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directory_test(async (t, root) => {
const fileContents = 'awesome content';
let handle = await createFileWithContents(t, 'foo.txt', fileContents, /*parent=*/ root);
let file = await handle.getFile();
let slice = file.slice(1, file.size);
let actualContents = await slice.text();
assert_equals(actualContents, fileContents.slice(1, fileContents.length));
}, 'getFile() provides a file that can be sliced');
directory_test(async (t, root) => {
const handle = await createEmptyFile(t, 'mtime.txt', root);
let file = await handle.getFile();
const first_mtime = file.lastModified;
// We wait for 2s here to ensure that the files do not have the
// same modification time. Some filesystems have low resolutions
// for modification timestamps.
let timeout = new Promise(resolve => {
t.step_timeout(resolve, 2000);
});
await timeout;
const writer = await handle.createWritable({keepExistingData: false});
await writer.write(new Blob(['foo']));
await writer.close();
file = await handle.getFile();
const second_mtime = file.lastModified;
// We wait for 5 ms here to ensure that `lastModified`
// from the File objects is stable between getFile invocations.
timeout = new Promise(resolve => {
t.step_timeout(resolve, 5);
});
await timeout;
let fileReplica = await handle.getFile();
assert_equals(second_mtime, fileReplica.lastModified);
assert_less_than(first_mtime, second_mtime);
}, 'getFile() returns last modified time');
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