Fix jq filter syntax: remove non-existent bash::code, use string arrays with add

Co-authored-by: phlax <454682+phlax@users.noreply.github.com>

Author: Copilot

gh-actions/bson/tests/basic.test.yml

@@ -7,7 +7,6 @@ with:
   input-format: yaml
   filter: |
     "echo \(.message)"
-    | bash::code
 
 after:
 - shell: bash

gh-actions/test-runner/action.yml

@@ -52,19 +52,33 @@ runs:
       filter: |
         . as $config
         | ($config.with // {} | to_entries | map("    \(.key): \(.value | tojson)") | join("\n")) as $inputs
-        | "mkdir -p .tmp.test-action\n" +
-          "cat > .tmp.test-action/action.yml << 'EOFACTION'\n" +
-          "runs:\n" +
-          "  using: composite\n" +
-          "  steps:\n" +
-          "  - uses: \($config.using)\n" +
-          "    id: test-action\n" +
-          (if ($inputs | length) > 0 then "    with:\n\($inputs)\n" else "" end) +
-          "outputs:\n" +
-          "  outputs:\n" +
-          "    value: ${{ toJSON(steps.test-action.outputs) }}\n" +
-          "EOFACTION\n"
-        | bash::code
+        | if ($inputs | length) > 0 then
+            ("mkdir -p .tmp.test-action\n",
+             "cat > .tmp.test-action/action.yml << 'EOFACTION'\n",
+             "runs:\n",
+             "  using: composite\n",
+             "  steps:\n",
+             "  - uses: \($config.using)\n",
+             "    id: test-action\n",
+             "    with:\n",
+             "\($inputs)\n",
+             "outputs:\n",
+             "  outputs:\n",
+             "    value: ${{ toJSON(steps.test-action.outputs) }}\n",
+             "EOFACTION\n") | add
+          else
+            ("mkdir -p .tmp.test-action\n",
+             "cat > .tmp.test-action/action.yml << 'EOFACTION'\n",
+             "runs:\n",
+             "  using: composite\n",
+             "  steps:\n",
+             "  - uses: \($config.using)\n",
+             "    id: test-action\n",
+             "outputs:\n",
+             "  outputs:\n",
+             "    value: ${{ toJSON(steps.test-action.outputs) }}\n",
+             "EOFACTION\n") | add
+          end
 
   # Run the action under test
   - uses: ./.tmp.test-action
@@ -109,15 +123,15 @@ runs:
         .expected as $expected
         | .actual as $actual
         | if $expected == $actual then
-            "echo 'result=pass' >> $GITHUB_OUTPUT\necho '✓ Test passed: outputs match expected values'"
+            ("echo 'result=pass' >> $GITHUB_OUTPUT\n",
+             "echo '✓ Test passed: outputs match expected values'\n") | add
           else
-            "echo 'result=fail' >> $GITHUB_OUTPUT\n" +
-            "echo '✗ Test failed: outputs do not match'\n" +
-            "echo 'Expected: \($expected | @json)'\n" +
-            "echo 'Actual: \($actual | @json)'\n" +
-            "exit 1"
+            ("echo 'result=fail' >> $GITHUB_OUTPUT\n",
+             "echo '✗ Test failed: outputs do not match'\n",
+             "echo 'Expected: \($expected | @json)'\n",
+             "echo 'Actual: \($actual | @json)'\n",
+             "exit 1\n") | add
           end
-        | bash::code
 
   # Set final result
   - shell: bash

gh-actions/test-runner/tests/gh-mock-example.test.yml

@@ -23,7 +23,6 @@ with:
     which gh
     gh api test-endpoint
     "
-    | bash::code
 
 after:
 - shell: bash