fix unit tests, add shadow for WorkerManager

OpenKeychain/src/test/java/org/sufficientlysecure/keychain/TestHelpers.java

@@ -0,0 +1,43 @@
+package org.sufficientlysecure.keychain;
+
+
+import android.content.ContentValues;
+
+import org.hamcrest.BaseMatcher;
+import org.hamcrest.Description;
+import org.mockito.Matchers;
+
+
+public class TestHelpers {
+    public static ContentValues cvContains(ContentValues value) {
+        return Matchers.argThat(new BaseMatcher<ContentValues>() {
+            @Override
+            public boolean matches(Object item) {
+                if (item instanceof ContentValues) {
+                    ContentValues cv = (ContentValues) item;
+                    for (String key : value.keySet()) {
+                        if (!cv.containsKey(key)) {
+                            return false;
+                        }
+
+                        Object ours = value.get(key);
+                        Object theirs = cv.get(key);
+                        if (ours == null && theirs == null) {
+                            continue;
+                        }
+                        if (ours == null || !ours.equals(theirs)) {
+                            return false;
+                        }
+                    }
+                    return true;
+                }
+                return false;
+            }
+
+            @Override
+            public void describeTo(Description description) {
+                description.appendValue(value);
+            }
+        });
+    }
+}