fix check decimal scale equal to precision #933

	name: Check and test

	on: [push, pull_request]

	jobs:
	test:
	name: Test
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: true
	- name: Install Rust
	run: rustup update stable
	- uses: Swatinem/rust-cache@v1
	- name: Setup parquet files
	run: \|
	apt update && apt install python3-pip python3-venv -y -q
	python3 -m venv venv
	source venv/bin/activate
	pip install pip --upgrade
	pip install pyarrow==6
	python tests/write_pyarrow.py
	deactivate
	- name: Run
	run: \|
	cargo test --features full
	cargo check # compiles without async
	- name: Run lz4-flex
	run: cargo test --no-default-features --features lz4_flex,bloom_filter,snappy,brotli,zstd,gzip,async

	clippy:
	name: Clippy
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Install Rust
	run: rustup update stable
	- uses: Swatinem/rust-cache@v1
	- name: Install clippy
	run: rustup component add clippy
	- name: "clippy"
	run: cargo clippy

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