1 files changed, 126 insertions, 0 deletions
diff --git a/testing/web-platform/tests/fetch/api/response/response-clone.any.js b/testing/web-platform/tests/fetch/api/response/response-clone.any.js
new file mode 100644
index 0000000000..9f4f36ed2d
--- /dev/null
+++ b/testing/web-platform/tests/fetch/api/response/response-clone.any.js
@@ -0,0 +1,126 @@
+// META: global=window,worker
+// META: title=Response clone
+// META: script=../resources/utils.js
+
+var defaultValues = { "type" : "default",
+                      "url" : "",
+                      "ok" : true,
+                      "status" : 200,
+                      "statusText" : ""
+};
+
+var response = new Response();
+var clonedResponse = response.clone();
+test(function() {
+  for (var attributeName in defaultValues) {
+      var expectedValue = defaultValues[attributeName];
+      assert_equals(clonedResponse[attributeName], expectedValue,
+        "Expect default response." + attributeName + " is " + expectedValue);
+  }
+}, "Check Response's clone with default values, without body");
+
+var body = "This is response body";
+var headersInit = { "name" : "value" };
+var responseInit  = { "status" : 200,
+                      "statusText" : "GOOD",
+                      "headers" : headersInit
+};
+var response = new Response(body, responseInit);
+var clonedResponse = response.clone();
+test(function() {
+  assert_equals(clonedResponse.status, responseInit["status"],
+    "Expect response.status is " + responseInit["status"]);
+  assert_equals(clonedResponse.statusText, responseInit["statusText"],
+    "Expect response.statusText is " + responseInit["statusText"]);
+  assert_equals(clonedResponse.headers.get("name"), "value",
+    "Expect response.headers has name:value header");
+}, "Check Response's clone has the expected attribute values");
+
+promise_test(function(test) {
+  return validateStreamFromString(response.body.getReader(), body);
+}, "Check orginal response's body after cloning");
+
+promise_test(function(test) {
+  return validateStreamFromString(clonedResponse.body.getReader(), body);
+}, "Check cloned response's body");
+
+promise_test(function(test) {
+  var disturbedResponse = new Response("data");
+  return disturbedResponse.text().then(function() {
+      assert_true(disturbedResponse.bodyUsed, "response is disturbed");
+      assert_throws_js(TypeError, function() { disturbedResponse.clone(); },
+        "Expect TypeError exception");
+  });
+}, "Cannot clone a disturbed response");
+
+promise_test(function(t) {
+    var clone;
+    var result;
+    var response;
+    return fetch('../resources/trickle.py?count=2&delay=100').then(function(res) {
+        clone = res.clone();
+        response = res;
+        return clone.text();
+    }).then(function(r) {
+        assert_equals(r.length, 26);
+        result = r;
+        return response.text();
+    }).then(function(r) {
+        assert_equals(r, result, "cloned responses should provide the same data");
+    });
+  }, 'Cloned responses should provide the same data');
+
+promise_test(function(t) {
+    var clone;
+    return fetch('../resources/trickle.py?count=2&delay=100').then(function(res) {
+        clone = res.clone();
+        res.body.cancel();
+        assert_true(res.bodyUsed);
+        assert_false(clone.bodyUsed);
+        return clone.arrayBuffer();
+    }).then(function(r) {
+        assert_equals(r.byteLength, 26);
+        assert_true(clone.bodyUsed);
+    });
+}, 'Cancelling stream should not affect cloned one');
+
+function testReadableStreamClone(initialBuffer, bufferType)
+{
+    promise_test(function(test) {
+        var response = new Response(new ReadableStream({start : function(controller) {
+            controller.enqueue(initialBuffer);
+            controller.close();
+        }}));
+
+        var clone = response.clone();
+        var stream1 = response.body;
+        var stream2 = clone.body;
+
+        var buffer;
+        return stream1.getReader().read().then(function(data) {
+            assert_false(data.done);
+            assert_equals(data.value, initialBuffer, "Buffer of being-cloned response stream is the same as the original buffer");
+            return stream2.getReader().read();
+        }).then(function(data) {
+            assert_false(data.done);
+            assert_array_equals(data.value, initialBuffer, "Cloned buffer chunks have the same content");
+            assert_equals(Object.getPrototypeOf(data.value), Object.getPrototypeOf(initialBuffer), "Cloned buffers have the same type");
+            assert_not_equals(data.value, initialBuffer, "Buffer of cloned response stream is a clone of the original buffer");
+        });
+    }, "Check response clone use structureClone for teed ReadableStreams (" + bufferType  + "chunk)");
+}
+
+var arrayBuffer = new ArrayBuffer(16);
+testReadableStreamClone(new Int8Array(arrayBuffer, 1), "Int8Array");
+testReadableStreamClone(new Int16Array(arrayBuffer, 2, 2), "Int16Array");
+testReadableStreamClone(new Int32Array(arrayBuffer), "Int32Array");
+testReadableStreamClone(arrayBuffer, "ArrayBuffer");
+testReadableStreamClone(new Uint8Array(arrayBuffer), "Uint8Array");
+testReadableStreamClone(new Uint8ClampedArray(arrayBuffer), "Uint8ClampedArray");
+testReadableStreamClone(new Uint16Array(arrayBuffer, 2), "Uint16Array");
+testReadableStreamClone(new Uint32Array(arrayBuffer), "Uint32Array");
+testReadableStreamClone(typeof BigInt64Array === "function" ? new BigInt64Array(arrayBuffer) : undefined, "BigInt64Array");
+testReadableStreamClone(typeof BigUint64Array === "function" ? new BigUint64Array(arrayBuffer) : undefined, "BigUint64Array");
+testReadableStreamClone(new Float32Array(arrayBuffer), "Float32Array");
+testReadableStreamClone(new Float64Array(arrayBuffer), "Float64Array");
+testReadableStreamClone(new DataView(arrayBuffer, 2, 8), "DataView");