Fix errors caught by Dialyzer #132

	name: CI

	on:
	pull_request:
	push:
	branches:
	- master

	jobs:
	integration-test:
	name: integration test
	runs-on: ubuntu-latest
	env:
	FORCE_COLOR: 1
	strategy:
	fail-fast: false
	matrix:
	elixirbase:
	- "1.11.3-erlang-23.2.5-alpine-3.16.0"
	- "1.14.3-erlang-25.3-alpine-3.17.2"
	steps:
	- uses: actions/checkout@v2
	- name: Download released earthly
	run: "sudo /bin/sh -c 'wget https://github.com/earthly/earthly/releases/download/v0.7.2/earthly-linux-amd64 -O /usr/local/bin/earthly && chmod +x /usr/local/bin/earthly'"
	- name: Kafka Brodway integration-test under ${{matrix.elixirbase}}
	run: earthly -P --ci --build-arg ELIXIR_BASE=${{matrix.elixirbase}} +integration-test
	test:
	runs-on: ubuntu-20.04
	env:
	MIX_ENV: test
	strategy:
	fail-fast: false
	matrix:
	include:
	- pair:
	elixir: 1.7.4
	otp: 21.3.8.17
	- pair:
	elixir: 1.15.6
	otp: 26.1.1
	lint: lint
	steps:
	- uses: actions/checkout@v2

	- uses: erlef/setup-beam@v1
	with:
	otp-version: ${{matrix.pair.otp}}
	elixir-version: ${{matrix.pair.elixir}}

	- uses: actions/cache@v2
	with:
	path: \|
	deps
	_build
	key: ${{ runner.os }}-mix-${{matrix.pair.elixir}}-${{matrix.pair.otp}}-${{ hashFiles('**/mix.lock') }}
	restore-keys: \|
	${{ runner.os }}-mix-${{matrix.pair.elixir}}-${{matrix.pair.otp}}-

	- run: mix deps.get

	- run: mix format --check-formatted
	if: ${{ matrix.lint }}

	- run: mix deps.unlock --check-unused
	if: ${{ matrix.lint }}

	- run: mix deps.compile

	- run: mix compile --warnings-as-errors
	if: ${{ matrix.lint }}

	- run: mix test

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