE.")
+    }, reader);
+
+    reader.readAsText(blob, "UTF-16BE");
+});
+
+var t = async_test("Blob Determing Encoding with type attribute");
+t.step(function() {
+    var data = [0xFE,0xFF,0x00,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F];
+    var blob = new Blob([new Uint8Array(data)], {type:"text/plain;charset=UTF-16BE"});
+    var reader = new FileReader();
+
+    reader.onloadend = t.step_func_done (function(event) {
+        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16BE.")
+    }, reader);
+
+    reader.readAsText(blob);
+});
+
+
+var t = async_test("Blob Determing Encoding with UTF-8 BOM");
+t.step(function() {
+    var data = [0xEF,0xBB,0xBF,0x68,0x65,0x6C,0x6C,0xC3,0xB6];
+    var blob = new Blob([new Uint8Array(data)]);
+    var reader = new FileReader();
+
+    reader.onloadend = t.step_func_done (function(event) {
+        assert_equals(this.result, "hellö", "The FileReader should read the blob with UTF-8.");
+    }, reader);
+
+    reader.readAsText(blob);
+});
+
+var t = async_test("Blob Determing Encoding without anything implying charset.");
+t.step(function() {
+    var data = [0x68,0x65,0x6C,0x6C,0xC3,0xB6];
+    var blob = new Blob([new Uint8Array(data)]);
+    var reader = new FileReader();
+
+    reader.onloadend = t.step_func_done (function(event) {
+        assert_equals(this.result, "hellö", "The FileReader should read the blob by default with UTF-8.");
+    }, reader);
+
+    reader.readAsText(blob);
+});
+
+var t = async_test("Blob Determing Encoding with UTF-16BE BOM");
+t.step(function() {
+    var data = [0xFE,0xFF,0x00,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F];
+    var blob = new Blob([new Uint8Array(data)]);
+    var reader = new FileReader();
+
+    reader.onloadend = t.step_func_done (function(event) {
+        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16BE.");
+    }, reader);
+
+    reader.readAsText(blob);
+});
+
+var t = async_test("Blob Determing Encoding with UTF-16LE BOM");
+t.step(function() {
+    var data = [0xFF,0xFE,0x68,0x00,0x65,0x00,0x6C,0x00,0x6C,0x00,0x6F,0x00];
+    var blob = new Blob([new Uint8Array(data)]);
+    var reader = new FileReader();
+
+    reader.onloadend = t.step_func_done (function(event) {
+        assert_equals(this.result, "hello", "The FileReader should read the ArrayBuffer through UTF-16LE.");
+    }, reader);
+
+    reader.readAsText(blob);
+});
+
+</script>