checkElementPushBuffer

void checkElementPushBuffer(string elementName,  gst.buffer.Buffer bufferIn,  gst.caps.Caps capsIn,  gst.buffer.Buffer bufferOut,  gst.caps.Caps capsOut)

Create an element using the factory providing the element_name and push the buffer_in to this element. The element should create one buffer and this will be compared with buffer_out. We only check the caps and the data of the buffers. This function unrefs the buffers.

Parameters

`elementName`	name of the element that needs to be created
`bufferIn`	push this buffer to the element
`capsIn`	the #GstCaps expected of the sinkpad of the element
`bufferOut`	compare the result with this buffer
`capsOut`	the #GstCaps expected of the srcpad of the element