Test that JSPI works in chrome browser tests. (#19026)

Author: brendandahl

.circleci/config.yml

@@ -329,7 +329,7 @@ commands:
             # this flag for now: https://crbug.com/638180
             CHROME_FLAGS_BASE: "--no-first-run -start-maximized --no-sandbox --use-gl=swiftshader --user-data-dir=/tmp/chrome-emscripten-profile --enable-experimental-web-platform-features"
             CHROME_FLAGS_HEADLESS: "--headless --remote-debugging-port=1234"
-            CHROME_FLAGS_WASM: "--enable-experimental-webassembly-features --js-flags=\"--experimental-wasm-memory64\""
+            CHROME_FLAGS_WASM: "--enable-experimental-webassembly-features --js-flags=\"--experimental-wasm-memory64 --experimental-wasm-stack-switching --experimental-wasm-type-reflection\""
             CHROME_FLAGS_NOCACHE: "--disk-cache-dir=/dev/null --disk-cache-size=1 --media-cache-size=1 --disable-application-cache --incognito"
           command: |
             export EMTEST_BROWSER="/usr/bin/google-chrome $CHROME_FLAGS_BASE $CHROME_FLAGS_HEADLESS $CHROME_FLAGS_WASM $CHROME_FLAGS_NOCACHE"

test/test_browser.py

@@ -149,6 +149,10 @@ def no_firefox(note='firefox is not supported'):
   return lambda f: f
 
 
+def is_jspi(args):
+  return '-sASYNCIFY=2' in args
+
+
 def no_swiftshader(f):
   assert callable(f)
 
@@ -3320,10 +3324,17 @@ def test_cocos2d_hello(self):
                      '-Wno-inconsistent-missing-override',
                      '-Wno-deprecated-declarations'])
 
-  def test_async(self):
+  @parameterized({
+    'asyncify': (['-sASYNCIFY=1'],),
+    'jspi': (['-sASYNCIFY=2', '-Wno-experimental'],),
+  })
+  def test_async(self, args):
+    if is_jspi(args) and not is_chrome():
+      self.skipTest('only chrome supports jspi')
+
     for opts in [0, 1, 2, 3]:
       print(opts)
-      self.btest_exit('browser/async.cpp', args=['-O' + str(opts), '-g2', '-sASYNCIFY'])
+      self.btest_exit('browser/async.cpp', args=['-O' + str(opts), '-g2'] + args)
 
   def test_asyncify_tricky_function_sig(self):
     self.btest('browser/test_asyncify_tricky_function_sig.cpp', '85', args=['-sASYNCIFY_ONLY=[foo(char.const*?.int#),foo2(),main,__original_main]', '-sASYNCIFY'])