The ones who are testing bowling action themselves are controversial including the techniques used to test actions.
University of Western Australia reprimanded ICC who have been using their proscribed techniques in testing and keeping the 'ridiculous secrecy' around the procedures used for testing bowlers.
Since the fallout between UWA and ICC in March 2014, the ICC [or Big 3 Uk, Aus, India] have been doing the tests themselves with their facilities in their respective countries. Chennai, Cardiff, Brisbane.
When the ICC [Big 3] banned Ajmal just before World Cup 2015, UWA came in and criticized the ICC. PCB made no defense of its players. Sethi-Shahryar Khan remained Missing-in-Action during this point of time.
After WC 2015 suddenly the frequency of reportings reduced, Indian bowler R. Ashwin was questioned by leading indian publications for his action. I still remember Bilal Asif was also reported and then forced to go to Chennai for testing and cleared. He took 5 for 25 and his action was made issue by referee Jukes [UK]. After Hafeez was banned for 12 months, this was another assault on Pakistan. Asif never played for Pakistan again after that.
These ICC procedures have only applied on players from Pakistan, Sri Lankan, South Africa[Subreyan] and Bangladesh, never against anyone from Big 3, where their own meida raised doubts about players like Ashwin, Ojha, R. Pawar, and Harbhajan.
Harbhajan was reported in 2005 and tested with UWA and India has made sure he was never reported again through limited selective tours.
Pakistanis need to learn about ICC testing procedures, we have bio-mechanics experts who can research and establish findings.
We have the Pakistani media which can mobilize the opinion.
What is needed is someone leading the Pcb who can organize this and pressure ICC to disclose their techniques and whether they are acceptable for sporting standards in conjunction with other major sports organizations.
PCB has played a really sad role, if there was an Arif Abbasi or Majid Khan, the way Saeed Ajmal and AShwin were treated unequally in 2014 would never have transpired.
Still there is a cloud over the ICC testing procedures which have to be addressed.