fix(events-processor): Ensure grouped by is not nil #185

	name: Events Processor Tests

	on:
	push:
	branches:
	- main
	pull_request:
	types:
	- opened
	- synchronize
	- reopened
	paths:
	- "events-processor/**"

	jobs:
	test:
	name: Run go tests
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: ./events-processor

	services:
	postgres:
	image: postgres:14-alpine
	ports:
	- "5432:5432"
	env:
	POSTGRES_DB: lago
	POSTGRES_USER: lago
	POSTGRES_PASSWORD: lago

	env:
	DATABASE_URL: "postgres://lago:lago@localhost:5432/lago"

	steps:
	- name: Checkout code
	uses: actions/checkout@v3

	- name: Checkout lago expression code
	uses: actions/checkout@v3
	with:
	repository: getlago/lago-expression
	path: lago-expression
	ref: v0.1.4

	- name: Build lago-expression
	working-directory: ./lago-expression
	run: cargo build --release

	- name: Copy lago-expression shared library
	working-directory: ./lago-expression
	run: \|
	mkdir -p /tmp/libs
	sudo cp ./target/release/libexpression_go.so /usr/local/lib/libexpression_go.so
	sudo ldconfig

	- name: Setup Go
	uses: actions/setup-go@v4
	with:
	go-version: "1.24.0"

	- name: Run tests
	run: go test -v ./...

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