Fix packets e2e test in CI (#2987)

.github/workflows/advance-zed.yml

@@ -43,7 +43,11 @@ jobs:
       - run: yarn build
       - name: End to end tests
         id: playwright
-        run: /usr/bin/xvfb-run --auto-servernum -s "-screen 0 1280x1024x24" yarn e2e:ci
+        run: |
+          # Mock for pcap slice opening to avoid hanging Actions Runner.
+          # See https://github.com/brimdata/zui/pull/2987
+          echo "application/vnd.tcpdump.pcap; /usr/bin/true" >> /home/runner/.mailcap
+          /usr/bin/xvfb-run --auto-servernum -s "-screen 0 1280x1024x24" yarn e2e:ci
 
       - run: git -c user.name='Brim Automation' -c [email protected] commit -a -m 'upgrade Zed to ${{ env.zed_ref }}'
 

.github/workflows/e2e.yml

@@ -56,6 +56,9 @@ jobs:
         id: playwright
         run: |
           if [ "$RUNNER_OS" = "Linux" ]; then
+            # Mock for pcap slice opening to avoid hanging Actions Runner.
+            # See https://github.com/brimdata/zui/pull/2987
+            echo "application/vnd.tcpdump.pcap; /usr/bin/true" >> /home/runner/.mailcap
             /usr/bin/xvfb-run --auto-servernum -s "-screen 0 1280x1024x24" ${{ inputs.run-target }}
           else
             ${{ inputs.run-target }}

packages/zui-player/ci.config.js

@@ -3,5 +3,5 @@ const baseConfig = require('./playwright.config');
 module.exports = {
   ...baseConfig,
   /* This is the list of flaky tests to ignore when running on CI */
-  testIgnore: /(pool-loads|pool-groups|title-bar-buttons|packets).spec/,
+  testIgnore: /(pool-loads|pool-groups).spec/,
 };