Fix: Support JVM version string from old (< v8.9) and new (>= v8.9) gradle version (#683)

* fix(validator): support version string from old and newest gradle

* fix(test): fix unit test

* test: add more version and runtime to the test

* refactor(validator): use full label instead

* fix(validator): use in operator to check JVM substring

---------

Co-authored-by: Mehmet Nuri Deveci <5735811+mndeveci@users.noreply.github.com>

Author: jeffryang24

aws_lambda_builders/workflows/java_gradle/gradle_validator.py

@@ -83,5 +83,5 @@ def _get_jvm_string(self, gradle_path):
 
         for line in stdout.splitlines():
             l_dec = decode(line)
-            if l_dec.startswith("JVM"):
+            if "JVM" in l_dec:
                 return l_dec

tests/unit/workflows/java_gradle/test_gradle_validator.py

@@ -78,6 +78,40 @@ def test_emits_warning_when_version_string_not_found(self):
         validator.validate(runtime_path=self.runtime_path)
         self.mock_log.warning.assert_called_with(GradleValidator.VERSION_STRING_WARNING, self.runtime_path)
 
+    @parameterized.expand(
+        [
+            ("1.8.0", "java8"),
+            ("11.0.0", "java11"),
+            ("17.0.0", "java17"),
+            ("21.0.0", "java21"),
+        ]
+    )
+    def test_does_not_emit_warning_for_version_string_in_gradle_lt_8_9(self, version, runtime):
+        version_string = f"JVM:          {version}".encode()
+        self.mock_os_utils.popen.side_effect = [FakePopen(stdout=version_string, returncode=0)]
+        validator = GradleValidator(
+            runtime=runtime, architecture=self.architecture, os_utils=self.mock_os_utils, log=self.mock_log
+        )
+        validator.validate(runtime_path=self.runtime_path)
+        self.mock_log.warning.assert_not_called()
+
+    @parameterized.expand(
+        [
+            ("1.8.0", "java8"),
+            ("11.0.0", "java11"),
+            ("17.0.0", "java17"),
+            ("21.0.0", "java21"),
+        ]
+    )
+    def test_does_not_emit_warning_for_version_string_in_gradle_ge_8_9(self, version, runtime):
+        version_string = f"Launcher JVM:          {version}".encode()
+        self.mock_os_utils.popen.side_effect = [FakePopen(stdout=version_string, returncode=0)]
+        validator = GradleValidator(
+            runtime=runtime, architecture=self.architecture, os_utils=self.mock_os_utils, log=self.mock_log
+        )
+        validator.validate(runtime_path=self.runtime_path)
+        self.mock_log.warning.assert_not_called()
+
     @parameterized.expand(
         [
             ("11.0.0", "java11"),