Add a test for the @rules_java release notes generator

PiperOrigin-RevId: 740752942
Change-Id: I01455d2ef20f027f4c253324eda650694c9254f6

Author: hvadehra

.bazelci/presubmit.yml

@@ -22,8 +22,6 @@ build_targets_integration: &build_targets_integration
 test_targets: &test_targets
   - "//test/..."
   - "//java/test/..."
-  # linux-only tests
-  - "-//test:check_remote_jdk_configs_test"
   # TODO: re-enable docs after moving them out of https://bazel.build/reference/be/java
   - "-//test:docs_up_to_date_test"
 
@@ -108,5 +106,10 @@ tasks:
     name: "Extra tests w/ Bazel {bazel}"
     bazel: ${{ bazel }}
     platform: "ubuntu2004"
+    shell_commands:
+      - "git config user.name 'fake-user-for-testing'"
+      - "git tag -a 'fake-tag-for-testing' -m 'ignore'"
+      - "git commit --allow-empty -m 'Fake commit message for testing'"
     test_targets:
       - "//test:check_remote_jdk_configs_test"
+      - "//test:check_release_notes_test"

distro/relnotes.bzl

@@ -48,4 +48,5 @@ EOF
               """.format(ARCHIVE = archive, VERSION = version),
         srcs = [archive],
         tags = ["local", "manual"],
+        visibility = ["//test:__pkg__"],
     )

test/BUILD.bazel

@@ -31,6 +31,7 @@ sh_test(
         for configs in REMOTE_JDK_CONFIGS.values()
         for config in configs
     ],
+    tags = ["manual"],  # explicitly tested only on Linux
 )
 
 sh_test(
@@ -47,6 +48,17 @@ sh_test(
     ],
 )
 
+sh_test(
+    name = "check_release_notes_test",
+    srcs = ["check_release_notes_test.sh"],
+    args = [
+        "$(location //distro:relnotes.txt)",
+        module_version(),
+    ],
+    data = ["//distro:relnotes.txt"],
+    tags = ["manual"],  # explicitly tested only on Linux
+)
+
 diff_test(
     name = "docs_up_to_date_test",
     failure_message = """

test/check_release_notes_test.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+# Copyright 2025 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+RELNOTES_FILE=$1
+VERSION=$2
+
+function fail() {
+  echo "ERROR: ${1}"
+  echo "Release notes content:"
+  echo "--------------------------------------"
+  cat ${RELNOTES_FILE}
+  echo "--------------------------------------"
+  exit 1
+}
+
+echo "Checking generated release notes: ${RELNOTES_FILE}"
+
+grep -q '**Changes since fake-tag-for-tests**' ${RELNOTES_FILE} || fail "No changelog header"
+grep -q 'Fake commit message for testing' ${RELNOTES_FILE} || fail "No changelog commit"
+grep -q '**MODULE.bazel setup**' ${RELNOTES_FILE} || fail "No bzlmod setup header"
+grep -q "bazel_dep(name = \"rules_java\", version = \"${VERSION}\")" ${RELNOTES_FILE} || fail "No bzlmod dep stanza"
+grep -q '**WORKSPACE setup**' ${RELNOTES_FILE} || fail "No WORKSPACE setup header"
+grep -q '**Using the rules**' ${RELNOTES_FILE} || fail "No using the rules header"