Bumrah has picked up 62 wickets in just 12 Tests and was magical in the recent tour of the West Indies, where he scalped 13 wickets in two Tests, including a hat-trick.
Bumrah is also the first Asian pacer to take five-wicket hauls in South Africa, England, Australia and the West Indies, besides becoming the fastest Indian fast bowler to 50 Test wickets.
"For me, Test cricket was very important and I always wanted to play Tests and didn't want to be a cricketer who has played (only) T20s and ODIs. I gave a lot of importance to Test cricket... I always wanted to make a mark in Tests," Bumrah said at a promotional event here on Friday.
"I had the belief that I do well in first-class cricket, I could replicate that in Test matches. The journey has just started and I have just played 12 Tests. When I made my Test debut in South Africa after playing two years of international cricket, it was a dream come true (moment).
"Playing in the white jersey was a great feeling, and then slowly contributing to the team's success gave me satisfaction," said Bumrah, who is the third Indian to pick a Test hat-trick after Harbhajan Singh and Irfan Pathan.
Quizzed about his away going delivery, Bumrah said, "Not mastering it, but I always had the out-swinger and not used it. But playing in England gave me a lot of confidence... the duke ball swings for a long time and that gave me a lot of confidence. I became more confident as I played more Tests."