FakeUsbPlatform class
In-memory UsbPlatform for tests.
Tests configure devices, toggles, and delays; then construct the class under test with UsbConnection.withPlatform or UsbDiscovery.enumerateWith.
Exposed under package:flutter_zpl_printer/flutter_zpl_printer_testing.dart so consumer apps can
reuse it in their own widget/integration tests.
- Implemented types
Constructors
Properties
-
devices
→ List<
UsbDeviceRecord> -
Devices that enumerate returns (filtered by VID when
filter.vendorId != null).final - enumerateError ↔ Object?
-
If set, enumerate throws this instead of returning a list.
getter/setter pair
- hashCode → int
-
The hash code for this object.
no setterinherited
- isSupportedResult ↔ bool
-
Value returned from isSupported.
getter/setter pair
- openDelay ↔ Duration
-
Artificial delay applied inside openForFfi — useful for cancellation
tests.
getter/setter pair
- openError ↔ Object?
-
If set, openForFfi throws this instead of returning a handle.
getter/setter pair
- permissionGrantResult ↔ bool
-
Value returned from requestPermission. Default: granted.
getter/setter pair
- readError ↔ Object?
-
If set, readBytes throws this on every call.
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- writeError ↔ Object?
-
If set, writeBytes throws this on every call.
getter/setter pair
Methods
-
clearHalt(
{required int handleId, required int endpoint}) → Future< void> -
libusb_clear_halt on the given endpoint. Used after
LIBUSB_ERROR_PIPE to recover a stalled endpoint.
override
-
closeAfterFfi(
String path) → Future< void> -
override
-
closeHandle(
{required int handleId}) → Future< void> -
Releases the claimed interface and closes the libusb device handle.
Also terminates the worker isolate that owned the handle.
override
-
enumerate(
UsbEnumerateFilter filter) → Future< List< UsbDeviceRecord> > -
override
-
hasPermission(
String path) → Future< bool> -
override
-
isHandleOpen(
int handleId) → bool -
isSupported(
) → Future< bool> -
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
openForFfi(
String path) → Future< UsbOpenResult> -
override
-
queueRead(
int handleId, Uint8List data) → void -
Queue a byte buffer that will be returned by the next readBytes call
on
handleId. -
readBytes(
{required int handleId, required int maxBytes, required int timeoutMs}) → Future< Uint8List> -
Reads up to
maxBytesfrom the bulk-IN endpoint. Returns the actual bytes read (may be 0). Throws UsbTransferTimeoutException on timeout.override -
readStringDescriptor(
{required int handleId, required int index}) → Future< String?> -
Reads an ASCII string descriptor at
indexvia libusb_get_string_descriptor_ascii. Returns null on read failure.override -
requestPermission(
String path) → Future< bool> -
override
-
resetDevice(
{required int handleId}) → Future< void> -
libusb_reset_device. Caller must treat the handle as invalid after this
— typically followed by close + re-open.
override
-
toString(
) → String -
A string representation of this object.
inherited
-
writeBytes(
{required int handleId, required Uint8List data, required int timeoutMs}) → Future< void> -
Writes
datavia libusb_bulk_transfer on the bulk-OUT endpoint associated with the handle. The handle is the UsbOpenResult.platformHandle returned by openForFfi.override -
writesFor(
int handleId) → List< Uint8List> - Writes recorded for an open handle. Empty after closeHandle.
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited