Stephen White (31) is also alleged to have made drunken threats to the pregnant garda and her male colleague, telling them "you'll f***ing regret this", "you'll feel my wrath" and "I'll have you". White has denied the charges.
Garda Jennifer Brogan was worried at the time about her unborn child, but she told a court there have been no difficulties.
Judge Anthony Halpin adjourned the matter for one week to allow the defence bring a witness to court.
The accused, of Tymonville Road in Tallaght, has denied before Tallaght District Court charges of public drunkenness, threatening and abusive behaviour, obstructing Detective Garda Michael McGrath and assaulting Garda Jennifer Brogan. The alleged incident took place on the Tallaght Bypass on September 10 last.
Garda McGrath previously said he stopped White crossing the Tallaght Bypass around 8.20pm for the purposes of a drugs search, as he had turned away when he saw gardai and appeared to be fidgeting in his pocket.
Garda McGrath claimed White was aggressive, shouting "F*** off, my da's a garda, take me back to the station".
The court heard White was drunk and unsteady on his feet and further shouted: "F**k off, you'll f***in regret this", and "you'll feel my wrath".
Garda McGrath alleged White struggled with him and refused to allow him to put on the handcuffs, and a member of the public came over to help put them on.
Garda Brogan said she was helping to place White in the back of the patrol car when he sat back and kicked out, hitting her in the stomach.
Garda Brogan, now eight months pregnant, said she was four months pregnant at the time, and was worried at the time about her unborn child.
Defence solicitor Kevin Tunney claimed White will say he asked gardai to bring him to the station for a drugs search as it was embarrassing being searched at the side of the road.
Mr Tunney also said White will say he banged his head as he was forcefully pushed into the car and he did not intentionally kick Garda Brogan.
Judge Halpin adjourned the matter for one week to allow White to summons a witness to court.