Bring a pot of salted water to boil and prepare a bowl of ice water.
Cook green beans until bright green; transfer with a slotted spoon to ice water.
Drain and set aside.
2.
In a mini food processor, combine basil, lemon juice, and garlic and pulse to combine.
With the motor running, add olive oil in a steady stream until smooth, then season generously with salt and pepper.
3.
In a large bowl, combine farro, tomatoes, chickpeas, and green beans, then pour over basil vinaigrette and toss gently to combine.
Season with salt and pepper.