diff -r 000000000000 -r 6474c204b198 mobile/android/tests/background/junit3/src/sync/TestWebURLFinder.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/tests/background/junit3/src/sync/TestWebURLFinder.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+package org.mozilla.gecko.background.sync;
+
+import java.util.Arrays;
+
+import org.mozilla.gecko.background.helpers.AndroidSyncTestCase;
+import org.mozilla.gecko.sync.setup.activities.WebURLFinder;
+
+/**
+ * These tests are on device because the WebKit APIs are stubs on desktop.
+ */
+public class TestWebURLFinder extends AndroidSyncTestCase {
+  public String find(String string) {
+    return new WebURLFinder(string).bestWebURL();
+  }
+
+  public String find(String[] strings) {
+    return new WebURLFinder(Arrays.asList(strings)).bestWebURL();
+  }
+
+  public void testNoEmail() {
+    assertNull(find("test@test.com"));
+  }
+
+  public void testSchemeFirst() {
+    assertEquals("http://scheme.com", find("test.com http://scheme.com"));
+  }
+
+  public void testFullURL() {
+    assertEquals("http://scheme.com:8080/inner#anchor&arg=1", find("test.com http://scheme.com:8080/inner#anchor&arg=1"));
+  }
+
+  public void testNoScheme() {
+    assertEquals("noscheme.com", find("noscheme.com"));
+  }
+
+  public void testNoBadScheme() {
+    assertNull(find("file:///test javascript:///test.js"));
+  }
+
+  public void testStrings() {
+    assertEquals("http://test.com", find(new String[] { "http://test.com", "noscheme.com" }));
+    assertEquals("http://test.com", find(new String[] { "noschemefirst.com", "http://test.com" }));
+    assertEquals("http://test.com/inner#test", find(new String[] { "noschemefirst.com", "http://test.com/inner#test", "http://second.org/fark" }));
+    assertEquals("http://test.com", find(new String[] { "javascript:///test.js", "http://test.com" }));
+  }
+}