1 files changed, 61 insertions, 0 deletions
diff --git a/support/src/android/support/test/internal/runner/InstrumentationArgumentsRegistry.java b/support/src/android/support/test/internal/runner/InstrumentationArgumentsRegistry.java
new file mode 100644
index 0000000..b8bf8fb
--- /dev/null
+++ b/support/src/android/support/test/internal/runner/InstrumentationArgumentsRegistry.java
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2014 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 android.support.test.internal.runner;
+
+import android.os.Bundle;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * An exposed registry instance to make it easy for callers to find the instrumentation arguments.
+ */
+public final class InstrumentationArgumentsRegistry {
+
+    private static final AtomicReference<Bundle> sArguments = new AtomicReference<Bundle>(null);
+
+    /**
+     * Returns a copy of instrumentation arguments Bundle.
+     * <p>
+     * This Bundle is not guaranteed to be present under all instrumentations.
+     * </p>
+     *
+     * @return Bundle the arguments for this instrumentation.
+     * @throws IllegalStateException if no argument Bundle has been registered.
+     */
+    public static Bundle getInstance() {
+        Bundle instance = sArguments.get();
+        if (null == instance) {
+            throw new IllegalStateException("No instrumentation arguments registered! "
+                    + "Are you running under an Instrumentation which registers arguments?");
+        }
+        return new Bundle(instance);
+    }
+
+    /**
+     * Stores a copy of the instrumentation arguments Bundle in the registry.
+     * <p>
+     * This is a global registry - so be aware of the impact of calling this method!
+     * </p>
+     * 
+     * @param arguments the arguments for this application. Null deregisters any existing arguments.
+     */
+    public static void registerInstance(Bundle arguments) {
+        InstrumentationArgumentsRegistry.sArguments.set(new Bundle(arguments));
+    }
+
+    private InstrumentationArgumentsRegistry() { }
+}