fn test_ffi_serialize()

in uniffi_core/src/ffi/ffiserialize.rs [269:348]

• 75 lines of code
• 1 McCabe index (conditional complexity)

    fn test_ffi_serialize() {
        let mut some_data = vec![1, 2, 3];
        let void_ptr = some_data.as_mut_ptr() as *const std::ffi::c_void;
        let rust_buffer = unsafe { RustBuffer::from_raw_parts(some_data.as_mut_ptr(), 2, 3) };
        let orig_rust_buffer_data = (
            rust_buffer.data_pointer(),
            rust_buffer.len(),
            rust_buffer.capacity(),
        );
        let handle = unsafe { Handle::from_raw(101).unwrap() };
        let rust_call_status = RustCallStatus::default();
        let rust_call_status_error_buf = &rust_call_status.error_buf;
        let orig_rust_call_status_buffer_data = (
            rust_call_status_error_buf.data_pointer(),
            rust_call_status_error_buf.len(),
            rust_call_status_error_buf.capacity(),
        );
        let mut buf = [FfiBufferElement::default(); 21];
        let mut buf_writer = buf.as_mut_slice();
        <u8 as FfiSerialize>::write(&mut buf_writer, 0);
        <i8 as FfiSerialize>::write(&mut buf_writer, 1);
        <u16 as FfiSerialize>::write(&mut buf_writer, 2);
        <i16 as FfiSerialize>::write(&mut buf_writer, 3);
        <u32 as FfiSerialize>::write(&mut buf_writer, 4);
        <i32 as FfiSerialize>::write(&mut buf_writer, 5);
        <u64 as FfiSerialize>::write(&mut buf_writer, 6);
        <i64 as FfiSerialize>::write(&mut buf_writer, 7);
        <f32 as FfiSerialize>::write(&mut buf_writer, 0.1);
        <f64 as FfiSerialize>::write(&mut buf_writer, 0.2);
        <bool as FfiSerialize>::write(&mut buf_writer, true);
        <*const std::ffi::c_void as FfiSerialize>::write(&mut buf_writer, void_ptr);
        <RustBuffer as FfiSerialize>::write(&mut buf_writer, rust_buffer);
        <RustCallStatus as FfiSerialize>::write(&mut buf_writer, rust_call_status);
        <Handle as FfiSerialize>::write(&mut buf_writer, handle);
        #[allow(clippy::needless_borrows_for_generic_args)]
        <() as FfiSerialize>::write(&mut buf_writer, ());

        let mut buf_reader = buf.as_slice();
        assert_eq!(<u8 as FfiSerialize>::read(&mut buf_reader), 0);
        assert_eq!(<i8 as FfiSerialize>::read(&mut buf_reader), 1);
        assert_eq!(<u16 as FfiSerialize>::read(&mut buf_reader), 2);
        assert_eq!(<i16 as FfiSerialize>::read(&mut buf_reader), 3);
        assert_eq!(<u32 as FfiSerialize>::read(&mut buf_reader), 4);
        assert_eq!(<i32 as FfiSerialize>::read(&mut buf_reader), 5);
        assert_eq!(<u64 as FfiSerialize>::read(&mut buf_reader), 6);
        assert_eq!(<i64 as FfiSerialize>::read(&mut buf_reader), 7);
        assert_eq!(<f32 as FfiSerialize>::read(&mut buf_reader), 0.1);
        assert_eq!(<f64 as FfiSerialize>::read(&mut buf_reader), 0.2);
        assert!(<bool as FfiSerialize>::read(&mut buf_reader));
        assert_eq!(
            <*const std::ffi::c_void as FfiSerialize>::read(&mut buf_reader),
            void_ptr
        );
        let rust_buffer2 = <RustBuffer as FfiSerialize>::read(&mut buf_reader);
        assert_eq!(
            (
                rust_buffer2.data_pointer(),
                rust_buffer2.len(),
                rust_buffer2.capacity()
            ),
            orig_rust_buffer_data,
        );

        let rust_call_status2 = <RustCallStatus as FfiSerialize>::read(&mut buf_reader);
        assert_eq!(rust_call_status2.code, RustCallStatusCode::Success);

        let rust_call_status2_error_buf = ManuallyDrop::into_inner(rust_call_status2.error_buf);
        assert_eq!(
            (
                rust_call_status2_error_buf.data_pointer(),
                rust_call_status2_error_buf.len(),
                rust_call_status2_error_buf.capacity(),
            ),
            orig_rust_call_status_buffer_data
        );
        assert_eq!(<Handle as FfiSerialize>::read(&mut buf_reader), handle);
        // Ensure that `read` with a unit struct doesn't panic.  No need to assert anything, since
        // the return type is ().
        <() as FfiSerialize>::read(&mut buf_reader);
    }