Allow Soong to autogenerate test configs

Move the configuration for autogenerating test configs into Soong,
and add LOCAL_FULL_TEST_CONFIG so that Soong can specify the full
path to a generated test config.

Also add a java junit test config template.

Bug: 70770641
Test: m checkbuild
Test: atest CtsUiRenderingTestCases
Test: atest junit-params-test
Change-Id: I2e64bc33c949ab7b342be518f94a81a186fe9c07
diff --git a/core/base_rules.mk b/core/base_rules.mk
index db09670..31e8bad 100644
--- a/core/base_rules.mk
+++ b/core/base_rules.mk
@@ -583,10 +583,12 @@
       $(eval n := $(or $(word 2,$(p)),$(notdir $(word 1, $(p))))) \
       $(foreach dir, $(call compatibility_suite_dirs,$(suite)), \
         $(s):$(dir)/$(n)))))
-  ifeq (,$(LOCAL_TEST_CONFIG))
-    test_config := $(wildcard $(LOCAL_PATH)/AndroidTest.xml)
-  else
+  ifneq (,$(LOCAL_FULL_TEST_CONFIG))
+    test_config := $(LOCAL_FULL_TEST_CONFIG)
+  else ifneq (,$(LOCAL_TEST_CONFIG))
     test_config := $(LOCAL_PATH)/$(LOCAL_TEST_CONFIG)
+  else
+    test_config := $(wildcard $(LOCAL_PATH)/AndroidTest.xml)
   endif
   ifeq (,$(test_config))
     ifneq (true,$(is_native))
@@ -639,6 +641,19 @@
   endif
 endif # $(my_prefix)$(LOCAL_MODULE_CLASS)_$(LOCAL_MODULE)_compat_files
 
+# HACK: pretend a soong LOCAL_FULL_TEST_CONFIG is autogenerated by copying it to
+# the location autogenerated test configs use and setting the flag in
+# module-info.json
+ifdef LOCAL_FULL_TEST_CONFIG
+  ifeq ($(LOCAL_MODULE_MAKEFILE),$(SOONG_ANDROID_MK))
+    my_test_config_file := $(dir $(LOCAL_BUILT_MODULE))$(LOCAL_MODULE).config
+    $(eval $(call copy-one-file,$(LOCAL_FULL_TEST_CONFIG),$(my_test_config_file)))
+    $(call add-dependency,$(LOCAL_BUILT_MODULE),$(my_test_config_file))
+    ALL_MODULES.$(my_register_name).auto_test_config := true
+    my_test_config_file :=
+  endif
+endif
+
 ifneq ($(my_test_data_file_pairs),)
 $(foreach pair, $(my_test_data_file_pairs), \
   $(eval parts := $(subst :,$(space),$(pair))) \