Cronet smoke tests

components/cronet/android/test/smoketests/src/org/chromium/net/smoke/MissingNativeLibraryTest.java

Index: components/cronet/android/test/smoketests/src/org/chromium/net/smoke/MissingNativeLibraryTest.java
diff --git a/components/cronet/android/test/smoketests/src/org/chromium/net/smoke/MissingNativeLibraryTest.java b/components/cronet/android/test/smoketests/src/org/chromium/net/smoke/MissingNativeLibraryTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..23803b7ef28dbd349c94d39f4469c74ea0ab3ec7
--- /dev/null
+++ b/components/cronet/android/test/smoketests/src/org/chromium/net/smoke/MissingNativeLibraryTest.java
@@ -0,0 +1,48 @@
+// Copyright 2016 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.
+
+package org.chromium.net.smoke;
+
+import android.support.test.filters.SmallTest;
+
+import org.chromium.net.CronetEngine;
+import org.chromium.net.ExperimentalCronetEngine;
+
+/**
+ *  Tests scenarios when the native shared library file is missing in the APK or was built for a
+ *  wrong architecture.
+ */
+public class MissingNativeLibraryTest extends CronetSmokeTestCase {
+    /**
+     * If the ".so" file is missing, instantiating the Cronet engine should throw an exception.
+     */
+    @SmallTest
+    public void testExceptionWhenSoFileIsAbsent() throws Exception {
+        ExperimentalCronetEngine.Builder builder =
+                new ExperimentalCronetEngine.Builder(getContext());
+        try {
+            builder.build();
+            fail("Expected exception since the shared library '.so' file is absent");
+        } catch (Throwable t) {
+            // Find the root cause.
+            while (t.getCause() != null) {
+                t = t.getCause();
+            }
+            assertEquals(UnsatisfiedLinkError.class, t.getClass());
+        }
+    }
+
+    /**
+     * Tests the enableLegacyMode API that allows the embedder to force JavaCronetEngine
+     * instantiation even when the native Cronet engine implementation is available.
+     */
+    @SmallTest
+    public void testEnableLegacyMode() throws Exception {
+        ExperimentalCronetEngine.Builder builder =
+                new ExperimentalCronetEngine.Builder(getContext());
+        builder.enableLegacyMode(true);
+        CronetEngine engine = builder.build();
+        assertJavaEngine(engine);
+    }
+}