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 --nocapture
• 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
• Click one of the buttons below, depending on what kind of test it is.
  Only one of them will work. The other will probably crash or something.
• 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 $#UserApp_main_1
• Chrome DevTools now has a Memory Inspector panel! In the debugger, find Module -> memories -> $memory. Right click and select "Reveal in Memory Inspector"