我有一个测试，该测试应读取图像文件并将图像文件提交到接受multipart-formdata的api。
我正在将fetch api和formdata类一起使用来设置图像文件。 formdata仅接受一个blob。因此，在测试中，我必须将读取的流类型为blob的文件转换为blob。
<?php
$connect = mysqli_connect("localhost", "root", "", "datedate");
$query = "SELECT * FROM tbl_order ORDER BY order_id asc";
$result = mysqli_query($connect, $query);
?>
<!DOCTYPE html>
<html>
<head>
<title>Ajax PHP MySQL Date Range Search using jQuery DatePicker</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.11.4/themes/smoothness/jquery-ui.css">
</head>
<body>
<br /><br />
<div class="container" style="width:900px;">
<h2 align="center">Ajax PHP MySQL Date Range Search using jQuery DatePicker</h2>
<h3 align="center">Order Data</h3><br />
<div class="col-md-3">
<input type="text" name="from_date" id="from_date" class="form-control" placeholder="From Date" />
</div>
<div class="col-md-3">
<input type="text" name="to_date" id="to_date" class="form-control" placeholder="To Date" />
</div>
<div class="col-md-5">
<input type="button" name="filter" id="filter" value="Filter" class="btn btn-info" />
</div>
<div style="clear:both"></div>
<br />
<div id="order_table">
<table class="table table-bordered">
<tr>
<th width="5%">ID</th>
<th width="30%">Customer Name</th>
<th width="43%">Item</th>
<th width="10%">Value</th>
<th width="12%">Order Date</th>
</tr>
<?php
while($row = mysqli_fetch_array($result))
{
?>
<tr>
<td><?php echo $row["order_id"]; ?></td>
<td><?php echo $row["order_customer_name"]; ?></td>
<td><?php echo $row["order_item"]; ?></td>
<td>$ <?php echo $row["order_value"]; ?></td>
<td><?php echo $row["order_date"]; ?></td>
</tr>
<?php
}
?>
</table>
</div>
</div>
</body>
</html>
<script>
$(document).ready(function(){
$.datepicker.setDefaults({
dateFormat: 'yy-mm-dd'
});
$(function(){
$("#from_date").datepicker();
$("#to_date").datepicker();
});
$('#filter').click(function(){
var from_date = $('#from_date').val();
var to_date = $('#to_date').val();
if(from_date != '' && to_date != '')
{
$.ajax({
url:"print.php",
method:"POST",
data:{from_date:from_date, to_date:to_date},
success:function(data)
{
$('#order_table').html(data);
}
});
}
else
{
alert("Please Select Date");
}
});
});
</script>
我正在尝试使用此处的库将流转换为Blob https://www.npmjs.com/package/stream-to-blob。但是，测试失败。如果我尝试 test("should submit front document", async () => {
const side = "front";
const stream = fs.createReadStream(process.cwd() + "/test/resources/" + "id/front.jpg");
const image = await streamToBlob(stream);
const front = await myLibrary.document(id, side, image);
expect(front.success).toBe(true);
});
，则会得到以下console.log(image)
为什么blob为空{}？
Blob {}