diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index 40e04e32..6b25244e 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -61,6 +61,14 @@ jobs:
           echo "git_commit: $GIT_COMMIT"
           echo "cpython_release: $CPYTHON_RELEASE"
 
+          {
+            echo "| Variable        | Value                |"
+            echo "| --------------- | -------------------- |"
+            echo "| git_remote      | \`$GIT_REMOTE\`      |"
+            echo "| git_commit      | \`$GIT_COMMIT\`      |"
+            echo "| cpython_release | \`$CPYTHON_RELEASE\` |"
+          } >> "$GITHUB_STEP_SUMMARY"
+
       - name: "Checkout python/release-tools"
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
@@ -89,7 +97,20 @@ jobs:
       - name: "Select jobs"
         id: select-jobs
         run: |
-          ./select_jobs.py "$CPYTHON_RELEASE" | tee -a "$GITHUB_OUTPUT"
+          test_flag=""
+          if [[ "${{ github.event_name }}" != "workflow_dispatch" ]]; then
+            test_flag="--test"
+          fi
+          output=$(./select_jobs.py $test_flag "$CPYTHON_RELEASE")
+          echo "$output" | tee -a "$GITHUB_OUTPUT"
+
+          {
+            echo "| Job     | Enabled |"
+            echo "| ------- | ------- |"
+            echo "$output" | while IFS='=' read -r key value; do
+              echo "| $key | $value |"
+            done
+          } >> "$GITHUB_STEP_SUMMARY"
 
   build-source:
     runs-on: ubuntu-24.04
diff --git a/select_jobs.py b/select_jobs.py
index db2130b7..255b95e0 100755
--- a/select_jobs.py
+++ b/select_jobs.py
@@ -12,9 +12,22 @@ def output(key: str, value: bool) -> None:
 def main() -> None:
     parser = argparse.ArgumentParser()
     parser.add_argument("version", type=Tag)
+    parser.add_argument(
+        "--test",
+        action="store_true",
+        help="Enable all jobs for testing",
+    )
     args = parser.parse_args()
     version = args.version
 
+    if args.test:
+        # When testing the workflow itself (push/PR),
+        # enable all jobs for full coverage.
+        output("docs", True)
+        output("android", True)
+        output("ios", True)
+        return
+
     # Docs are only built for stable releases or release candidates.
     output("docs", version.level in ["rc", "f"])
 
diff --git a/tests/test_select_jobs.py b/tests/test_select_jobs.py
index 7b3148bc..670d630b 100644
--- a/tests/test_select_jobs.py
+++ b/tests/test_select_jobs.py
@@ -38,3 +38,28 @@ def test_select_jobs(
             ios={ios}
         """
     )
+
+
+@pytest.mark.parametrize(
+    "version",
+    [
+        "3.13.0a1",
+        "3.13.0",
+        "3.14.0b2",
+        "3.15.0a1",
+    ],
+)
+def test_select_jobs_test_mode(
+    version: str,
+    monkeypatch: pytest.MonkeyPatch,
+    capsys: pytest.CaptureFixture[str],
+) -> None:
+    monkeypatch.setattr(sys, "argv", ["select_jobs.py", "--test", version])
+    select_jobs.main()
+    assert capsys.readouterr().out == dedent(
+        """\
+            docs=true
+            android=true
+            ios=true
+        """
+    )