Add jni_libs property to java tests

Add jni_libs property to java tests and treat it as test data that
should be copied to the lib or lib64 directory in the test directory.

Fixes: 176593487
Test: java_test.go
Change-Id: I3a118b933ab30dcd731c6dc2708da9bc63ab5520

java/java_test.go

@@ -499,6 +499,32 @@ func TestBinary(t *testing.T) {
 	}
 }
 
+func TestTest(t *testing.T) {
+	ctx, _ := testJava(t, `
+		java_test_host {
+			name: "foo",
+			srcs: ["a.java"],
+			jni_libs: ["libjni"],
+		}
+
+		cc_library_shared {
+			name: "libjni",
+			host_supported: true,
+			device_supported: false,
+			stl: "none",
+		}
+	`)
+
+	buildOS := android.BuildOs.String()
+
+	foo := ctx.ModuleForTests("foo", buildOS+"_common").Module().(*TestHost)
+
+	fooTestData := foo.data
+	if len(fooTestData) != 1 || fooTestData[0].Rel() != "lib64/libjni.so" {
+		t.Errorf(`expected foo test data relative path ["lib64/libjni.so"], got %q`, fooTestData.Strings())
+	}
+}
+
 func TestHostBinaryNoJavaDebugInfoOverride(t *testing.T) {
 	bp := `
 		java_library {