Add systemserverclasspath_fragments property to apex.

- All contents of the fragment are added as java_lib dependencies.
- Generated classpaths.proto is added into etc as required.

Bug: 180105615
Test: m nothing
Change-Id: I8e8e8b019c4ca2909182f205a47deffa946de6da

apex/systemserver_classpath_fragment_test.go

@@ -0,0 +1,78 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package apex
+
+import (
+	"testing"
+
+	"android/soong/android"
+	"android/soong/java"
+)
+
+var prepareForTestWithSystemserverclasspathFragment = android.GroupFixturePreparers(
+	java.PrepareForTestWithDexpreopt,
+	PrepareForTestWithApexBuildComponents,
+)
+
+func TestSystemserverclasspathFragmentContents(t *testing.T) {
+	result := android.GroupFixturePreparers(
+		prepareForTestWithSystemserverclasspathFragment,
+		prepareForTestWithMyapex,
+	).RunTestWithBp(t, `
+		apex {
+			name: "myapex",
+			key: "myapex.key",
+			systemserverclasspath_fragments: [
+				"mysystemserverclasspathfragment",
+			],
+			updatable: false,
+		}
+
+		apex_key {
+			name: "myapex.key",
+			public_key: "testkey.avbpubkey",
+			private_key: "testkey.pem",
+		}
+
+		java_library {
+			name: "foo",
+			srcs: ["b.java"],
+			installable: true,
+			apex_available: [
+				"myapex",
+			],
+		}
+
+		systemserverclasspath_fragment {
+			name: "mysystemserverclasspathfragment",
+			contents: [
+				"foo",
+			],
+			apex_available: [
+				"myapex",
+			],
+		}
+	`)
+
+	ensureExactContents(t, result.TestContext, "myapex", "android_common_myapex_image", []string{
+		"etc/classpaths/mysystemserverclasspathfragment.pb",
+		"javalib/foo.jar",
+	})
+
+	java.CheckModuleDependencies(t, result.TestContext, "myapex", "android_common_myapex_image", []string{
+		`myapex.key`,
+		`mysystemserverclasspathfragment`,
+	})
+}