feat: Attempt to slow down OS X tests.

Author: BenHenning

.github/workflows/test.yml

@@ -21,7 +21,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        include:
+          - os: ubuntu-latest
+            BLOCKLY_WDIO_PAUSE_TIME_MS: donotoverride
+          - os: macos-latest
+            BLOCKLY_WDIO_PAUSE_TIME_MS: 100
 
     steps:
       - name: Checkout experimentation plugin
@@ -64,6 +68,8 @@ jobs:
         run: |
           cd main
           npm run test:ci
+        env:
+          BLOCKLY_WDIO_PAUSE_TIME_MS: ${{ matrix.BLOCKLY_WDIO_PAUSE_TIME_MS }}
 
   webdriverio_tests:
     name: WebdriverIO tests (against pinned v12)

test/webdriverio/test/test_setup.ts

@@ -42,7 +42,7 @@ let driver: webdriverio.Browser | null = null;
  * the browser.wait* functions if you need your test to wait for
  * something to happen after sending input.
  */
-export const PAUSE_TIME = 0;
+export const PAUSE_TIME = fetchEnvironmentPauseTime() ?? 0;
 
 /**
  * Start up WebdriverIO and load the test page. This should only be
@@ -93,6 +93,20 @@ export async function driverSetup(
   return driver;
 }
 
+/**
+ * Fetches the environmentally configured pause time for tests.
+ *
+ * @return The paues time, in milliseconds, for tests or null if one isn't
+ *     correctly configured.
+ */
+function fetchEnvironmentPauseTime(): number | null {
+  const envPauseTimeMsStr = process.env.BLOCKLY_WDIO_PAUSE_TIME_MS;
+  if (!envPauseTimeMsStr) return null;
+  const envPauseTimeMs = parseInt(envPauseTimeMsStr);
+  if (isNaN(envPauseTimeMs)) return null;
+  return envPauseTimeMs;
+}
+
 /**
  * End the WebdriverIO session.
  *