The phrase "and testing have been" is correct and usable in written English.
It can be used when discussing ongoing actions or processes that include testing as part of a broader context.
Example: "The development and testing have been progressing smoothly over the last few weeks."
Alternatives: "and testing has been" or "and testing are ongoing".
As described in Section 4.1.1, two data sets for training and testing have been produced.
Thermodynamic system analysis, components commissioning, control strategies implementation and testing have been performed.
A review of current research shows insufficient monitoring and testing have been conducted to reliably assess the degree of environmental risks posed by transgenic crops.
Although the concepts of institutions in economics and institutional analysis have been integrated in recent writings about payments for ecosystem services (PES), their joint operationalization and testing have been limited.
The development of a low-cost active tip bending system for a scanning fiber endoscope or catheterscope has been initiated and proof-of-concept fabrication and testing have been conducted.
Meanwhile, voluntary HIV counseling and testing have been implemented chiefly in public health centers on a free-of-charge basis, and rapid antibody tests are widely used for screening testing.
(This was the evidence that was later lost, and now, after its rediscovery and testing, has been shown to be the hair of a Caucasian).
The classifier model has been built using training folds and testing has been conducted using the remaining fold.
There are many different approaches for evaluating system dependability, and testing has been always an important one, being fault removal one of the means to achieve dependable systems.
The routine application of molecular biomarkers in field monitoring and testing has been limited to veterinary health.
