The first test, which will take place in Spain, had originally been due to take place in the week commencing January 20.
However, following discussions at a team managers' meeting in Hungary on Sunday, it has been decided that this first test will now take place a week later.
The teams also agreed that there will be two Middle East tests before the first race, but no agreement was reached on whether these would take place in Abu Dhabi, Bahrain or Dubai.
Although Dubai remains the clear favourite to secure the tests, there is believed to be some scepticism about its value for testing both tyres and engines.
Further discussions about which venue to choose will now likely be delayed until after the summer break, with teams preparing for the imminent factory shutdowns.