Add head_generated_message_test_srcjars and head_generated_message_test_binjars for checked-in tests using checked-in jars. WKT jars are not included to prevent ODR violations interfering with feature resolution

java/core/BUILD.bazel

diff --git a/java/core/BUILD.bazel b/java/core/BUILD.bazel
index 820fb70..e43bf49 100644
--- a/java/core/BUILD.bazel
+++ b/java/core/BUILD.bazel
@@ -436,6 +436,64 @@
     ],
 )
 
+java_library(
+    name = "25.0_gencode",
+    srcs = [
+        "v25.0_gencode/src_jars/generic_test_protos-speed-src.srcjar",
+        "v25.0_gencode/src_jars/java_test_protos-speed-src.srcjar",
+        "v25.0_gencode/src_jars/lite_test_protos-speed-src.srcjar",
+        # Don't include WKT from 25.x, due to bin incompatibility
+        #"v25.0_gencode/src_jars/any_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/api_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/descriptor_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/duration_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/empty_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/field_mask_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/source_context_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/struct_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/timestamp_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/type_proto-speed-src.srcjar",
+        # "v25.0_gencode/src_jars/wrappers_proto-speed-src.srcjar",
+    ],
+    deps = ["//java/core:core"],
+)
+
+junit_tests(
+    name = "head_generated_message_test_srcjars",
+    size = "small",
+    srcs = [
+        "src/test/java/com/google/protobuf/GeneratedMessageTest.java",
+    ],
+    data = ["//src/google/protobuf:testdata"],
+    deps = [
+        "@com_google_protobuf_head//java/core:core",
+        ":25.0_gencode",
+        ":test_util",
+        "@maven//:com_google_guava_guava",
+        "@maven//:com_google_truth_truth",
+        "@maven//:junit_junit",
+        "@maven//:org_mockito_mockito_core",
+    ],
+)
+
+junit_tests(
+    name = "head_generated_message_test_binjars",
+    size = "small",
+    srcs = [
+        "src/test/java/com/google/protobuf/GeneratedMessageTest.java",
+    ],
+    data = ["//src/google/protobuf:testdata"],
+    deps = [
+        "@com_google_protobuf_head//java/core:core",
+        ":lib25.0_gencode.jar",
+        ":test_util",
+        "@maven//:com_google_guava_guava",
+        "@maven//:com_google_truth_truth",
+        "@maven//:junit_junit",
+        "@maven//:org_mockito_mockito_core",
+    ],
+)
+
 # The UTF-8 validation tests are much slower than the other tests, so they get
 # their own test target with a longer timeout.
 junit_tests(