Expose resources in Robolectric/JUnit tests.

build/config/android/rules.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Do not add any imports to non-//build directories here.
 # Some projects (e.g. V8) do not have non-build directories DEPS'ed in.
 import("//build/config/android/config.gni")
 import("//build/config/android/internal_rules.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/dcheck_always_on.gni")
@@ skipping 871 matching lines @@
   #    grd_file = "foo_strings.grd"
   #  }
   template("java_strings_grd") {
     set_sources_assignment_filter([])
     forward_variables_from(invoker, [ "testonly" ])
 
     base_path = "$target_gen_dir/$target_name"
     resources_zip = base_path + ".resources.zip"
     build_config = base_path + ".build_config"
 
-    write_build_config("${target_name}__build_config") {
-      type = "android_resources"
-    }
-
     # Put grit files into this subdirectory of target_gen_dir.
     extra_output_path = target_name + "_grit_output"
 
     grit_target_name = "${target_name}__grit"
     grit_output_dir = "$target_gen_dir/$extra_output_path"
+
+    write_build_config("${target_name}__build_config") {

[agrieve, 2017/04/11 00:25:03]

The main reason we use .zip files rather than directories is for when outputs
are removed or renamed.

E.g. if at one point this produced:
$grit_output_dir/res/values/foo.xml

then someone changes it so that it produces:
$grit_output_dir/res/values/bar.xml

Then grit_output_dir will look like:
$grit_output_dir/res/values/foo.xml
$grit_output_dir/res/values/bar.xml

Until a clobber build is performed.

So... I think this is probably better left as a .zip. Most resource commands
don't even leave their pre-zipped outputs around (and this one arguably
shouldn't either)

[mikecase (-- gone --), 2017/04/11 18:04:31]

ahhh, I see, fixed to use zipfiles.

+      type = "android_resources"
+      resource_dirs = [ grit_output_dir ]
+    }
+
     grit(grit_target_name) {
       forward_variables_from(invoker, [ "deps" ])
       grit_flags = [
         "-E",
         "ANDROID_JAVA_TAGGED_ONLY=false",
       ]
       output_dir = grit_output_dir
       resource_ids = ""
       source = invoker.grd_file
       outputs = invoker.outputs
@@ skipping 43 matching lines @@
     base_path = "$target_gen_dir/$target_name"
     resources_zip = base_path + ".resources.zip"
     build_config = base_path + ".build_config"
 
     build_config_target_name = "${target_name}__build_config"
     zip_target_name = "${target_name}__zip"
     final_target_name = target_name
 
     write_build_config(build_config_target_name) {
       type = "android_resources"
+      resource_dirs = [ invoker.grit_output_dir ]
     }
 
     zip(zip_target_name) {
       visibility = [ ":$final_target_name" ]
 
       base_dir = invoker.grit_output_dir
       inputs = rebase_path(invoker.generated_files, ".", base_dir)
       output = resources_zip
       deps = [
         ":$build_config_target_name",
@@ skipping 77 matching lines @@
   #     java_files = [ "org/chromium/foo/FooTest.java" ]
   #     deps = [ ":bar_java" ]
   #   }
   template("junit_binary") {
     set_sources_assignment_filter([])
     testonly = true
 
     _java_binary_target_name = "${target_name}__java_binary"
     _test_runner_target_name = "${target_name}__test_runner_script"
 
+    _build_config = "$target_gen_dir/$target_name.build_config"
+    _build_config_target_name = "${target_name}__build_config"
+
+    write_build_config(_build_config_target_name) {
+      type = "junit_binary"
+      build_config = _build_config
+      if (defined(invoker.deps)) {
+        possible_config_deps = invoker.deps
+      }
+    }
+
     test_runner_script(_test_runner_target_name) {
       test_name = invoker.target_name
       test_suite = invoker.target_name
       test_type = "junit"
       ignore_all_data_deps = true
+      forward_variables_from(invoker,
+                             [
+                               "android_manifest_path",
+                               "package_name",
+                             ])
     }
 
     java_binary(_java_binary_target_name) {
       deps = []
       output_name = invoker.target_name
       forward_variables_from(invoker, "*")
       testonly = true
       bypass_platform_checks = true
       main_class = "org.chromium.testing.local.JunitTestMain"
       wrapper_script_name = "helper/$target_name"
       deps += [
         "//testing/android/junit:junit_test_support",
         "//third_party/junit",
         "//third_party/mockito:mockito_java",
         "//third_party/robolectric:robolectric_all_java",
       ]
     }
     group(target_name) {
       public_deps = [
+        ":$_build_config_target_name",
         ":$_java_binary_target_name",
         ":$_test_runner_target_name",
       ]
     }
   }
 
   # Declare a java library target
   #
   # Variables
   #   deps: Specifies the dependencies of this target. Java targets in this list
@@ skipping 1798 matching lines @@
         # because in practice they seem to contain classes required to be in the
         # classpath.
         deps += _subjar_targets
       }
       if (defined(_res_target_name)) {
         deps += [ ":$_res_target_name" ]
       }
     }
   }
 }