Update settings provider - insert in secure settings test

The settings provider fails fast if the input for the insert method
is not valid. The test is trying to insert a null key which is not
a valid key. Note that in this case no mutation is performed. To really
tests the provider protection we are inserting a valid key, value pair.

bug:21619456

Change-Id: Iadd9208deda1fa44eb2fc8a76347a19b417e0010
diff --git a/tests/tests/permission2/src/android/permission2/cts/NoWriteSecureSettingsPermissionTest.java b/tests/tests/permission2/src/android/permission2/cts/NoWriteSecureSettingsPermissionTest.java
index eb476c7..b46c45d 100644
--- a/tests/tests/permission2/src/android/permission2/cts/NoWriteSecureSettingsPermissionTest.java
+++ b/tests/tests/permission2/src/android/permission2/cts/NoWriteSecureSettingsPermissionTest.java
@@ -16,6 +16,9 @@
 
 package android.permission2.cts;
 
+import android.Manifest;
+import android.content.ContentValues;
+import android.provider.Settings;
 import android.test.AndroidTestCase;
 
 /**
@@ -30,7 +33,15 @@
      *   {@link android.Manifest.permission#WRITE_SECURE_SETTINGS}
      */
     public void testWriteSecureSettings() {
-        assertWritingContentUriRequiresPermission(android.provider.Settings.Secure.CONTENT_URI,
-                android.Manifest.permission.WRITE_SECURE_SETTINGS);
+        try {
+            ContentValues values = new ContentValues();
+            values.put(Settings.Secure.NAME, Settings.Secure.ACCESSIBILITY_ENABLED);
+            values.put(Settings.Secure.VALUE, Boolean.TRUE);
+            getContext().getContentResolver().insert(Settings.Secure.CONTENT_URI, values);
+            fail("expected SecurityException requiring "
+                    + Manifest.permission.WRITE_SECURE_SETTINGS);
+        } catch (SecurityException expected) {
+           /* do nothing */
+        }
     }
 }