Livewire winger Tom Johnstone scored four tries in what ended up being a tough battle despite the two division difference between the two teams.
Wakefield took an early lead with two tries in the first 10 minutes. First it was Johnstone who dived over, set up by a Jacob Miller cut-out pass.
Then it was Miller himself who dummied and crashed over, to set up a 10-0 lead.
The Wildcats were having a field day and soon Craig Hall was in, after taking an intercept and running 80 metres.
Next up Johnstone finished off a break from Matty Ashurst for his second try.
Toulouse were down 22-0 and strugglng in the Yokrkshire sun.
But the French club hit back in style, a series of offloads putting Gavin Marguerite in space and the centre finished in style.
Five minutes later Toulouse had a second when substitute Mourad Kriouache barged over.
At 22-10 at half-time the visitors were back in the game.
The second half turned into a real arm wrestle with few attacking opportunities.
Eventually it was Wakefield who broke the deadlock, Matt Ashurst falling on a scrappy kick to make it 28-10.
Danny Hulme gave Toulouse some hope with an outrageous dummy and try with 16 minutes left.
And then Kuni Minga touched down and suddenly they were only six points behind with 12 minutes to go.
It was getting nervy for Wakefield, but Johnstone saved Trinity’s blushes when he dived on a loose ball and stepped the Toulouse fullback in the 72nd minute to get his third four-pointer of the afternoon.
The talented flyer still had time to add his four in the final stages to complete a 40-22 scoreline, one that was a touch harsh on a plucky Toulouse.