test: validate missing encoding in to_string (#606) #1448

	name: Ubuntu 20.04

	on:
	pull_request:
	types: [opened, synchronize, reopened, ready_for_review]
	paths-ignore:
	- '**.md'
	- 'docs/**'
	push:
	branches:
	- main
	paths-ignore:
	- '**.md'
	- 'docs/**'

	permissions:
	contents: read

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	ubuntu-build:
	runs-on: ubuntu-20.04
	strategy:
	matrix:
	shared: [ON, OFF]
	cxx: [g++-9, clang++-10]
	steps:
	- uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v3.6.0
	- name: Setup Ninja
	run: sudo apt-get install ninja-build
	- name: Prepare
	run: cmake -DBUILD_SHARED_LIBS=${{matrix.shared}} -G Ninja -B build
	env:
	CXX: ${{matrix.cxx}}
	- name: Build
	run: cmake --build build -j=2
	- name: Test
	run: ctest --output-on-failure --test-dir build

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