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https://github.com/servo/servo.git
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489 lines
14 KiB
HTML
489 lines
14 KiB
HTML
<!DOCTYPE html>
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<meta charset=utf-8>
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<title>Blob constructor</title>
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<link rel=help href="http://dev.w3.org/2006/webapi/FileAPI/#constructorBlob">
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<link rel=help href="https://heycam.github.io/webidl/#es-union">
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<link rel=help href="https://heycam.github.io/webidl/#es-dictionary">
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<link rel=help href="https://heycam.github.io/webidl/#es-sequence">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="../support/Blob.js"></script>
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<div id="log"></div>
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<script>
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test(function() {
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assert_true("Blob" in window, "window should have a Blob property.");
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assert_equals(Blob.length, 0, "Blob.length should be 0.");
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assert_true(Blob instanceof Function, "Blob should be a function.");
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}, "Blob interface object");
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// Step 1.
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test(function() {
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var blob = new Blob();
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assert_true(blob instanceof Blob);
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assert_equals(String(blob), '[object Blob]');
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assert_equals(blob.size, 0);
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assert_equals(blob.type, "");
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}, "no-argument Blob constructor");
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test(function() {
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assert_throws(new TypeError(), function() { var blob = Blob(); });
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}, "no-argument Blob constructor without 'new'");
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test(function() {
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var blob = new Blob;
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assert_true(blob instanceof Blob);
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assert_equals(blob.size, 0);
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assert_equals(blob.type, "");
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}, "no-argument Blob constructor without brackets");
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// blobParts argument (WebIDL).
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test(function() {
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var args = [
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null,
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undefined,
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true,
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false,
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0,
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1,
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1.5,
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"FAIL",
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new Date(),
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new RegExp(),
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{},
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{ 0: "FAIL", length: 1 },
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document.createElement("div"),
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window,
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];
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args.forEach(function(arg) {
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assert_throws(new TypeError(), function() {
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new Blob(arg);
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}, "Should throw for argument " + format_value(arg) + ".");
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});
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}, "Passing non-objects, Dates and RegExps for blobParts should throw a TypeError.");
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test_blob(function() {
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return new Blob({
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[Symbol.iterator]: Array.prototype[Symbol.iterator],
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});
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}, {
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expected: "",
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type: "",
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desc: "A plain object with @@iterator should be treated as a sequence for the blobParts argument."
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});
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test_blob(function() {
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return new Blob({
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[Symbol.iterator]: Array.prototype[Symbol.iterator],
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0: "PASS",
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length: 1
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});
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}, {
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expected: "PASS",
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type: "",
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desc: "A plain object with @@iterator and a length property should be treated as a sequence for the blobParts argument."
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});
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test_blob(function() {
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return new Blob(new String("xyz"));
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}, {
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expected: "xyz",
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type: "",
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desc: "A String object should be treated as a sequence for the blobParts argument."
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});
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test_blob(function() {
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return new Blob(new Uint8Array([1, 2, 3]));
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}, {
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expected: "123",
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type: "",
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desc: "A Uint8Array object should be treated as a sequence for the blobParts argument."
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});
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var test_error = {
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name: "test",
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message: "test error",
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};
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test(function() {
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var obj = {
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[Symbol.iterator]: Array.prototype[Symbol.iterator],
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get length() { throw test_error; }
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};
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assert_throws(test_error, function() {
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new Blob(obj);
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});
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}, "The length getter should be invoked and any exceptions should be propagated.");
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test(function() {
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var element = document.createElement("div");
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element.appendChild(document.createElement("div"));
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element.appendChild(document.createElement("p"));
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var list = element.children;
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Object.defineProperty(list, "length", {
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get: function() { throw test_error; }
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});
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assert_throws(test_error, function() {
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new Blob(list);
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});
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}, "A platform object that supports indexed properties should be treated as a sequence for the blobParts argument (overwritten 'length'.)");
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test(function() {
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assert_throws(test_error, function() {
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var obj = {
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[Symbol.iterator]: Array.prototype[Symbol.iterator],
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length: {
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valueOf: null,
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toString: function() { throw test_error; }
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}
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};
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new Blob(obj);
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});
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assert_throws(test_error, function() {
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var obj = {
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[Symbol.iterator]: Array.prototype[Symbol.iterator],
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length: { valueOf: function() { throw test_error; } }
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};
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new Blob(obj);
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});
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}, "ToUint32 should be applied to the length and any exceptions should be propagated.");
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test(function() {
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var received = [];
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var obj = {
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get [Symbol.iterator]() {
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received.push("Symbol.iterator");
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return Array.prototype[Symbol.iterator];
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},
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get length() {
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received.push("length getter");
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return {
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valueOf: function() {
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received.push("length valueOf");
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return 3;
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}
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};
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},
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get 0() {
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received.push("0 getter");
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return {
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toString: function() {
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received.push("0 toString");
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return "a";
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}
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};
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},
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get 1() {
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received.push("1 getter");
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throw test_error;
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},
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get 2() {
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received.push("2 getter");
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assert_unreached("Should not call the getter for 2 if the getter for 1 threw.");
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}
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};
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assert_throws(test_error, function() {
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new Blob(obj);
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});
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assert_array_equals(received, [
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"Symbol.iterator",
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"length getter",
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"length valueOf",
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"0 getter",
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"0 toString",
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"length getter",
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"length valueOf",
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"1 getter",
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]);
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}, "Getters and value conversions should happen in order until an exception is thrown.");
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// XXX should add tests edge cases of ToLength(length)
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test(function() {
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assert_throws(test_error, function() {
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new Blob([{ toString: function() { throw test_error; } }]);
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}, "Throwing toString");
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assert_throws(test_error, function() {
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new Blob([{ toString: undefined, valueOf: function() { throw test_error; } }]);
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}, "Throwing valueOf");
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assert_throws(test_error, function() {
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new Blob([{
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toString: function() { throw test_error; },
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valueOf: function() { assert_unreached("Should not call valueOf if toString is present."); }
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}]);
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}, "Throwing toString and valueOf");
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assert_throws(new TypeError(), function() {
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new Blob([{toString: null, valueOf: null}]);
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}, "Null toString and valueOf");
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}, "ToString should be called on elements of the blobParts array and any exceptions should be propagated.");
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test_blob(function() {
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var arr = [
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{ toString: function() { arr.pop(); return "PASS"; } },
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{ toString: function() { assert_unreached("Should have removed the second element of the array rather than called toString() on it."); } }
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];
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return new Blob(arr);
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}, {
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expected: "PASS",
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type: "",
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desc: "Changes to the blobParts array should be reflected in the returned Blob (pop)."
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});
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test_blob(function() {
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var arr = [
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{
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toString: function() {
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if (arr.length === 3) {
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return "A";
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}
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arr.unshift({
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toString: function() {
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assert_unreached("Should only access index 0 once.");
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}
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});
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return "P";
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}
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},
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{
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toString: function() {
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return "SS";
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}
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}
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];
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return new Blob(arr);
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}, {
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expected: "PASS",
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type: "",
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desc: "Changes to the blobParts array should be reflected in the returned Blob (unshift)."
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});
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test_blob(function() {
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// https://www.w3.org/Bugs/Public/show_bug.cgi?id=17652
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return new Blob([
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null,
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undefined,
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true,
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false,
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0,
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1,
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new String("stringobject"),
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[],
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['x', 'y'],
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{},
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{ 0: "FAIL", length: 1 },
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{ toString: function() { return "stringA"; } },
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{ toString: undefined, valueOf: function() { return "stringB"; } },
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{ valueOf: function() { assert_unreached("Should not call valueOf if toString is present on the prototype."); } }
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]);
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}, {
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expected: "nullundefinedtruefalse01stringobjectx,y[object Object][object Object]stringAstringB[object Object]",
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type: "",
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desc: "ToString should be called on elements of the blobParts array."
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});
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test_blob(function() {
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return new Blob([
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new ArrayBuffer(8)
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]);
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}, {
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expected: "\0\0\0\0\0\0\0\0",
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type: "",
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desc: "ArrayBuffer elements of the blobParts array should be supported."
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});
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test_blob(function() {
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return new Blob([
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new Uint8Array([0x50, 0x41, 0x53, 0x53]),
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new Int8Array([0x50, 0x41, 0x53, 0x53]),
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new Uint16Array([0x4150, 0x5353]),
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new Int16Array([0x4150, 0x5353]),
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new Uint32Array([0x53534150]),
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new Int32Array([0x53534150]),
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new Float32Array([0xD341500000])
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]);
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}, {
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expected: "PASSPASSPASSPASSPASSPASSPASS",
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type: "",
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desc: "Passing typed arrays as elements of the blobParts array should work."
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});
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test_blob(function() {
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return new Blob([
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// 0x535 3415053534150
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// 0x535 = 0b010100110101 -> Sign = +, Exponent = 1333 - 1023 = 310
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// 0x13415053534150 * 2**(-52)
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// ==> 0x13415053534150 * 2**258 = 2510297372767036725005267563121821874921913208671273727396467555337665343087229079989707079680
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new Float64Array([2510297372767036725005267563121821874921913208671273727396467555337665343087229079989707079680])
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]);
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}, {
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expected: "PASSPASS",
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type: "",
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desc: "Passing a Float64Array as element of the blobParts array should work."
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});
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test_blob(function() {
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var select = document.createElement("select");
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select.appendChild(document.createElement("option"));
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return new Blob(select);
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}, {
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expected: "[object HTMLOptionElement]",
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type: "",
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desc: "Passing an platform object that supports indexed properties as the blobParts array should work (select)."
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});
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var t_ports = async_test("Passing a platform array object as the blobParts array should work (MessagePort[]).");
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t_ports.step(function() {
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var channel = new MessageChannel();
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channel.port2.onmessage = this.step_func(function(e) {
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var b_ports = new Blob(e.ports);
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assert_equals(b_ports.size, "[object MessagePort]".length);
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this.done();
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});
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var channel2 = new MessageChannel();
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channel.port1.postMessage('', [channel2.port1]);
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});
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test_blob(function() {
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var elm = document.createElement("div");
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elm.setAttribute("foo", "bar");
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return new Blob(elm.attributes);
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}, {
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expected: "[object Attr]",
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type: "",
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desc: "Passing a platform array object as the blobParts array should work (Attr[])."
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});
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test_blob(function() {
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var blob = new Blob(['foo']);
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return new Blob([blob, blob]);
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}, {
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expected: "foofoo",
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type: "",
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desc: "Array with two blobs"
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});
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test_blob_binary(function() {
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var view = new Uint8Array([0, 255, 0]);
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return new Blob([view.buffer, view.buffer]);
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}, {
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expected: [0, 255, 0, 0, 255, 0],
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type: "",
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desc: "Array with two buffers"
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});
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test_blob_binary(function() {
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var view = new Uint8Array([0, 255, 0, 4]);
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var blob = new Blob([view, view]);
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assert_equals(blob.size, 8);
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var view1 = new Uint16Array(view.buffer, 2);
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return new Blob([view1, view.buffer, view1]);
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}, {
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expected: [0, 4, 0, 255, 0, 4, 0, 4],
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type: "",
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desc: "Array with two bufferviews"
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});
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test_blob(function() {
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var view = new Uint8Array([0]);
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var blob = new Blob(["fo"]);
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return new Blob([view.buffer, blob, "foo"]);
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}, {
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expected: "\0fofoo",
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type: "",
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desc: "Array with mixed types"
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});
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// options argument
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test(function() {
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new Blob([], { endings: "invalidEnumValue" });
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new Blob([], { endings: null });
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new Blob([], { endings: undefined });
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new Blob([], { endings: 0 });
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new Blob([], { get endings() { assert_unreached("Should not call getter"); } });
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}, "The 'endings' property should be ignored.");
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test(function() {
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assert_throws(test_error, function() {
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new Blob([], {
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get type() { throw test_error; }
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});
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});
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assert_throws(test_error, function() {
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new Blob([], {
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type: { toString: function() { throw test_error; } }
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});
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});
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}, "options properties should be accessed in lexicographic order.");
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test(function() {
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assert_throws(test_error, function() {
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new Blob(
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[{ toString: function() { throw test_error } }],
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{
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get type() { assert_unreached("type getter should not be called."); }
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}
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);
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});
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}, "Arguments should be evaluated from left to right.");
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[
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null,
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undefined,
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{},
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{ unrecognized: true },
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/regex/,
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function() {}
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].forEach(function(arg, idx) {
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test_blob(function() {
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return new Blob([], arg);
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}, {
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expected: "",
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type: "",
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desc: "Passing " + format_value(arg) + " (index " + idx + ") for options should use the defaults."
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});
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test_blob(function() {
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return new Blob(["\na\r\nb\n\rc\r"], arg);
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}, {
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expected: "\na\r\nb\n\rc\r",
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type: "",
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desc: "Passing " + format_value(arg) + " (index " + idx + ") for options should use the defaults (with newlines)."
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});
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});
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test_blob(function() {
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return new Blob(["\na\r\nb\n\rc\r"], { endings: "transparent" });
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}, {
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expected: "\na\r\nb\n\rc\r",
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type: "",
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desc: "Newlines should not change when endings is 'transparent'."
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});
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test_blob(function() {
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return new Blob(["\na\r\nb\n\rc\r"], { endings: "native" });
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}, {
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expected: "\na\r\nb\n\rc\r",
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type: "",
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desc: "Newlines should not change when endings is 'native'."
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});
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var type_tests = [
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// blobParts, type, expected type
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[[], '', ''],
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[[], 'a', 'a'],
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[[], 'A', 'a'],
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[[], 'text/html', 'text/html'],
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[[], 'TEXT/HTML', 'text/html'],
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[[], '\u00E5', ''],
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[[], '\uD801\uDC7E', ''], // U+1047E
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[[], ' image/gif ', ' image/gif '],
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[[], '\timage/gif\t', ''],
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[[], 'image/gif;\u007f', ''],
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[[], '\u0130mage/gif', ''], // uppercase i with dot
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[[], '\u0131mage/gif', ''], // lowercase dotless i
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[[], 'image/gif\u0000', ''],
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// check that type isn't changed based on sniffing
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[[0x3C, 0x48, 0x54, 0x4D, 0x4C, 0x3E], 'unknown/unknown', 'unknown/unknown'], // "<HTML>"
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[[0x00, 0xFF], 'text/plain', 'text/plain'],
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[[0x47, 0x49, 0x46, 0x38, 0x39, 0x61], 'image/png', 'image/png'], // "GIF89a"
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];
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type_tests.forEach(function(t) {
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test(function() {
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var arr = new Uint8Array([t[0]]).buffer;
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var b = new Blob([arr], {type:t[1]});
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assert_equals(b.type, t[2]);
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}, "Blob with type " + format_value(t[1]));
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});
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</script>
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