Debug Wasm tests in the browser!

You can step through the generated code instruction-by-instruction, and examine memory contents

Steps

• In gen_wasm/src/lib.rs, set DEBUG_LOG_SETTINGS.keep_test_binary = true
• Run cargo test-gen-wasm my_test_function_name
• Look for the path written to the console for final.wasm and select it in the file picker below
• Open the browser DevTools
  Control+Shift+I or Command+Option+I or F12
• If your test is from gen_refcount.rs
• The debugger should pause just before entering the first Wasm call. Step into a couple of Wasm calls until you reach your test code in $main
• Chrome DevTools has a handy Memory Inspector panel. In the debugger, find Module -> memories -> $memory. Right click and select "Reveal in Memory Inspector"