if introspection returns no columns, preserve any manually written columns #14

	name: "Test Suite"
	on:
	pull_request:

	jobs:
	test:
	name: cargo test
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	# this defaults to "-D warnings", making warnings fail the entire build.
	# setting to empty strng to allow builds with warnings
	# todo: consider removing this, and disallowing pushing with warnings?
	rustflags: ""
	- run: cargo test --all-features

	# Check formatting with rustfmt
	formatting:
	name: cargo fmt
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	# Ensure rustfmt is installed and setup problem matcher
	- uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	components: rustfmt
	# this defaults to "-D warnings", making warnings fail the entire build.
	# setting to empty strng to allow builds with warnings
	# todo: consider removing this, and disallowing pushing with warnings?
	rustflags: ""
	- name: Rustfmt Check
	uses: actions-rust-lang/rustfmt@v1

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