[ObjC] Test pddm expansion

Testing both the support and the sources expanded.

PiperOrigin-RevId: 508471876

objectivec/BUILD.bazel

@@ -121,6 +121,34 @@ sh_test(
     ],
 )
 
+# -------------------------------------------------------------------
+# Validation of pddm expansion.
+
+py_binary(
+    name = "pddm",
+    srcs = ["DevTools/pddm.py"],
+)
+
+py_test(
+    name = "pddm_tests",
+    size = "small",
+    srcs = [
+        "DevTools/pddm.py",
+        "DevTools/pddm_tests.py",
+    ],
+)
+
+sh_test(
+    name = "sources_pddm_expansion_test",
+    size = "small",
+    srcs = ["DevTools/sources_pddm_expansion_test.sh"],
+    data = [":pddm"] + glob([
+        "**/*.h",
+        "**/*.m",
+        "**/*.pddm",
+    ]),
+)
+
 ################################################################################
 # Distribution files
 ################################################################################

objectivec/DevTools/sources_pddm_expansion_test.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+${TEST_SRCDIR}/google3/third_party/protobuf/objectivec/pddm \
+  --dry-run \
+  ${TEST_SRCDIR}/google3/third_party/protobuf/objectivec/*.[hm] \
+  ${TEST_SRCDIR}/google3/third_party/protobuf/objectivec/Tests/*.[hm] \
+  || die "Update by running: objectivec/DevTools/pddm.py objectivec/*.[hm] objectivec/Tests/*.[hm]"
+
+echo "PASS"