Add doc #8

	# .github/workflows/pgtest.yml
	name: Postgres tests

	on: push

	jobs:
	pgtap:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	version: [ '16', '17' ]

	container: pgxn/pgxn-tools
	env:
	PGUSER: postgres

	steps:
	- run: pg-start ${{ matrix.version }}
	- uses: actions/checkout@main

	# Basic regression test.
	- run: pg-build-test

	# Basic regression test.
	- name: install dependency
	run: pgxn install ddl_historization

	- name: build application
	run: make all

	- name: install extension
	run: make install

	- name: create extension
	run: >-
	psql --host localhost --username postgres --dbname postgres \
	-c 'CREATE EXTENSION schedoc CASCADE'
	env:
	PGPASSWORD: postgres

	- name: Checkout pgtap
	uses: actions/checkout@v4
	with:
	repository: theory/pgtap
	path: pgtap
	ref: v1.3.3

	- name: install pgtap
	working-directory: pgtap
	run: make && psql --host localhost --username postgres --dbname postgres --file sql/pgtap.sql
	env:
	PGPASSWORD: postgres

	- name: run unit tests
	run: pg_prove --host localhost --dbname postgres --username postgres test/sql/*.sql
	env:
	PGPASSWORD: postgres

	- name: run integration tests
	run: pg_prove --host localhost --dbname postgres --username postgres test/*.sql
	env:
	PGPASSWORD: postgres

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