tests

Replace standard json library by segmentio's library #687

	name: tests
	on:
	push:
	pull_request:

	jobs:
	test:
	name: run tests with code coverage
	runs-on: ubuntu-latest
	strategy:
	matrix:
	go:
	- "1.20"
	- "1.19"
	- "1.18"
	- "1.17"
	- "1.16"
	- "1.15"
	- "1.14"
	- "1.13"

	steps:
	- name: Set up Go ${{ matrix.go }}
	uses: actions/setup-go@v3
	with:
	go-version: ${{ matrix.go }}

	- run: go version

	- name: install lambda runtime interface emulator
	run: curl -L -o /usr/local/bin/aws-lambda-rie https://github.com/aws/aws-lambda-runtime-interface-emulator/releases/latest/download/aws-lambda-rie-x86_64
	- run: chmod +x /usr/local/bin/aws-lambda-rie

	- name: Check out code into the Go module directory
	uses: actions/checkout@v3

	- name: go test
	run: go test -v -race -coverprofile=coverage.txt -covermode=atomic ./...

	- name: Upload coverage to Codecov
	uses: codecov/codecov-action@v3
	with:
	file: ./coverage.txt
	env_vars: GO
	env:
	GO: ${{ matrix.go }}

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