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<!doctype html>
<script src="../../resources/js-test.js"></script>
<script src="resources/read-common.js"></script>
<script>
description("Test the Blob.close() method, reading.");
window.jsTestIsAsync = true;
var blobContents = ['0123456789abcdef'];
var blob;
var sliced;
var reader;
var reader2;
var result;
function testReadAfterClose()
{
debug("Testing that the reading of closed Blobs fail.");
blob = new Blob(blobContents);
shouldBe("blob.close(); blob.size", "0");
reader = new FileReader();
shouldThrow("reader.readAsArrayBuffer(blob)");
shouldThrow("reader.readAsBinaryString(blob)");
shouldThrow("reader.readAsText(blob)");
shouldThrow("reader.readAsDataURL(blob)");
runNextTest();
}
function testSlicedReadAfterClose()
{
debug("Testing that sliced reads aren't affected by close() on 'parent' Blob.");
blob = new Blob(blobContents);
sliced = blob.slice(2);
shouldBe("sliced.size", "14");
blob.close();
var reader = new FileReader();
reader.onload = function(event) {
result = event.target.result;
shouldBeEqualToString("result", blobContents[0].slice(2));
}
reader.onloadend = function() {
testPassed("readAsText() completed");
shouldBe("sliced.size", "14");
runNextTest();
}
reader.onerror = function(event) {
testFailed("Received error event: " + event.target.error.code);
};
reader.readAsText(sliced);
}
function testContinuedReadAfterClose()
{
debug("Testing that ongoing async reads aren't interrupted by close()");
blob = new Blob(blobContents);
var reader = new FileReader();
reader.onloadstart = function(event) {
// Close the Blob being read.
blob.close();
reader2 = new FileReader();
shouldThrow("reader2.readAsArrayBuffer(blob)");
shouldBe("blob.size", "0");
}
reader.onload = function(event) {
testPassed("FileReader loaded: " + event.target.result);
}
reader.onloadend = function() {
testPassed("readAsText() completed");
shouldBe("blob.size", "0");
runNextTest();
}
reader.onerror = function(event) {
testFailed("Received error event: " + event.target.error.code);
runNextTest();
};
reader.readAsText(blob);
}
var tests = [
testReadAfterClose,
testContinuedReadAfterClose,
testSlicedReadAfterClose ];
function runNextTest()
{
if (!tests.length) {
finishJSTest();
return;
}
tests.shift()();
}
runNextTest();
</script>
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