Add proper example and tests #13287

Job	Run time
cargo-deny aarch64-apple-darwin	41s
Check wasm32 + wasm-bindgen	3m 18s
cargo-deny aarch64-linux-android	41s
cargo-deny i686-pc-windows-gnu	38s
cargo-deny i686-pc-windows-msvc	46s
Check wasm32+atomics	1m 32s
cargo-deny i686-unknown-linux-gnu	39s
android	25s
cargo-deny wasm32-unknown-unknown	39s
cargo-deny x86_64-apple-darwin	40s
cargo-deny x86_64-pc-windows-gnu	43s
Format + check + test	43s
cargo-deny x86_64-pc-windows-msvc	41s
cargo-deny x86_64-unknown-linux-gnu	39s
ios	24s
cargo-deny x86_64-unknown-linux-musl	42s
cargo-deny x86_64-unknown-redox	45s
Run tests	1m 43s
Check Windows	1m 59s
	18m 18s

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