response-clone.any.js (6491B)
1 // META: global=window,worker 2 // META: title=Response clone 3 // META: script=../resources/utils.js 4 5 var defaultValues = { "type" : "default", 6 "url" : "", 7 "ok" : true, 8 "status" : 200, 9 "statusText" : "" 10 }; 11 12 var response = new Response(); 13 var clonedResponse = response.clone(); 14 test(function() { 15 for (var attributeName in defaultValues) { 16 var expectedValue = defaultValues[attributeName]; 17 assert_equals(clonedResponse[attributeName], expectedValue, 18 "Expect default response." + attributeName + " is " + expectedValue); 19 } 20 }, "Check Response's clone with default values, without body"); 21 22 var body = "This is response body"; 23 var headersInit = { "name" : "value" }; 24 var responseInit = { "status" : 200, 25 "statusText" : "GOOD", 26 "headers" : headersInit 27 }; 28 var response = new Response(body, responseInit); 29 var clonedResponse = response.clone(); 30 test(function() { 31 assert_equals(clonedResponse.status, responseInit["status"], 32 "Expect response.status is " + responseInit["status"]); 33 assert_equals(clonedResponse.statusText, responseInit["statusText"], 34 "Expect response.statusText is " + responseInit["statusText"]); 35 assert_equals(clonedResponse.headers.get("name"), "value", 36 "Expect response.headers has name:value header"); 37 }, "Check Response's clone has the expected attribute values"); 38 39 promise_test(function(test) { 40 return validateStreamFromString(response.body.getReader(), body); 41 }, "Check original response's body after cloning"); 42 43 promise_test(function(test) { 44 return validateStreamFromString(clonedResponse.body.getReader(), body); 45 }, "Check cloned response's body"); 46 47 promise_test(function(test) { 48 var disturbedResponse = new Response("data"); 49 return disturbedResponse.text().then(function() { 50 assert_true(disturbedResponse.bodyUsed, "response is disturbed"); 51 assert_throws_js(TypeError, function() { disturbedResponse.clone(); }, 52 "Expect TypeError exception"); 53 }); 54 }, "Cannot clone a disturbed response"); 55 56 promise_test(function(t) { 57 var clone; 58 var result; 59 var response; 60 return fetch('../resources/trickle.py?count=2&delay=100').then(function(res) { 61 clone = res.clone(); 62 response = res; 63 return clone.text(); 64 }).then(function(r) { 65 assert_equals(r.length, 26); 66 result = r; 67 return response.text(); 68 }).then(function(r) { 69 assert_equals(r, result, "cloned responses should provide the same data"); 70 }); 71 }, 'Cloned responses should provide the same data'); 72 73 promise_test(function(t) { 74 var clone; 75 return fetch('../resources/trickle.py?count=2&delay=100').then(function(res) { 76 clone = res.clone(); 77 res.body.cancel(); 78 assert_true(res.bodyUsed); 79 assert_false(clone.bodyUsed); 80 return clone.arrayBuffer(); 81 }).then(function(r) { 82 assert_equals(r.byteLength, 26); 83 assert_true(clone.bodyUsed); 84 }); 85 }, 'Cancelling stream should not affect cloned one'); 86 87 function testReadableStreamClone(initialBuffer, bufferType) 88 { 89 promise_test(function(test) { 90 var response = new Response(new ReadableStream({start : function(controller) { 91 controller.enqueue(initialBuffer); 92 controller.close(); 93 }})); 94 95 var clone = response.clone(); 96 var stream1 = response.body; 97 var stream2 = clone.body; 98 99 var buffer; 100 return stream1.getReader().read().then(function(data) { 101 assert_false(data.done); 102 assert_equals(data.value, initialBuffer, "Buffer of being-cloned response stream is the same as the original buffer"); 103 return stream2.getReader().read(); 104 }).then(function(data) { 105 assert_false(data.done); 106 if (initialBuffer instanceof ArrayBuffer) { 107 assert_true(data.value instanceof ArrayBuffer, "Cloned buffer is ArrayBuffer"); 108 assert_equals(initialBuffer.byteLength, data.value.byteLength, "Length equal"); 109 assert_array_equals(new Uint8Array(data.value), new Uint8Array(initialBuffer), "Cloned buffer chunks have the same content"); 110 } else if (initialBuffer instanceof DataView) { 111 assert_true(data.value instanceof DataView, "Cloned buffer is DataView"); 112 assert_equals(initialBuffer.byteLength, data.value.byteLength, "Lengths equal"); 113 assert_equals(initialBuffer.byteOffset, data.value.byteOffset, "Offsets equal"); 114 for (let i = 0; i < initialBuffer.byteLength; ++i) { 115 assert_equals( 116 data.value.getUint8(i), initialBuffer.getUint8(i), "Mismatch at byte ${i}"); 117 } 118 } else { 119 assert_array_equals(data.value, initialBuffer, "Cloned buffer chunks have the same content"); 120 } 121 assert_equals(Object.getPrototypeOf(data.value), Object.getPrototypeOf(initialBuffer), "Cloned buffers have the same type"); 122 assert_not_equals(data.value, initialBuffer, "Buffer of cloned response stream is a clone of the original buffer"); 123 }); 124 }, "Check response clone use structureClone for teed ReadableStreams (" + bufferType + "chunk)"); 125 } 126 127 var arrayBuffer = new ArrayBuffer(16); 128 testReadableStreamClone(new Int8Array(arrayBuffer, 1), "Int8Array"); 129 testReadableStreamClone(new Int16Array(arrayBuffer, 2, 2), "Int16Array"); 130 testReadableStreamClone(new Int32Array(arrayBuffer), "Int32Array"); 131 testReadableStreamClone(arrayBuffer, "ArrayBuffer"); 132 testReadableStreamClone(new Uint8Array(arrayBuffer), "Uint8Array"); 133 testReadableStreamClone(new Uint8ClampedArray(arrayBuffer), "Uint8ClampedArray"); 134 testReadableStreamClone(new Uint16Array(arrayBuffer, 2), "Uint16Array"); 135 testReadableStreamClone(new Uint32Array(arrayBuffer), "Uint32Array"); 136 testReadableStreamClone(typeof BigInt64Array === "function" ? new BigInt64Array(arrayBuffer) : undefined, "BigInt64Array"); 137 testReadableStreamClone(typeof BigUint64Array === "function" ? new BigUint64Array(arrayBuffer) : undefined, "BigUint64Array"); 138 testReadableStreamClone(typeof Float16Array === "function" ? new Float16Array(arrayBuffer) : undefined, "Float16Array"); 139 testReadableStreamClone(new Float32Array(arrayBuffer), "Float32Array"); 140 testReadableStreamClone(new Float64Array(arrayBuffer), "Float64Array"); 141 testReadableStreamClone(new DataView(arrayBuffer, 2, 8), "DataView");