feat(test): unit test external call mock POC #1813

	# This workflow checks whether the library is able to run without the std
	# library. See `check.yml` for information about how the concurrency
	# cancellation and workflow triggering works.
	name: no-std
	permissions:
	contents: read
	on:
	push:
	branches: [ main, release/* ]
	pull_request:
	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true
	env:
	CARGO_TERM_COLOR: always
	jobs:
	nostd:
	runs-on: ubuntu-latest
	name: ${{ matrix.target }}
	strategy:
	matrix:
	target: [ wasm32-unknown-unknown ]
	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true

	- name: Install rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	toolchain: stable
	rustflags: ""

	- name: Add rust targets ${{ matrix.target }}
	run: rustup target add ${{ matrix.target }}

	- name: Cargo check
	run: cargo check --release --target ${{ matrix.target }} --no-default-features

Provide feedback